Battles of La Naval de Manila The Battles of La Naval de Manila were a series of five naval battles fought in the waters of the Philippines in 1646 , between the forces of Spain and the Dutch Republic , during the Eighty Years ’ War . The Spanish forces , which included large contingents of native Filipino volunteers , consisted of only two , and later , three Manila galleons , a galley and four brigantines , against a Dutch fleet of eighteen warships , in three separate squadrons . Heavy damage was inflicted upon the Dutch squadrons by the Spanish - Filipino forces , forcing the Dutch to abandon their invasion of the Philippines . The victories against the Dutch invaders were attributed by the Spanish and Filipino troops to the intercession of the Virgin Mary under the title of Our Lady of the Most Holy Rosary of La Naval de Manila . On 9 April 1652 , the victories in the five sea battles were declared a miracle by the Cathedral Chapter of Manila after a thorough canonical investigation , giving rise to the centuries - old festivities of Our Lady of the Most Holy Rosary of La Naval de Manila . Background . Spanish - Dutch War . The invasion of the Philippines launched by the Dutch was a spill over of the Spanish - Dutch War in the European continent which for the Hollanders was part of their struggle for independence and religious freedom . The Netherlands became part of the Spanish territory in 1555 when Emperor Charles V ( Charles I of Spain ) divided the Habsburg Empire following his abdication . His son , Philip II inherited Spain and the Netherlands . The new ruler soon came into conflict with his Dutch provinces . Philip attempted to reinforce his rule upon Netherlands , which met with opposition from both the Dutch nobility and merchant classes . The conflict between the Dutch and the Spanish king heightened with the repression of the Protestant Reformation in Netherlands . A devout catholic , Philip II believed it was his duty as God ’ s “ anointed king ” to fight for the Catholic Church . Philip ’ s severe repression of the religious reforms , backed by the zeal of Jesuits and the Spanish Inquisition , eventually increased tensions until in 1566 , the Iconoclast Fury erupted . Radical Protestants instigated a religious riot and destroyed statues in Catholic churches and monasteries in Netherlands . The unrest spread throughout the country starting the Dutch revolt . From 1517 , the port of Lisbon in Portugal was the only European market of products ( particularly spices ) from India where other nations could purchase their needs . But as a result of Wars of Flanders between Spain and Netherlands , Portugal , depending on the former , closed its markets to Holland . Thus , in 1595 , the Dutch decided to try to acquire the products themselves , making use of the “ secret ” knowledge of the Portuguese trade routes , which Cornelis de Houtman managed to acquire in Lisbon . Early Spanish - Dutch conflicts in the Philippines . Pursuing their quest for alternative trade routes to Asia , the Dutch reached the Philippines and sought to dominate the commercial sea trade in Southeast Asia by engaging in piratical activities . They harassed the coasts of Manila bay and its environs , and preyed on sampans and junks from China and Japan , thereby disrupting Spanish trade . The first Dutch squadron to reach the Philippines was led by Olivier van Noort . On December 14 , 1600 , the van Noort ' s squadron grappled with the Spanish fleet under Antonio de Morga near Fortune Island , where de Morga ' s flagship , the San Diego , sank . Van Noort managed to return to Holland , thus becoming the first Dutch to circumnavigate the world . Another Dutch fleet of four ships under the command of Francois de Wittert tried to attack Manila in 1609 , but was repelled by the Spanish governor - general Juan de Silva who launched a counterattack and defeated the Dutch at the Battle of Playa Honda , where François Wittert was killed . On October 1616 , another Dutch fleet of 10 galleons under the command of Joris van Spilbergen ( Georges Spillberg ) blockaded the entrance of the Manila Bay . A Spanish armada of seven galleons led by Juan Ronquillo battled against Spilbergen ' s fleet at the Playa Honda on April 1617 ( known as the second battle of Playa Honda ) . Spilbergen ' s flagship , the " Sol de Holanda " ( Sun of Holland ) sank , and the Dutch were once again repulsed . From 1640 to 1641 , a Dutch fleet of three ships stationed near Embocadero de San Bernandino to capture galleons coming from Acapulco , Mexico . These galleons , however , escaped safely by taking a different route after receiving warnings from a system of fire - signals ( placed in Embocadero ) which was devised by the Jesuit priest Francisco Colin . Prelude . Planned invasion of the Philippines . In view of their previous failures , the Dutch took it out more against the Spanish , and to offset their huge losses , they decided to seize the Philippines , feeling certain that they were strong enough to carry out the attacks . From the time they conquered Formosa in 1642 and expelled the Spanish stationed in that island , the Dutch became increasingly eager to attack Manila because they knew the city lacked strong defenses and that it was unable to receive enough aid because the affairs in Spain were so disrupted by the Thirty Years ' War in Europe . Fr . Juan de los Angeles , a Dominican priest who had been taken from Formosa to Macassar as prisoner of the Dutch , later described in his account that the Dutch were so eager to launch an attack in the Philippines that " " they talk among themselves of nothing else than how they will gain Manila " " , and that " " they have urgently requested more men from Holland for the purpose of attacking Manila . " " . In his account , he also described the formidable force of the Dutch stationed at the ports of Jakarta in Indonesia and Formosa : Condition of the islands . The entire Philippines was already in dire situation at the time when the Dutch were planning their invasion . The new Spanish governor - general Diego Fajardo Chacón reached the Philippines at the end of June in 1644 , together with the Andalusian Captain Sebastian López . Fajardo found the islands deficient in naval strength . Making his entrance into Manila by mid - August , Fajardo took possession of the government and dispatched two galleons - - " Nuestra Señora dela Encarnación " and " Nuestra Señora del Rosario " ( hereinafter called " Encarnación " and " Rosario " , respectively ) — to acquire new resources for the islands from New Spain . Catastrophic events in 1645 . Death of the Archbishop . In July 1645 , the " Encarnación " and " Rosario " , under the command of the Viscayan Captain Lorenzo de Orella y Ugalde ( also Lorenzo Ugalde de Orellana ) arrived from Mexico at the port of Lamon Bay , with goods for the Philippines to replenish its depleted resources . Aboard in one of the two galleons was the archbishop - elect of Manila , His Grace Don Fernando Montero de Espinosa . On his way to Manila , de Espinosa was striken by hemorrhagic fever and died . The citizens of Manila , who were in great need of a religious leader to strengthen their faith in those desperate times , sorrowfully mourned at the untimely death of de Espinosa . The San Andres earthquake . On November 30 , 1645 , during the feast of Saint Andrew the Apostle , a devastating earthquake hit Manila and its environs , destroying about 150 magnificent buildings and killed countless citizens . Five days later , on December 5 , another earthquake as violent as the first rocked the city . Although no fatalities were recorded , the remaining unstable structures damaged by the first tremor were totally destroyed . The destructive powers of the earthquake reached other provinces of the islands . Natives ' villages were utterly overthrown , as their huts built of bamboos and palm - leaves were leveled . Great fissures , and even chasm s , appeared in the open fields . Rivers ( including those in Manila ) overflowed and flooded the cities and villages as the result of the subsequent quakes . Full - scale attack in 1646 . In their great council in New Batavia ( Jakarta ) , the Dutch decided to launch a decisive attack in the Philippines . The Dutch equipped 18 vessels under Maarten Gerritsz Vries , and divided them into three squadrons : Dutch Forces . First Squadron Second Squadron Third Squadron After monsoon , these three squadrons will then converge as one armada outside the bay of Manila to attack the city . Hispanic - Filipino Forces . News of the arrival of the first squadron in Ilocos and Pangasinan region reached Manila on February 1 , 1646 . The Dutch tried to win over the Ilocanos and Pangasinenses , promising complete independence and abolition of taxes . But when the natives resisted , the Dutch corsairs plundered their homes . The arrival of some companies of Spanish soldiers to those places , however , forced the Dutch to re - embark to their ships . Learning the presence of the enemy , Governor Fajardo called for a council of war . At that time , Manila had no naval strength to repel the enemy — save for the two old and nearly - rotting Manila - Acapulco galleons , the 800 - ton " Encarnación " and 700 - ton " Rosario " — which arrived at Cavite from Mexico from the previous year . Despite of being greatly outnumbered by the enemy , General Fajardo decided that the two galleons should be made ready for battle . The two galleons were hastily equipped and manned as follows : Fajardo appointed the General Lorenzo Ugalde de Orellana as commander - in chief of the Spanish fleet ( and thus making him captain of the flagship Encarnacion ) , with Sebastain Lopez as admiral ( and captain of the Rosario ) . The appointed sergeant - major was Agustin de Cepeda . The four companies of infantrymen were under the leadership of Captains Juan Enriquez de Miranda and Gaspar Cardoso on the flagship , and Captains Juan Martinez Capel and Gabriel Niño de Guzman on the almiranta . The chief pilots were Captain Domingo Machado with his associate Francisco Romero on the flagship , while on the almiranta were Captain Juan Martinez and his associate Andres Cordero . Spiritual preparations . For the spiritual aid of the entire fleet , Governor Fajardo accepted the proposal made by the Father Provincial Diego Gonzales of the Order of St . Dominic , giving the chaplaincies for the two galleons to the Dominicans . On the flagship were Fr . Juan de Cuenca , O . P . and Fr . Placido de Angulo , O . P . , while on the almiranta were Fr . Pedro de Mesa , O . P . and Fr . Raymundo del Valle , O . P . As the result of the excellent preaching and exhortations of the four priests , the soldiers agreed to make confession and receive the Holy communion . In addition , they took as their special patron the Virgin of the Holy Rosary ( as advised by the priests ) , and finally , they made a vow to hold a feast day of thanksgiving , should they emerge victorious in the battles . On the other hand , Fajardo ordered that the Blessed Sacrament be continuously exposed in the royal military chapel and in all churches and chapels in Manila during the entire period of the campaign . It was also instructed that all the soldiers should recite the prayers of the Rosary aloud everyday — on their knees and in two choirs — before an image of Our Lady . According to the chronicles , one soldier aboard the Rosario built an altar below deck and placed on it an image of Our Lady of the Rosary . On March 3 , 1646 the small fleet sailed from the port of Cavite to Mariveles . Before the departure , Governor Fajardo bid the soldiers farewell , expressing his regret that he could not join the campaign because of his age and responsibility in Manila , but he promised them the prayers of the populace and reward for their success . Battles of 1646 . First Battle . Arriving at the entrance of Mariveles , the Dutch squadron were nowhere to be found ( contrary to the earlier reports of the sentinels stationed in Mariveles ) . The Spanish fleet then proceeded to Bolinao in Lingayen , Pangasinan . There , on March 15 at around 9 : 00 AM , the Spanish fleet discovered one enemy vessel on oars , but it quickly took flight . At about 1 : 00 PM , four Dutch ships appeared , together with the smaller oared - vessel they had seen earlier . The two fleets came within firing range of each other between two and three o ' clock in the afternoon . The first salvo came from the Dutch flagship but missed its mark . The " Encarnación " answered with two shots , hitting the Dutch almiranta with a 15 kg cannon ball , tearing open the forward edge of the ship ' s prow . The Dutch then concentrated firing on the smaller ship " Rosario " , but it retaliated by firing a simultaneous volley of cannons . On the other hand , the " Encarnación " fired freely at any of the four enemy vessels , inflicting severe damages and thus forcing the Dutch to disengage in battle . The battles lasted for five hours . At around 7 : 00 PM , four of the enemy ships retreated in the dark with their lanterns out . The Dutch almiranta almost sunk but also escaped under the cover of darkness . The Spanish - Filipino fleet looked for the Dutch corsairs up to Cape Bojeador on the northern tip of Luzon , but the Dutch fleet completely disappeared . The Spanish fleet sustained only minor damages . None of the men were killed and only few were wounded . The two ships stayed at the port of Bolinao to undergo some repairs . From there , General Orellana , after sending word to Governor Fajardo of their initial victory , received orders from the governor to escort and secure the safety of the merchant galleon from Mexico — the " San Luis " — which was calculated to reached the Philippines via Embocadero de San Bernardino on July 21 . The merchant galleon , laden with goods from Mexico , could be a principal target of the Dutch corsairs . Naval siege at Ticao Island In mid - April , the second Dutch squadron had entered the Philippine waters . The Dutch first headed for Jolo , intending to attack the Spanish garrison in that place , but upon seeing that it was already abandoned ( as ordered by Governor Fajardo to consolidate the Spanish force against the Dutch ) , the Dutch fleet then proceeded to another Spanish stronghold in Zamboanga , snatching two of the five ships that would carry the relief to Ternate in Moluccas . The other three managed to escape . The Dutch then attacked the stronghold of Zamboanga , but given its strong resistance , the corsairs landed their troops in Caldera to directly assault the fort , but they were driven back to their ships by Captain Pedro Duran de Monforte with 30 Spanish and two indigenous companies , causing more than a hundred casualties on the part of the Dutch . News of the Dutch presence in Zamboanga reached the Spanish fleet , which had already docked at the Port of San Jacinto in Ticao Island ( a long and narrow strip of land , lying between San Bernardino Strait and Ticao Passage , northeast of Masbate Island ) on June 1 . The port where the two galleons anchored lies open to sea , in the form of a semicircle , and is entered by a passage through which vessels can pass only one after another . The Dutch squadron , still stationed in Zamboanga awaiting the return of the other three ships which managed to escape their clutches , proceeded to San Bernandino , prompted by their previous orders from Batavia to seize any vessel coming from Mexico to the Philippines . On June 22 , the seven Dutch warships and 16 launches were sighted by the sentinel approaching the island of Ticao . The following day , June 23 , the Dutch discovered the " Encarnación " and " Rosario " moored at the entrance of San Jacinto port . The Dutch decided to form a naval siege , blockading the entrance of the harbor with their own ships to prevent the two galleons from coming out . It was decided after a council of war that the two ships should not engage in battle to save their ammunitions until the arrival of the " San Luis " to protect it at all cost . General Orellana then ordered Sargeant - major Agustin de Cepeda with Captain Gaspar Cardoso as his aide , together with 150 infantrymen , to secure an elevated piece of land located near the entrance of the harbor , which might be used by the Dutch as a strategic point to ambush the two galleons . At 10 o ' clock of June 23 , four heavy armed boats of the Dutch approached the hill , but were driven back by the Spanish and Filipino troops in a surprise attack . Failing to secure the hill , the Dutch sent 10 launches to inflict some damage upon the two galleons , hoping to reduce the ammunitions of the Spanish fleet before the arrival of the " San Luis " . This strategy ( which intermittently occurred throughout the span of the siege ) also failed . The standoff between the Spanish and Dutch fleets continued for a span of 31 days as both navies waited for the arrival of " San Luís " . By July 24 , however , there was still no sign of the galleon . Antonio Camb , the commander of the second Dutch squadron , presumed that it had already made port somewhere in the archipelago . The Dutch decided to lift their siege and finally took the route to Manila . Second battle . At dawn of July 25 , ( the feast of St . James the Apostle , Patron of Spain ) the Spanish fleet of two left the port of Ticao . When the sun finally rose they saw the Dutch squadron sailing away , bound to Manila . The " Encarnación " and " Rosario " wasted no time and chased the enemy , knowing that Manila laid defenseless , with no ships to protect itself and all its artillery totally removed for use of the two galleons . On one occasion , as reported by one of the soldiers aboard the " Encarnación " , Fr . Juan de Cuenca , O . P . seemed in a trance and then delivered " a very spiritual sermon " to the men , the content of which was " an assurance on the part of God and His Most Holy Mother , not only victory but also that no one would be killed in battle . " The two Spanish galleons caught up the seven Dutch warships between the islands of Banton and Marinduque on July 28 , 1646 , although no immediate hostilities ensued . Before the battle began , both General Orellana and Admiral Lopez ( without each other ' s knowledge ) , made public their vows to the Virgin of the Rosary in the name of the entire armada , that if they come out victorious against the Dutch , " they will make a solemn feast in Her honor , and all of them would walk barefoot to Our Lady ' s chapel at Santo Domingo church " , as a sign of thanksgiving . The second battle ( which was according to the chronicles was the bloodiest ) took place on July 29 at around 7 : 00 PM . The seven Dutch ships surrounded the " Encarnación " . The lone Spanish flagship exchanged fires violently against the Dutch , inflicting greater damage on the part of the corsairs . The " Rosario " was outside the circle of the Dutch and fired freely from behind causing greater destruction to the enemy . At one point the " Encarnacion " got entangled with the Dutch almiranta , with the danger that the Dutch would board the flagship and force the outnumbered Spanish and Filipino troops in hand - to - hand combat . The mariners of the Spanish flagship immediately rushed to cut the tangled ropes , freeing both ships . The Dutch tried to blow up the " Encarnacion " by sending one of their fire ships , but it was repulsed by a continuous volley of artillery from the Spanish flagship . It turned to the " Rosario " , but it too was met with ten simultaneous shots which ignited its fireworks . The fire ship burst into flames and sank , killing its crew . The battle lasted till daybreak , and the Dutch fled . One man survived the sinking of the Dutch fire ship and was taken prisoner by the Spanish - Filipino armada . As promised by Fr . de Cuenca , no man was killed in the " Encarnación " . The " Rosario " lost five men . Third Battle . The following day , the Spanish - Filipino fleet pursued the enemy , which now had only six vessels including the remaining fire ship . The Dutch were cornered by the two ships on July 31 , 1646 at around 2 : 00 PM , between the islands of Mindoro and Maestre de Campo ( an island about 20 kilometers southeast of Mindoro ) , where the third battle took place . The Spanish - Filipino fleet took the offensive side as the Dutch were desperately defensive . The bombardment between the two navies , as one narrator described it , " became furious like the explosion of so many volcanoes . " The Dutch then tried to disable the " Rosario " , but they were met by a heavy volley of cannon shots . In desperation , the Dutch finally sent out their remaining fire ship . It was armed with 30 cannons but with no sail that it had to be escorted by two other vessels and towed by some of the Dutch launches . General Orellana ordered the musketeers to fire on the men who were directing the launches . At the same time , he ordered the artillery on the starboard side of his ship ( to which the fire ship was coming ) to continuously fire at the sides of the approaching vessel . The fire ship got badly battered and sank , bringing its crew and fireworks to the bottom of the sea . As the fire ship sank , the men on the Spanish flagship shouted " " Ave Maria ! " " ( Hail Mary ! ) and " " Viva la fe Cristo y la Virgen Santisima del Rosario ! " " ( Long live the Faith in Christ and the Most Holy Virgin of the Rosary ! ) and continued shouting these words until the fire ship completely disappeared into the sea . The battle continued till about the time of the Angelus at 6 : 00 PM . The Dutch once again fled into the night , with its flagship severely damaged . The sense of relief was overwhelming for the Spanish - Filipino armada , that they publicly declared that it was the victory of Our Lady of the Rosary , and General Orellana " fell on his knees before an image of Our Lady and publicly gave thanks for the victory , acknowledging it as by Her hand . " Informed of the third victory , Governor Fajardo ordered the Spanish fleet of two to return to the port of Cavite for the much needed rest and repairs . After a six - month voyage , the victorious fleet reached Cavite in the latter part of August . As soon as they landed , the triumphant Spanish - Filipino troops led by General Orellana marched barefooted to the church of Santo Domingo in Manila , as fulfillment to their vow . They were acclaimed as heroes upon their arrival in the city . General Orellana retired from service and was awarded by the governor - general with one of the best encomienda s in the land , while the other officers were promoted in rank . Fourth Battle . With their successive victories against the Dutch corsairs , the Spanish authorities in Manila presumed that the enemy had already abandoned their plan of invasion , that they confidently allowed the " San Diego " , a newly built merchant galleon bound for Mexico , to sail as far as San Bernardino Strait without having any ships to escort it . Unknown to the Spaniards , the first three of the six warships that consisted the third Dutch squadron had already entered the Philippine waters by the month of September of the same year , to join the rest of the earlier two Dutch squadrons , which were — unknown to the commanders of these three ships — had already been defeated by the Spanish - Filipino fleet . General Cristoval Marquez de Valenzuela , commander of the " San Diego " , was taken surprise to discover the three Dutch ships stationed near Fortune Island in Nasugbu , Batangas . Seeing that the " San Diego " was not a warship , the Dutch corsairs attacked it furiously . The " San Diego " barely escaped the Dutch as it retreated towards Mariveles . Upon entering Manila Bay , the galleon proceeded to the port of Cavite to inform the Governor General regarding the presence of the Dutch . Governor Fajardo immediately ordered his sergeant major and infantry commander Manuel Estacio de Venegas to form a new Spanish armada , now composed of three galleons ( the " Encarnación " , " Rosario " and " San Diego " , which was converted to a battleship ) , a galley ( " Galera " in Spanish ) and four brigantine s . The " Encarnación " and " Rosario " maintained its designations as flagship and admiral ship , respectively . Reorganization in the military With General Orellana ' s retirement , Sebastian Lopez ( former Admiral and captain of the " Rosario " ) was promoted as commander - in - chief of the entire armada ( making him the new captain of the " Encarnación " ) . The former sergeant - major Agustin de Cepeda was elevated to the rank of Admiral , and thus becoming Sebastian Lopez ' s successor as captain of " Rosario " . The chaplaincy in the " Encarnación " was retained by the Dominicans ; the Franciscans were assigned on the " Rosario " while an Augustinian friar on the galley . Governor Fajardo ordered that the vow made during the three previous battles be renewed , as well as the continuity of the practice of reciting the Holy Rosary aloud in two choirs while keeling before the image of Our Lady . On September 16 , 1646 , with Spanish armada sailed towards Fortune Island where Dutch presence had been reported , but the enemy were not there anymore . Sailing a little further towards Mindoro , the Spaniards sighted the Dutch corsairs near , between Ambil and Lubang Islands . The fourth battle began at around 4 : 00 PM . The wind was against the Spanish armada that it had difficulty in approaching the enemy . The two navies were so far from each other that the bombardment was conducted with long range for five hours . At around 9 o ' clock , the " Rosario " was drifted by the current to the enemy and found itself surrounded by the three Dutch ships . The " Encarnación " had difficulty in approaching the " Rosario " , and for four hours , the lone admiral ship battled furiously against the three , forcing the Dutch corsairs to retreat and took shelter among the shoals near Cape Calavite . Fifth Battle . The final battle took place on October 4 , 1646 , the feast of St . Francis of Assisi . Upon learning that the newly built " San Diego " had some defects , making it unable to continue its journey to Mexico , General Sebastian decided to bring the galleon back to Mariveles and await for Governor Fajardo ' s decision regarding the matter . The " San Diego " was moored at Mariveles ( together with the galley and the four brigantines ) , with the " Encarnación " guarding it from a distance , anchoring at the entrance of Manila Bay . The " Rosario " on the other hand , was carried far away by adverse currents ( some two or three leagues from the two ships ) and had difficulty in approaching the flagship ( for in those places the force of the currents is irresistible ) . Seeing that the three galleons were far from each other , the three Dutch ships ventured to attack once more . The Dutch ships , according to the chronicles , were of great size and well - armed . The enemy flagship had 40 cannons on its sides , not including those in rear and on the quarterdeck . The admiral ' s ship had less . The third vessel seemed to be a fireship due to its swiftness and the fireworks it carried . General Lopez decided not to move from his current position , as the " Encarnación " might also be carried away by the current like the " Rosario " , leaving the " San Diego " unguarded from the approaching Dutch corsairs . Instead , he waited for the Dutch to come nearer without raising the anchor , but loosened the cable with a buoy . The Dutch came very close to the " Encarnación " with the danger that the corsairs would board the lone flagship . Lopez then ordered the anchor to be raised , the ship ' s sails unfurled , and with the buoyed cables controlling the movement of the flagship , the " Encarnación " fired violently against the three Dutch ships , as all the four grappling vessels were carried by the current away from the " San Diego " . The furious bombardment lasted for four hours . The " Encarnación " inflicted grave damages upon the enemy , forcing the Dutch corsairs once again to flee . As the Dutch fled , the wind suddenly stopped , giving chance to the galley under the command of Admiral de Esteyvar to attack the Dutch flagship ( which was temporarily immobilized with the absence of the wind ) . Although outgunned , the " galera " fired upon the Dutch vessel " so furiously that the enemy regarded themselves as lost and the men attempted to throw themselves overboard . " The Dutch flagship was already in danger of sinking when the wind returned which helped the enemy in their escape . The " Encarnación " and the " galera " followed in hot pursuit , but the Dutch managed to flee by nightfall . There was no casualty in the Spanish galley , however , four were killed in the " Encarnación " . Aftermath . The victorious armada returned once again to Manila to fulfill their vow of walking barefooted to the shrine of Our Lady of the Rosary in Santo Domingo church in Intramuros . On January 20 , 1647 , the victory was celebrated in a solemn feast by means of a procession , divine worship and a parade of the Spanish squadron with other demonstrations in fulfillment of the vow made to the Virgin of the Rosary . After which , the city of Manila , after convening a council , made a new vow to celebrate the solemnity of the naval victories every year . Ecclesiastical investigations . On April 6 , 1647 , the Father Friar Diego Rodriguez , O . P . , Procurator - General of the Dominican fathers , on behalf of the religious Order , duly requested the vicar of the Diocese of Manila to declare that the victories achieved in the year 1646 had been miraculous intercession of the Virgin of the Rosary . The City Council took into account the three following circumstances to declare the victories as miraculous : Declaration as miracle . On April 9 , 1652 , the battles of 1646 were declared miraculous by the Venerable Dean and Chapter and Ecclesiastical Governor in the vacant See of the Metropolitan Church of Manila . References . Websites