Sahibzada Ajit Singh Sahibzada Ajit Singh Ji ( 1687 – 1705 ) was the eldest of Guru Gobind Singh ' s four sons . His younger brothers were Sahibzada Jujhar Singh , Sahibzada Zorawar Singh and Sahibzada Fateh Singh . With his three brothers , Sahibzada Ajit Singh Ji carried on a family tradition : that of attaining the status of one of the most hallowed martyrs in Sikh history . Before him and his brothers , their grandfather , the Ninth Sikh Guru Ji , Guru Tegh Bahadur and his great - great grandfather , the Fifth Sikh Guru Ji , Guru Arjan Dev had also been executed by the Mughals . Early life . Sahibzada Ajit Singh Ji was born to Mata Sundari and Guru Gobind Singh Ji at Paonta Sahib on 26 January 1687 . The following year , Guru Gobind Singh Ji returned with the family to Anandpur where Sahibzada Ajit Singh Ji was brought up in the approved Sikh style . He was taught religious texts , philosophy and history , and had training in the manly arts such as riding , swordsmanship and archery . He grew up into a handsome young man ; strong , intelligent and a natural leader of men . Battles . The Ranghars of Nuh . Soon after the creation of the Khalsa on 13 April 1699 , he had his first test of skill . A Sikh Congregation ( ' Sangat ' ) coming from the Pothohar region of northwest Punjab , was attacked and looted on the way by the Ranghars ( a Muslim tribe ) of Nuh , a short distance from Anandpur across the River Satluj . Guru Gobind Singh Ji sent Sahibzada Ajit Singh Ji , then barely 12 years old , to that village . Sahibzada Ajit Singh Ji along with a 100 men reached the spot on 23 May 1699 , punished the Ranghars and recovered the looted property . Taragarh and Nirmohgarh . A harder task was entrusted to Sahibzada Ajit the following year when the hill chiefs supported by imperial Mughal troops from Lahore and Sirhind attacked Anandpur . Sahibzada Ajit Singh was made responsible for the defence of the Taragarh Fort , which became the first target of attack on 29 August 1700 . Ajit Singh , assisted by Bhai Udai Singh , a seasoned soldier , repulsed the attack . He also fought valiantly in the battle of Nirmohgarh in October 1700 . On 15 March 1701 , a Sikh Sangat coming from the Darap area ( near Sialkot ) was waylaid by Gujjars and Ranghars . Sahibzada Ajit Singh led a successful expedition against them . Restoring a Brahmin ' s wife . In March 1703 , Dewki Das , a Brahmin came to Anandpur and requested the Guru to help him in getting back his wife whom Chowdhry Jabar Khan , the chief of Dera Bassi , had taken away forcibly ; the Guru asked Sahibzada Ajit Singh and Bhai Udey Singh to help the Brahmin . On the 7th of March 1703 , both of them , joined by about one hundred Sikhs , went to Bassi Kalan ; they put siege to the village and sent a message to Jabar Khan to return the Brahmin ' s wife ; but Jabar Khan , instead of returning the Brahmin ’ s wife , asked his soldiers to attack the Sikhs ; it was followed by a full - fledged battle , in which Jabar Khan was killed ; the Brahmin ' s wife was restored to him . When this news reached the people , they praised the Sikhs for their role . The birth of Sahibzada Jujhar Singh . In 1691 , Mata Sundari gave birth to another boy who was named Jujhar Singh . Sahibzada Jujhar Singh was four years younger than Ajit Singh . Sahibzada Ajit Singh became a model for him . Jujhar Singh also was entrusted with several engagements around Anandpur and on hills . Both Ajit Singh and Jujhar Singh led hundreds of successful expeditions , helping the needy who would come to Guru Gobind Singh asking to get them justice . Chamkaur , Sahibzada Ajit Singh ' s Final Battle . When Mughal forces besieged Anandpur in 1705 , Sahibzada Ajit Singh again displayed his qualities of courage and steadfastness . After a long stalemate , the Mughal Faujdar gave his assurances that he only wanted the fort of Anandpur and would let the population of the town go unharmed . Anandpur was vacated on the night of 5th and 6 December 1705 . Sahibzada Ajit Singh was given the command of the rearguard . As the besiegers , violating their solemn promises , attacked the column , he stoutly engaged them on a hill - feature called " Shahi Tibbi " until he was relieved by Bhai Udai Singh . Ajit Singh crossed the Sarsa rivulet , then in spate , along with his father , younger brother , Jujhar Singh , and some others . Further reduced in numbers by casualties at the hands of pursuing troops from Ropar , the column reached Kotla Nihanga and then proceeded to Chamkaur on the night between 6th and 7 December 1705 . There they rested for some hours in the fortress of Budhi Chand Rawat . But , in the afternoon the Muslim soldiers from Malerkotla and Sirhind reached there , surrounded the fortress , and threw a tight ring around it . The Sikhs too took up position . An unequal but grim battle began . The Sikhs had exhausted the meagre stock of ammunitions and arrows , hence they made sallies in batches of five each to engage the encircling host with sword and spear . Sahibzada Ajit Singh led one of the sallies and laid down his life fighting in the thick of the battle . Gurdwara Katalgarh now marks the spot where he fell , followed by Sahibzada Jhujhar Singh who led the next sally . An annual fair is held in the commemoration of their martyrdoms in December - January . Commemoration . Ajitgarh , one of the largest cities in Punjab lying adjacent to its capital Chandigarh , has been named in the memory of Sahibzada Ajit Singh , Ajitgarh ( ' Home of Ajit ' ) . It is located in the district of the state which is also named after him Sahibzada Ajit Singh Nagar District .