Title: Telerig
Content:  Telerig (Телериг) was the ruler of Bulgaria from 768 to 777. Although Telerig is first mentioned by Byzantine sources in 774, he is considered as he immediate successor of Pagan, who was murdered in 768. In May 774, Byzantine Emperor Constantine V embarked on a major expedition against Bulgaria, led his field army on land and dispatched a fleet of 2000 ships carrying horsemen towards the Danube Delta. The fleet disembarked in the vicinity of Varna, but Constantine did not press his potential advantage and inexplicably retreated. Shortly afterwards, both sides signed a truce promising the cessation of hostilities. However, in October 774, Telerig sent an army of 12,000 men to raid Berzitia, Macedonia, and transfer its population to Bulgaria. Collecting a large army of 80,00 troops, Constantine surprised the Bulgarians and won a resounding victory. The subsequent attack on Bulgaria failed since the imperial fleet had 
Title: Telerig (village)
Content:  Telerig (Телерик ) is a village in the municipality of Krushari, in Dobrich Province, in northeastern Bulgaria.
Title: Telerig
Content:  contrary winds in the Black Sea. Telerig then sent a secret emissary to Constantine that indicated his intention to flee Bulgaria and to seek refuge with the emperor and sought assurances of hospitality and a list of Byzantines who might help him. Telerig succeeded in having the Constantine betray his own agents in Bulgaria, who were duly rounded up and executed. The expected Byzantine retaliation failed to materialise, as Constantine died in 775. In spite of his apparent success, Telerig found it necessary to flee to the new Byzantine emperor, Leo IV the Khazar, in 777. The Byzantine government gave Telerig asylum and the title of patrikios. Telerig converted to Christianity under the name of Theophylaktos and married a cousin of Empress Eirene. The 17th-century Volga Bulgar compilation Ja'far Tarikh (a work of disputed authenticity) represents Dilyarek (Telerig) as the son of the former ruler Teles (Telets).
Title: Telerig
Content: Mosko Moskov, Imennik na bălgarskite hanove (novo tălkuvane), Sofia 1988. ; Jordan Andreev, Ivan Lazarov, Plamen Pavlov, Koj koj e v srednovekovna Bălgarija, Sofia 1999. ; (primary source), Bahshi Iman, Djagfar Tarihi, vol. III, Orenburg 1997. 
Title: History of Bulgaria
Content:  proved to be unsuccessful. Thrilled with his success against Telerig, the Byzantine Emperor dispatched a fleet 2,000 ships loaded with horsemen. This expedition proved to be a failure, because of strong northern winds near Mesembria. Telerig was aware of the increased presence of spies in the capital Pliska. To decrease this Byzantine influence, he sent a letter to the emperor in which he asks for refuge in Constantinople and wants to know which Byzantine spies can help him. Knowing their names, he slaughters every agent in the capital. His rule marked the end of the political crisis. Under the warrior Khan Krum (802–814) Bulgaria expanded north-west and south, occupying the lands between the middle Danube and 
Title: Peter II of Bulgaria
Content:  The year of Theodor-Peter's birth is unknown. He was apparently the eldest son of a wealthy shepherd from the Haemus Mountains, according to Madgearu. On the other hand, no source records that he or his brother, Asen, owned cattle. Madgearu says, they may have administered an imperial horse farm, adding that their estates were most probably located near Tarnovo. Historian Ivan Dujčev writes that the brothers were local chieftains in the Balkan Mountains. Theodor-Peter and his brothers were mentioned as Vlachs (predecessors of modern Romanians)in sources written in the late 12th and early 13th centuries, but their ethnicity is subject to scholarly 
Title: Terter dynasty
Content:  The earliest representatives of the dynasty in Bulgaria were the despotēs Aldimir (Eltimir) and his older brother George Terter who was crowned emperor of Bulgaria as George I of Bulgaria (1280-1292), marrying the Bulgarian Maria. After his reign, Bulgaria was under the de facto control of the Golden Horde, with Nogai Khan nominating the next ruler, Smilets (1292-1298), who was of another noble family, and was briefly succeeded by his son Ivan II (1298-1299). In 1299–1300, Bulgaria was controlled by the Mongol Chaka. Chaka was deposed by George Terter's son, Theodore Svetoslav of Bulgaria (1300-1321), beginning the second reign of the Terterids, which also spanned that of his son, George II of Bulgaria. The Terter dynasty was succeeded by the Shishman noble dynasty of Vidin, also of partial Cuman origin.
Title: Tervel of Bulgaria
Content: Mosko Moskov, Imennik na bălgarskite hanove (novo tălkuvane), Sofia 1988. ; Jordan Andreev, Ivan Lazarov, Plamen Pavlov, Koj koj e v srednovekovna Bălgarija, Sofia 1999. ; (primary source), Bahši Iman, Džagfar Tarihy, vol. III, Orenburg 1997. ; (primary source), Nikephoros Patriarch of Constantinople, Short History, C. Mango, ed., Dumbarton Oaks Texts 10, 1990. ; (primary source), The Chronicle of Theophanes Confessor, C. Mango and R. Scott, trans., Oxford University Press, 1997. 
Title: Battle of Litosoria
Content:  eager to follow up his success and led another campaign against the Bulgars, but once again it failed. However, Telerig learned during this event that all his plans were known to Constantine through a network of spies within his government. He decided to eliminate them once and for all and sent a message to Constantine, stating that he was going to flee in exile to Constantinople. In exchange, Telerig asked the emperor to reveal the spies to his associates in Pliska for their own safety. As Telerig was not the first ruler to flee to Constantinople, Constantine revealed his information and sent the Bulgarian government the list of spies; however, Telerig deceived him and did not travel to Constantinople. When Telerig learned of their names, he executed them all and eliminated the Byzantine spy network within his government.
Title: Tervel of Bulgaria
Content:  the disorders in Byzantium and raided Thrace in 712, plundering as far as the vicinity of Constantinople. Given the chronological information of the Imennik, Tervel would have died in 715. However, the Byzantine Chronicler Theophanes the Confessor ascribes Tervel a role in an attempt to restore the deposed Emperor Anastasius II in 718 or 719. If Tervel had survived this long, he would have been the Bulgarian ruler who concluded a new treaty (confirming the annual tribute paid by the Byzantines to Bulgaria, the territorial concessions in Thrace, regulating commercial relations and the treating of political refugees) with Emperor Theodosius III in 716. However, elsewhere Theophanes records the name of the Bulgarian ruler who concluded the treaty 

Question: Who is the father of Telerig of Bulgaria?
Answer: Telets of Bulgaria.