The origin of founders of Vijayanagara Empire is yet disputed. Some say they were of Telugu origin while others claim of their Karnataka origin.
According to the official version of Andhra Pradesh, Harihara and Bukka, the two brothers were first in the service of Kakatiya King, Prataprudradeva. After Warangal fell in 1323, they moved away to safer places but were eventually captured by the Tughlaqs and were taken to Delhi as prisoners and were forced to become Muslims. They later gained favour of the Tughlaqs and received ministerial appointments. When the brothers found the political conditions conducive, they declared themselves free and founded the Hindu kingdom of Vijayanagara. They got reconverted to Hinduism. Andhra Pradesh can therefore rightfully stake a claim to a good part of the glory of the great Vijayanagara Empire ( 1336-1664 ) which with its first capital at Hampi, extended from the present day Karnataka to Orissa including Andhra Pradesh.
The founding of the original kingdom was based on the principality of Anegondi, based on a fortified town on the Tungabhadra river in the Deccan. In the century preceding the founding of the empire, the old kingdoms of the Deccan had been overrun by Muslim invaders from the north. From 1309, Malik Kafur reached and captured Warangal, later on reaching the Malabar kingdoms. Mubarak of Delhi reached Warangal again in 1323. Between 1334 and 1336, Muhammad Tughlaq of Delhi again overran the region, capturing Anegondi. There are several theories regarding the origin of this empire. Scholars like Prof. K. A. Nilakanta Sastry, Dr. N. Venkataramanayya and B. Surya Narayana Rao have supported the Telugu or Warrangal origin theory (Ref. Arthikage, Mangalore, India - History of Karnataka) Hakka and Bukka were brothers of the Kuruba clan and were commanders in the army of the King of Warangal. Muhammad bin Tughlaq after defeating the king of Warangal took Hakka and Bukka as prisoners of war to Delhi, where they were converted to Islam by force. However, the brothers escaped from Delhi vowed to preserve the Hindu culture and heritage. Under the guidance of Brahmin sage Madhvacharya Vidyaranya founded the Vijayanagara Kingdom. The Emblem of the Kingdom was Varaha (pig) the incarnation of Lord Vishnu. The Kuruba descendents of the Kingdom still live in Hampi. But scholars like Fr. Heras, B. A. Saletore and Dr. P. B. Desai have ably rejected this theory. They hold the view that the Sangama brothers were closely connected with the Hoysalas. Dr. Desai is of the opinion that the founders of Vijayanagara never belonged to the Telugu region and the story of their captivity and conversion by the Sultan of Delhi is false. The testimony of epigraphs establishes the fact that the ancestral territory of the Sangama brothers was Karnataka and that the area round about Hampi constituted their homeland. That Harihara and his brothers hailed from the Kannada region and were legitimate successors to Hoysala sovereignty by natural process is supported by evidence. For example, they became over lords of the entire communions formerly ruled by the Hoysalas without any clash for the transfer of power. In keeping with the old tradition, they implicitly followed the Hoysala framework in all political and administrative matters. Lord Virupaksha of Hampi and Chennakeshava of Belur were worshipped. As pointed out by G. S. Gai almost half of the inscriptions of Vijayanagara are in Kannada. Many of their titles like “Bhashegetappuva - rayara - ganda” and “Rayamoovara - ganda” were in Kannada and were used in the same form even in Sanskrit. According to Dr. P. B. Desai, “the adoption of the pontiffs of Shringeri as their revered teachers and spiritual guides and the pasupata Kriyasaktis as their family priests by the Sangama is yet another testimony of their unquestionable identity with the Hoysala country and Karnataka” (Ref. Arthikage, Mangalore, India - History of Karnataka) According to another account,Muhammad bin Tughlaq made Harihara, son of Sangama, who was previously a notable or a minister of Anegondi, his governor there. Harihara, who may also be called Deva Raya, was the first emperor of the Vijayanagara empire. Another story avers that the hermit Vidyarnya himself founded the city after the discovery of a hidden treasure, ruled over it himself, and left it after his death to a Kuruba family who established the first regular dynasty. A fourth account states that while Vidyaranya was living his ascetic life amongst the mountains he was supported by meals brought to him by a shepherd of Kuruba caste called Bukka, "and one day the Brahmin said to him, 'You shall be king and emperor of all Bharata.' The other shepherds learned this, and began to treat this shepherd with veneration and made him their head; and he acquired the name of 'king,' and began to conquer his neighbours. Bukka established a city "and called it Vijaya Nagar – the city of victory . As Muhammud Tughlaq's rule ended amidst revolts against him by his Muslim subjects in the Deccan, the area ruled by Harihara expanded greatly and quickly. The city of Vijayanagara was established by about 1340 on the bank of the Tungabhadra opposite Anegondi. Harihara was succeeded, probably around 1343, by his brother, Bukka Raya, who ruled till about 1379. By the end of Bukka's reign, most of southern India to the south of the Tungabhadra had accepted his suzerainity.
__The empire at its peak__
In the following two centuries, the Vijayanagar empire dominated all of southern India, and was probably stronger than any other power in the Indian subcontinent. The empire during that period served as a bulwark against invasion from the Turkic Sultanates of the Indo-Gangetic Plain; and remained in constant competition and conflict with the five Deccan Sultanates that established themselves in the Deccan to the north of it. It remained a land power. In about 1510, Goa, which had been under the rule of the Sultan of Bijapur, was captured by the Portuguese, possibly with the approval or connivance of Vijayanagara. Commerce between the Portuguese and Vijayanagara became very important to both sides. The empire is generally considered to have reached its peak during the rule of Krishna Deva Raya. Krishna conquered or subjugated territories on the east of the Deccan that belonged previously to Orissa. Many of the great monuments of the empire date from his time. Among these are the Hazara Rama temple, the Krishna temple and the Ugra Narasimha idol, all at Vijayanagara. He was followed by Achyuta Raya in 1530. In 1542, Achyuta was succeeded by Sada Siva Raya. But the real power lay with Rama (of the third dynasty), who seems to have made a point of unnecessarily provoking the Deccan sultanates, so that eventually they allied against him. In 1565, at the Battle of Talikota, the army of Vijayanagara was routed by an alliance of the Deccan sultanates. Rama Raya was killed in the Battle of Tallikot and his head (the real head) annually covered with oil and red pigment has been exhibited to the pious Mahomedans of Ahmudnuggur till 1829. With this, the last significant Hindu kingdom in the Deccan came to an end. Tirumala Raya the sole survivor left Vijayanagar with treasure on back of 550 elephants to Penukonda.
Vijayanagara is considered by many today, especially in the state of Andhra Pradesh, to have been a golden age of culture and learning.
__The decline__
While the empire still continued to have some power, and commanded respect, it went into a considerable decline. The rulers of this period are difficult to place clearly. It is known however that they continued to trade with the Portuguese, and that they gave the British the land grant that enabled the establishment of Madras.
__Dynasties and rulers__
This list is based on the book by Robert Sewell (A Forgotten Empire).
__Sangama Dynasty__
Harihara I (Deva Raya) 1336-1343
Bukka I 1343-1379
Harihara II 1379-1399
Bukka II 1399-1406
Deva Raya I 1406-1412
Vira Vijaya 1412-1419
Deva Raya II 1419-1444
(unknown) 1444-1449
Mallikarjuna 1452-1465 (Dates uncertain)
Rajasekhara 1468-1469 (Dates uncertain)
Virupaksha I 1470-1471 (Dates uncertain)
Praudha Deva Raya 1476-? (Dates uncertain)
Rajasekhara 1479-1480 (Dates uncertain)
Virupaksha II 1483-1484 (Dates uncertain)
Rajasekhara 1486-1487 (Dates uncertain)
Saluva Dynasty
Narasimha 1490-?
Narasa (Vira Narasimha) ?-1509
Krishna Deva 1509-1530
Achyuta 1530-1542
Sadasiva (in name only) 1542-1567
Tuluva dynasty
Rama (ruled in practice) 1542-1565
Tirumala (ruled in practice) 1565-1567
Tirumala (crowned ruler) 1567-1575
Ranga II 1575-1586
Venkata I 1586-1614