The main Hindu denominations were Saivite, Vaishnavite and Lingayat. Among the Brahmins, the Smartha doctrine was quite popular. Worship of village gods was strong in the southern districts of the presidency while the mathas at Kanchi, Sringeri and Ahobilam were regarded as the centres of the Hindu faith. Of the Hindu temples, the largest and most important were the Venkateswara temple at Thirupathi, the Brihadeeswarar temple at Tanjore, the Meenakshi Amman temple at Madurai, the Ranganathaswamy temple at Srirangam, the Krishna temple at Udupi and the Padmanabhaswamy temple in the princely state of Travancore. Islam was brought to the southern part of India by Arab traders although most converts were made from the 14th century onwards, when Malik Kafur conquered Madurai. Nagore was the holiest city for the Muslims of the Madras Presidency. The presidency also had one of the oldest Christian populations in India. Branches of the Syrian church, contrary to historical evidence, are popularly believed to have been instituted by St. Thomas, an apostle of Jesus Christ who visited the Malabar coast in 52 AD Christians were mainly concentrated in the Tinnevely and Malabar districts of Madras Presidency with native Christians forming over one–quarter of the total population of the princely state of Travancore. Hill tribes of the Nilgiris, Palani and Ganjam regions such as the Todas, Badagas, Kotas, Yerukalas and the Khonds, worshipped tribal gods and were often classified as Hindus. Until the early years of the 20th century, the Pallar, Paraiyar, Sakkiliar, Pulayar, Madiga, Izhava and Holeya Hindu communities were regarded as untouchable and were not allowed inside Hindu temples. However, along with the emancipation of Indian women and removal of social evils, untouchability was slowly eradicated through legislation and social reform. The Raja of Bobbili who served the Premier from 1932 to 1936, appointed untouchables to temple administration boards all over the presidency. In 1939, the Congress government of C. Rajagopalachari introduced the Temple Entry Authorization and Indemnity Act which removed all restrictions on untouchables entering Hindu temples. Chithira Thirunal of Travancore had issued a similar had earlier introduced similar legislation, the Temple Entry Proclamation at the advice of his Diwan, Sir C. P. Ramaswamy Ayyar, in 1937. In 1921 the Raja of Panagal's government passed the Hindu Religious Endowments Bill that established government-controlled trusts in the Madras Presidency to manage Hindu temples and prevent potential misuse of their funds. The Raja of Bobbili also