Speaking of St Thomas, you meet a lot of South Indians with his name. Seems that India was evangelized by the Doubting Thomas himself. I believe Christianity came to India in something like the 5th century. The other common given name I've come across is Winston. (Most of the Indian Christians I've met seem to be from Kerela where they speak Malayalam, not to be confused with Kannada in Karnataka, Telegu in Andhra Pradesh, or Tamil in Tamilnadu.) All four are Dravidian languages (i.e., not genetically related to Sanskrit and Avesta).