No argument on the literature but thats not what I asked.
Whether or not one believes he was in India or not - there is no historical proof he was.
Since youre browsing the Catholic Encyclopedia read the article on the St. Thomas Christians
Like Peter being the first bishop of Rome it is more likely than not merely more Catholic mythology.
It is more likely than not the witness of the early church.
Probably as reliable a "witness" as the 50,000 pieces of the cross that are scattered throughout Europe in RC churchs.