You are refering to Thomas who went to the southern tip of India. While there he set up a community of Christians in Kerala who are today referred to as the Syriac or Malabar Christians (members of the Oriental Orthodox Church)
Hi, Krishnakanta, yes, but I understand there are other Thomas Christian churches other than that one. Including one that's rather Jewish. But Thomas originally came to the northern coast, with the story that he visited Kerala before he was killed. But Kerala had a Jewish colony from centuries before Jesus, and the Thomas Christians probably considered themselves Jewish.
What Madhuri is referring to is a tradition that says that Jesus survived the crucifixion and was forced to flee Palestine. He traveled east into Kashmir where he lived, studied, and taught until he died at 80. Some local Muslims believe to have his tomb in that region where there is a man burried according to Jewish custom underneath a Sufi saint burried in the Islam custom.
I don't know if it's true or not but that is the story
Yes, I'm familiar with the story, but there are no "Thomas Christians" still living in India to confirm it. And the otherwise goofy Acts of Thomas, that told the story, somehow happening to know the king of that small part of India matching the story of the Thomas Christians now. It gives the Thomas story a lot more credibility. And after all, I always figured, if the twin brother of Jesus, easy to see how people could get confused and think it's Jesus.