A very long time ago, I was forwarded a copy of a message on RootsWeb message boards, originally a reply to you from Wally Corrin, as the sender knew that I was from that Corrin family line. Not sure whether you received the message but Wally stated that he had info on a Stephen Corrin, born 1887, grandson of Richard Corrin and Mary Kewley of Foxdale.
Perhaps you could try to reach Wally via this site for verification.
Richard and Mary (who were my great grandparents) were married 13 July 1842 at the parish Church at Michael. Also if you visit St Paul's Church Foxdale, you will find evidence of the Corrins in the Church interior and many Corrin gravestones in the Yard behind. Most of the Foxdale Corrins were miners.