I have no direct information on Thomas yet only guesses. I guess he might be from the Co. Wexford area since that is where Anna McGrath Cloney is probably from and there should be some connection to motivate her to send money to bring him over. I guess he might be from the CO. Wexford area since I did a search through the Irish Birth Index for Kervins from 1864-1900 and about 25% where born in Co. Wexford or very nearby. As to siblings, I have no guesses on that excpet that he probably had some since he was Irish (!).