I am hoping you are still visiting this site.I have a copy of a letter written by Thomas in which he discusses leaving Ennistymon with his father "John" and sister "Agnes" in September 1851. He travelled to Adelaide and then Melbourne where he met his brother "John" and another sister "Mary". The letter then briefly describes his times in the Bendigo gold diggings and farming in SA.
If you don't already have a copy of this I'm happy to send you a copy. I would also be interested in any information you have about the family.