I'm writing from Tasmania, Australia. I found your info while googling my grt grt grandfather John Bresnehan who was transported from Tipperary, Ireland to Van Diemans Land (now Tasmania) in 1845. By incredible coincidence and with no knowledge of the above connections I named my daughter Shea Louise Bresnehan. She was born in 1984 and is now living in Melbourne.
I'd love to find out more of our distant connection.