Hi Rachel,
I am pretty sure Patrick was born in Ireland, parents Michael & Johannah (Caden) Ievers. Patrick was married to Margaret May on 29/04/1878 and then immigrated to Australia on the ship La Hogue, they did in fact have Mary and Thomas in Ireland. There are passenger records for all 4. I can't seem to go any further back from Michael and Johannah... I'm a little stuck. I do have information on all Patrick and Margaret's children if your interested.
Cheers,
Jenni