Hello Siobhan
My name is Kim Thomson and I live in Australia,
the Patrick Ryan that you are searching was my grandfather Michael Joseph (Joe) Ryans brother. From what I know Patrick left Australia at about 14 years of age and travelled abroad and made a life for himself in America.
Yes he married and had a daughter Ayran.
I have a cousin who has been to America and met Ayran and her family. Hope we can discuss this futher. Kathleen on this link is Ayrans daughter.
Cheers
Kim