Looking for Cousins William and John Shaw Jumped Ship IN Oz Abt 1920

William Shaw, my grandfather, jumped ship in Oz abt 1920 with his cousin John Shaw. Both were born in Birkenhead England in December 1887. William was married to Mary Burn and they had one child, my mother Elizabeth, who never knew him. She was born in 1915. John was married to a woman named Conway. I have recently acquired pictures of both of them. If there is anybody out there who has any information I would be very happy to hear from you and swop tales Thanks Paddy