Looking for Thomas Ryan

Information required on Thomas Ryan and his wife Ann McNaughton who moved from Victoria to Rockhampton around 1862. They had two children with them and whilst in Rockhampton had another three girls. Ann returned to Victoria around 1880 and remarried. Trying to find out if Thomas died in Rockhampton somewhere after 1871 when his daughter's birth was registered. He was noted as a miner in New Zealand Gully. Also looking for information on his son, John Ryan who was 18 in 1871.