Thanks again.
I agree there could have been 2 Martin Collins.
Martin died in 1939 & Eliza in 1943, both in Qld. They are buried together in Drayton Toowoomba cemetery. They had children in Qld in 1884, 1886, 1889, 1890, 1894 & 1897. His death certificate gives his parents as Martin Collins and his mother as Margaret McCarthy, and his birthplace as Kilcommon, Tipperary, Ireland. It also says he had been 72 years in Qld, so he came to Qld about 1867. He could have come to somewhere else in Australia before that but he is listed as 86y at death, & 28y at their marriage in 1881, so was only born about 1853. Their marriage certificate says again that he was born in Kilcommon, Co. Tipperary, Ireland and had those parents. It also says he was a bachelor. It also says Eliza was a spinster, but it does have a marginal note that she was actually a widow. She had previously been married to William Fox and was married as Eliza Fox.
I wonder who the Martin and Mary were who came to Australia in 1841.
These are the Martin Collins people I've found who came to Qld as assisted immigrants:
Martin 21y on the Rockliff in 1863, with Maurice 24 and Daniel 25 from Plymouth
Martin 11y on the Earl Russell in 1864 with John 39, Margaret 33 (or 13?), Simon 14 (together on list) Patrick 23, & Cornelius 24 & John 22 (together on list) from Plymouth
& Martin 20 & James 20 on Great Britain in 1873 from Liverpool
By the way, there are posts about Martin's sister here:
http://boards.ancestry.com/SearchResults.aspx?db=mb&gss=ancMB&hc=10&rank=0&adv=&p=surnames.ryan&csn=Ryan&cst=board&gskw=collins+kilcommon&psrch=&_F00029CB=&_F00027E2=&period=&_F0002BF1=&_80004003and
http://boards.ancestry.com/surnames.collins/5944/mb.ashxShe married 4 times in Qld:
1875 C997 Michael McLauglin Margaret Collins
1878 C183 Margaret McLaughlin Michael Carroll
1887 C556 Margaret Carroll William Hayes
1902 C701 Samuel Muckle Margaret Hayes
