I'm looking for the death records, but honestly I'd be glad for any life records, relating to Martin Fitzpatrick.
The only information I have comes from my grandma (he's her great-uncle), which is that he emigrated to Australia before her mum was born in 1897, that he lived in a boarding house with a woman until his death, and that he died unmarried and without children. The woman he lived with sent his watch back home after his death, so presumably she was able to register his death with some of the relevant family information.
He also visited Ireland around 1902 when my great-grandma was five years old, as he was her godfather.
From my own research - he was likely born between 1855 and 1867 in County Limerick, Ireland. He's referenced in his parents' obituary (they died in an accident) as they left behind three children, and I've found birth records for their other two children. His parents were Thadeus/Thomas/Timothy Fitzpatrick, a shoemaker, and Catherine Fitzpatrick (nee Hanifan). His siblings were John (b. 1857) and Mary (b. 1863).
I think he either immigrated in 1876 on the Lochlee to Queensland, or in 1884 on the Warwick to Sydney. He may have died in 1940, as I found a record of a Martin Fitzpatrick buried in Rookwood Catholic Cemetery, Sydney, who was about 81 years old (b. c. 1859), but there's no headstone so I'm not entirely certain.