@ Reply #14, informant on Death Certificate was RM James, Clerk...possibly from the Hospital or the Funeral Director? Everything else seems to add up: 76 at death, 23 at marriage, born Cornwall, Length of Residence UNKNOWN!
@ Reply #12, witnesses to marriage were William Blake and Mary (looks like) Mallaby. (I have some doubts about that being the correct spelling.) Mary is "of Broken Hill" so she's travelled quite a distance to be there. As you would know a lot of Cornish miners ended up in BH.