He had an army career, several children were born in Canada - various locations given in various censuses. I'm guessing that he married there too. I've no marriage record. Other children were born in army places - eg Aldershot and an army life ties in with that. But they did seem to be based in Leeds at the time he'd have died.
Funnily, although I'd never thought that he may have died before one daughter's wedding, I did wonder if an abandoned wife might pass herself off as a widow.
I've searched more and more widely without any joy.