I think John Wylie snr died in June 1917, aged 79? I can't find any record of his wife, Mary Wylie snr though. Who died first?
I am wondering if her full first name was different to Mary.
The Browns in L'derry had a sister Eliza Brown born in c1843 in Newton upon Ayr, Ayrshire from a previous marriage, who I can't trace, and I was wondering if this was Mary???
Rather clutching at straws. It would be great to have her full name and maiden name, which would be on the 1863 marriage cert (which again I can't find).