Just thought there is a slight similarity in my mother's family.
The brother of my Maternal Grandfather just seemed to disappear from records in the early 1920s and his wife started having children with someone else. I couldn't find any Death Certificate in Scotland or indeed in any other part of the UK. I can't remember quite how I found it but by chance I found the Death Certificate of someone with the same first name and exact date of birth passing away in British Columbia, Canada (thankfully certificates there are FOC) in the 60s. The surname used though was his mother's maiden name, well possibly, as we are not sure if her surname was McKay or McCoy! With advice from a person in Canada, I contacted the Library there and got a copy of his obituary in the local press, which confirmed it was him as it mentioned his son still here in Scotland with his real surname! Although, it opened more cans of worms as the obituary and certificate mentioned his "wife" in Canada, who we think after more detective work, was also estranged from her real husband and we don't think she and my relative were, in fact, married, and if they were, they were likely bigamists depending on when they actually did so!
Maybe try googling his date of birth or year and name and see if anything comes up?
