Thanks so much for your help. The funny thing is,
the person who sent it was a boy in his teens, and
as far as I know he gave the pic to my Grandfather.
Is it possible that the term for father in law could
mean something different in possibly a dialect or
something? I'll have to scan the image so you all
can see it. The boy was a childhood friend of my
grandfather's, as he appears in multiple photos (and of course noone now knows who he is )