Hi Jenny, yes, have seen them and getting confused.
I haven't yet seen anything which indicates William is Mom's uncle, but will keep trying.
A bit of family history background.
I am aware of all of Mom's uncles, that is her father's ( Thomas ) brothers.
John Arthur, Edgar, Fred & Harry.
William apparently disappeared to I am told Liverpool.
The fact I know nothing of him apart from Sheffield Census records is ' bugging ' me and has done ever since I started out on family history research some 40 years ago.
No doubt many of you will have family members you know nothing about !