Elwyn Williams of Bangor, father William Williams mother Margaret Roberts

[Cas (stallc)]

Possible death only one that fits with birthdate with death around 1980 - 1990

Name   William Williams
Death Age   71
Birth Date   26 Aug 1916
Registration Date   Nov 1987
Registration district   Birkenhead
Inferred County   Merseyside
Volume   37
Page   672

Snap - did not read all your post to the bottom Dragon T 

Cas

[Cas (stallc)]

If it is the correct 1939 would check for a remarriage after last child born to couple for Maggie/Margaret. There are some possible in Anglesey registration district.

Not checked for others.

Cas

[bleddyn31]

A lot of this checks out thank you very much, now just to trace Owen and Jane, who I dont have a clue about other than being told Owen was a rabbit catcher and cobbler from Llanddeusant. Kinda stuck on finding any records of these 2 because I don't have any dates. Asked my father if they have any family records and he nor any other family do.

There was something he told me about his granddad(William) being a product of affair.

[Cas (stallc)]

Do you have access to Ancestry ?

Marriage - going from the info Dragon T provided for birth of William Williams in 1916
https://www.ancestry.co.uk/discoveryui-content/view/400803%3A62098

Name   Owen John Williams
Marriage Age   23
Birth Date   1879
Marriage Date   28 Nov 1902
Marriage Place   Llanddeusant, Anglesey, Wales
Father   John Williams, small farmer & lab
Spouse   Jane Thomas - father John Thomas, stonemason
Page number   64

1911 - occupation is rabbit catcher, b 1880 same area
https://www.ancestry.co.uk/discoveryui-content/view/2360798%3A2353

Possible 1921 free index -
Owen John Williams b1880, Anglesey, Wales living Llanddeusant, Holyhead, Anglesey

To confirm you would need to find William Williams b 1916 in same household as parents

Cas

[bleddyn31]

I use MyHeritage(they gave me a year
free because I forgot to cancel a membership and couldn't afford it) which is alright but feel like it's catered to Americans a bit more.

So from your last response the information checks out, now I've gotten to Owen Williams, b. 1823 in Llanfigael as my dead end.

Seems as though my dad's patrilineal side stayed a lot working as farmers in Cae Bach after 1830 or so.

Going to Holyhead on Thursday hopefully I can find any more information out.

[DCB]

William Williams is recorded as Willie Williams, aged 4 years and 9 months, born in Llanddeusant, on the 1921 census, with Owen John, Jane, and 5 siblings.

David

[bleddyn31]

If anyone has access to birth register in Llanfigael 1823 would appreciate it. Can only find 1695-1815 baptisms which is just before Owen's birth in 1823.

[Cas (stallc)]

There is this marriage, note his father has surname Owen.

They did name a son Rowland.

https://www.ancestry.co.uk/discoveryui-content/view/400589:62098

Owen Williams, underage, (under 21) farmer, address Glanygors
Marriage Date   6 Feb 1843
Marriage Place   Llanddeusant, Anglesey, Wales
Father   William Owen, farmer
Spouse   Catherine Williams, widow, full age, address Tyn Y Capel or Cafel -  father Rowland Williams, farmer.
Witness: Owen Roberts - William Hughes

Cas

[Cas (stallc)]

1851 family are at Cae Bach

https://www.findagrave.com/memorial/235616447/owen-williams

Probate names wife Catherine

Name   Owen Williams
Death Date   21 Apr 1892
Death Place   Anglesey
Probate Date   4 Nov 1892
Probate Registry   Bangor