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I don't have a subscription to Ancestry but I got a glimpse that there are 15 family trees on the site with the name Will Owen North
William Owen (North) found in 15 trees with photos
Ancestry is a pay site.
Dear Ms. Blake,
Thank you for posting your request on History Hub!
The National Archives is the repository for the permanently valuable non-current records of the United States Federal Government. We suggest that you contact the local newspaper or a historical society from Llanfair ME to inquire about any photographs of your Dad’s birth family. We also suggest that you consult The National Library of Wales that has a variety of church and civil records available for online use and may be a good resource for continuing the search for the family. Also, please review the FamilySearch Research wiki for Llanfair Mathafarn Eithaf, Anglesey, Wales Genealogy.
We hope this is helpful. Best of luck with your family research!