https://www.gov.uk/government/publications/application-to-re-register-a-childs-birth-and-add-the-fathers-details.cy
Cais i ailgofrestru genedigaeth plentyn ac ychwanegu manylion y tad - GOV.UK
Ffurflen GRO 185 i wneud cais ailgofrestru genedigaeth plentyn ac ychwanegu manylion y tad.