The Civil Partnerships Act (2004) created a union, at that time for same sex couples only, and rights that are equivalent to marriage so that same sex couples could register their civil partnership.
Roedd Deddf Partneriaeth Sifil (2004) wedi creu undeb, ar y pryd ar gyfer cyplau o'r un rhyw yn unig, a hawliau sy'n gyfwerth â phriodas fel y gall parau o'r un rhyw gofrestru eu partneriaethau sifil.