Pasiwyd y Ddeddf Cyfraith sy'n Deillio o'r UE gan y Cynulliad Cenedlaethol ar 21 Mawrth ac fe gafodd Gydsyniad Brenhinol ar 6 Mehefin.
The LDEU Act was passed by the National Assembly on 21 March and received Royal Assent on 6 June.