Additionally structures or objects within the curtilage of a listed building which have been present on the land since before 1st July 1948 are also given protection.
Yn ogystal, mae strwythurau neu wrthrychau o fewn cwrtil adeilad rhestredig sydd wedi bod yn bresennol ar y tir ers cyn 1 Gorffennaf 1948 hefyd yn cael eu gwarchod.