pen-blwydd
PENBLWYDD PRIODAS DDIEMWNT HAPUS : Happy diamond anniversary
PENBLWYDD PRIODAS BERLOG HAPUS : Happy pearl anniversary
Hanner canmlwyddiant priodas hapus.
Pen-blwydd priodas aur
Pen-blwydd dri mis hapus, cariad.
It is the same as a birthday. Birthday : Penblwydd Happy anniversairy (as in a wedding) : Penblwydd priodas hapus (literall translation : Happy wedding birthday
I know for a fact that people in Wales are called Welsh.
"You are Welsh" = Rwyt ti'n Gymreig
Draig Gymreig
It is called silver or silver year.
'gyda dy Gymraeg di' is 'with your Welsh'
The Welsh word for "Welsh" is Cymraeg :)