I am wondering if you could help me with a translation for "My beloved". I have found "mo mhuirneach" and also "mo ionúin". Are either of these correct or are there other options?

Thanks for your help.

Ceard faoí "mo stóir"

go n-eirí leat.

There are a bewildering number of ways of saying "My beloved" in Irish.

Mo mhuirnín
Mo stór
Mo chuisle

muirneach and ionúin both mean "beloved", but I've never seen them used as a term of endearment. I suspect somebody looked up beloved in a dictionary, and stuck a "mo" in front of the result!