Bhí tú ag tabhairt aire do do chol ceathair Dé Sathairn
Not your cousin but married to your cousin. Or can mean Cousin on other side of family.
'Will' is not an Irish word and has no meaning in Irish.
My [male] cousin
It doesn't mean anything in Irish.
It means the Saturday after next Saturday or in other words the Saturday that is a week after next Saturday.
Nikko doesn't mean anything in Irish.
It doesn't mean anything in Irish.
If you mean the Irish (Gaelic) it is not in that language. Irish has neither 'k' nor 'y' in its alphabet.
It doesn't mean anything in Irish: it's not an Irish name. I believe it's French.
"eme" doesn't mean anything in Irish. It doesn't look like an Irish word.
"Isabelle" doesn't mean anything in Irish, but the Irish version of the name is Sibéal (shibael).
Does Ballavue mean anything in Irish? I can find no example of it as a placename. 'Vue' is not a word in Irish.