'Cushti' is not a word in Irish Gaelic.
It's an English phonetic spelling of the Irish 'Rua'which means 'red-haired'.
Barúch is a phonetic Irish spelling of the Hebrew name "Baruch". In Irish it has no meaning, in Hebrew it means blessed.
Assuming you've the spelling correct then it means 'Dig'
If you mean 'inti' it means "in-it" or "in-her". Innti may be an older spelling.
It's a phonetic English spelling of the the Irish Gaelic 'beag' meaning 'little'.
It is an English spelling of the Irish Gaelic Caitlín[kotchleen] which is a version of Catherine (pure).
"agrah" look like a phonetic rendering of "a ghrá" "a ghrá" means "my love"
Keirra is a variant spelling of Modern English Keira, which came from the English Kira, born from the Irish Ciara, which is the feminine form of Ciar, and is ultimately derived from the Irish ciar; meaning "Black."
'Shamus' is an English phonetic spelling of the Irish Séamus and Scottish Gaelic Seumas which are equivalents of James.
Síle is the Irish language spelling.
"Mavourneen dheelish" is an English language spelling of the Irish Gaelic Mo mhuirnín dílis which means "My dear beloved".
It is an Irish version of Clare/Claire.