It is. It's one of the Irish Gaelic versions of John. The other one is Eoin.
Rego Sen's birth name is Regaip A. Sen.
Rimi Sen's birth name is Shubhomitra Sen.
Sushmita Sen's birth name is Sushmita Shubeer Sen.
Victor Sen Yung's birth name is Yung, Sen.
Janjuan is not Gaelic.
It has no meaning in Gaelic; it's not a Gaelic name.
The name is not in Scottish Gaelic.
Raima Sen's birth name is Raima Dev Varma.
The word for "name" is ainm in Irish (Gaelic);In (Scots) Gaelic it's also ainm.('Surname' is sloinne in Irish; sloinneadh in Scottish Gaelic.)
Makayla is not a word or name in Gaelic, there is no Gaelic pronounciation.
It is not a Gaelic name and has no meaning in Gaelic. In the Irish language Bible it is spelled Iárad FWIW.
"Matthew' is not a Gaelic name; it's a English name.