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.
Raima Sen's birth name is Raima Dev Varma.
Janjuan is not Gaelic.
The name is not in Scottish Gaelic.
It has no meaning in Gaelic; it's not a Gaelic name.
You don't. It is not a Gaelic name.
The name for "Iceland" in Irish is "an Íoslainn"; The name in Scottish Gaelic: ?
The Scottish Gaelic name Beathag is anglicized as Beatrice.
'Robert' has no meaning in Gaelic: it is a English name.