Simple question for a Gaelic speaker

Factual Questions
1

I know that “Sinn Fein” is Gaelic for “We ourselves,” with an implication of “Just us, All by ourselves, no help from anybody.”

What would be the singular version of that phrase? That is, how would you say, “Me myself,” or “All by myself, single handed.”

2

The singular form would be “Mé féin” meaning “myself” in the sense of “I did it all by myself.”

Fergus

3

And to be really pedantic, it’s actually just Irish for “ourselves” - you don’t need to put the “we” in front of it.