Ireland.
I am a body thats for sure
- one landmass
Ire I held for my neighbours,so pure
- "Ire" a clue for "Ireland", I guess. No idea who the pure neighbours are.
My north teamed up while the south went solo
- Northern Ireland versus Eire.
we remember the severe lack of the potatoe
- Potato famine
My symbol riddled with the need for peace
- ?
the war of the gods needed to cease
- Sectarian conflict
green to the left, orange to the right
fictional characters at the root of the spite
Jesus, Mary, etc...
and the title refers to Father Ted, of course.