Proelia or Proelio?

[nobody can eat fifty eggs]

What's your take on it? I've just had an argument with my mate cos his lad's just had a tattoo done with "Proelia" in our motto. I think it's Proelio and will swear by it, my mate swears different says he's done all the checks and everything.
Is it Proelia or Proelio? I know they both mean basically the same thing, but if I was gonna have the tattoo done I'd want it bang on.

 

[Rolee]

O

 

[Tricky_Trev]

It's an 'a'

 

[Joehannes]

It's 'o'.

 

[LHarper]

100% an 'O' if going by the badges on the official kit.

 

[ManCitizens.]

Should have just had a tattoo using the same font from our badge. I think 'o' though.

 

[Inter Me Nan]

Looking at my City mug now it does look like an 'a' but if you compare it to the 'a' at the end of 'Superbia' it's different.
So what i'm trying to say in a longwinded way is it's an 'o'.

 

[Impeccable]

http://www.mcfc.co.uk/the-club/club-history

It's 'o'. See 1997. It appears your mate didn't do the proper checks!

 

[nobody can eat fifty eggs]

I think it's an "O" too if you compare it with the "A"

 

[Joehannes]

Can't be certain but 'in' in this case takes ablative. Ablative singular of Proelium is proelio, I think. 'a' would be nom plural which would make no sense.