If you want to be seroiusly rigid about this, St Martin's was the original and only parish, which would narrow it all down quite a bit.
I was born and bred in Birmingham,l and am proud to think of myself as Birmingham born. I never say Brum, I never say mom, but I do know what a gambol is and I still say 'red sauce'. My mother was born in Ladywood in 1923, but moved to Warstock in 1928. I was born in Warstock in 1947 and after moving to various areas over time, I moved to Tamworth in 1972, but worked in Birmingham until 2001. I don't like Brummie slang, and none of my family have ever spoken like that, although I do admit I must have a midland intonation.
So, all in all, I consider myself a Brummie, but it looks like half the forum at least would not consider me so! Hmm, not quite sure what to make of all this! Shortie