Okay, having one grandmother from County Cork in Ireland and the other from Cannes in France I was always known as the Irish Frog at school. I can do either accent quite nicely thank you lol.
My true accent, heaven knows, seemed to have picked a bit of something from where ever I've lived and from the family.
Dad, although half French was raised in London and had a thick cockney accent.
I was actually raised by my Irish grandmother in Hampshire (South East England) so I guess I have a Hampshire accent, well until I get mad and the Irish begins to creep out, when that happens the family say it's time to run for cover lol.
My mother sent me to drama classes to, as she put it, learn to speak proper English.
Well sorry folks, all the training in the world wont stop an accent from slipping out at some time or another lol.