I don't really associate
Erin with
Ireland at all. It doesn't make me think of it. It sounds exactly the same as
Aaron in my accent (MI). I've always liked the name
Erin, and still do. I've gone back and forth on whether I'd consider using it. Currently I think I would, although it's not at the top of the list. I think it's a really energetic name.
I think I pronounce
Megan with the E as in egg, but when I'm saying it outloud it sounds more like MAY-gan. Plus
Nick tells me when I say
Meg it sounds more like Mayg, which is probably why people often think I'm saying
May.
Megan and
Meghan are the same. I love
Megan, obviously.
Meg gets called that sometimes, even though it's not her name.
Meghan I don't really like, the h seems unnecessary. I've known tons of
Megan of a variety of ages--although the oldest probably no older than 40, currently. The youngest I know is 3.