No, I wouldn't group them together either.
But those two are the only Margaret's I could think of. I'm in Sweden, so I've never met Margaret or even heard it in real life. I'm more used to Margareta, which is used here :)
Monsters are real, and ghost are real too. They live inside us, and sometimes, they win
- Stephen King
PNL: http://www.behindthename.com/pnl/45898
Top rated: Mabel and Zacharias
Bottom: Lykke and Isak