Okay, where are all the Maries?!
Plus, I challenge more Tatianas and Anastasias to declare themselves!
Signed,
[yet another] Olga
P.S. This sounds suspiciously like that classic four-categories-of-personality test: Choleric, Sanguine, Phlegmatic. So, in answer to your next question--and, just for fun, I'll also include four famous sisters of fiction--
Choleric / Anastasia, Amy
Phlegmatic / Tatiana, Meg
Sanguine / Marie, Beth
Melancholic / Olga, Jo