psammead this was so almost dd's name, infact when she was 3 days old i took her to a concert ds1 was performing in at school, and people said what was her name, and i said, we arent sure but Genevieve possibly, anyway what decided it for me was that even when i just introduced it as her 'maybe' name, people said on Jenny for short!! and i hate jen/jenny and i just knew that she would get it shortened to that and it woudl drive me mad!
i was planning that if we shortened it it would be to Vivi or something like that.
i really LOVE the name Genevieve, and if you like Jen/jenny then go for it, but if you dont like those shortenings then i would think carefully.