Siobahn is pronounced "Shev-on". it's Gaelic if I remember correctly.
I like Niamh actually. Again, it's Gaelic and pronounced "Neev".
My sister's name is Aisling. Our mother was fond of it, and again it's Gaelic, but it's pronounced Ash-ling *with* the G, not Aisling (as in the word "maze"), Ashley (no G) or any other cutsey variations.
Aisling. ASH-LING. :-)
My name is Wesley. Not Wesly, Wesely, Wesly, Wessley, Wesseley or anything stupid. Wesley as in Wesley Crusher or Wesley Snipes.