Justine, a Twilighter, dugg up some interesting info on the meanings behind the names of the Twilight characters, check it out.
**Actual meanings from behindthename.com**
»Edward: Means “rich guard”. (so true!)
»Isabella a.k.a. Bella: Meaning “my God is abundance”. Isabella of France married Edward II. (WOAH!)
»Jacob: Meaning “holder of the heel” or “supplanter”. (Take what you can from that…)
»Jasper: Means “treasurer” in Persian.
»Rosalie: Means “Rose” (Obviously… How about, “beautiful rose?”)
»Alice: Composed of the elements adal “noble” and heid “kind, sort, type”. (interesting)
»Emmett: Meaning “whole” or “universal”. (Hmmm…)
»Carlise: Meaning, “Strong as Lugh”, Lugh was a Celtic god of the sun and craftsmanship. Also known as “the shing one.” (So, he’s as strong as “The shining one”? Interesting relation to vampires!)
»Esme: Means “esteemed” or “loved” in Old French. (awww)
»Charlie: Meaning, “Man, army, or warrior.” (hmmm….)
»Leah: Meaning, “Weary” or “Mistress or ruler.” (Fits her well.)