Beth
Wikipedia says her name was Sarah Louise Heath in the entry for Sarah Palin.
Isabella swan but im not sure about the middle name!
It is his middle name. His first name is actually Jared, but it isn't uncommon for people to answer to their middle names more often.
As far as we know, Stephenie has not released an actual middle name for him.
Heath Shuler's birth name is Joseph Heath Shuler.
Heath Allyn's birth name is Michael Heath Allyn.
Heath Milo's birth name is Heath Michael Milo.
Heath Evans's birth name is Bryan Heath Evans.
Arch Heath's birth name is Archibald B. Heath.
Hy Heath's birth name is Walter Henry Heath.
Jimmy Heath's birth name is James Edward Heath.
Zoe Heath's birth name is Zoe Elayne Heath.