I Googled the name and came up with a baby-naming site that said it's Scottish, a variant of Isla. Hmm.
Since I'm an avid genealogy researcher, I went to the messsage boards at Ancestry.com and did a search for "Isela". I got almost 100 hits, mostly for people of Mexican ancestry, a few Italian, including some born in the early 1900s. No indication of where the name came from, but it apparently has been in use for a while.
This message was edited 2/5/2010, 12:10 AM