It sounds like a combination of Sue and Ella to me, too.
I've known a couple of girls named Suellen, who've said that their name was simply their parents combining Sue and Ellen.
Edited to add: I didn't realise that Suellen was in the database. The entry says that it's a combination of Susan and Elinor, and has a literary origin. Suella could therefore be a shortening of Suellen as well as a separate creation.
♦ Chrisell ♦
All we have to decide is what to do with the time that is given us. - J.R.R. Tolkien.
This message was edited by the author on June 28, 2006 at 11:44:09 PM