Judy Steele's Family History

I am Judy Steele, and my family descendency is as follows:

Judith Allen Steele
Josephine Holder Allen
Mary Jane Dunegan Holder
David Crockett Dunegan
Samuel Dunnegan and Alcey/Alsey Dunnegan
Absalom Dunnegan

I live in MI, am married and have 5 children and 7 Grandchildren.
I enjoy researching my family tree and am also researching my husband's. That is a total of 58 surnames and it is very easy now that I have a pc.
I've sent out the reunion (2007) letters and wanted to let all know that I found the following spellings on RootsWeb:
Dunagan
dunigan
Dunegan
Dunnegan
Dunnagan
Dunnigan
Donagan
Donigan
Donegan
Donnegan
Dunagin
Dunnagin
I posted all the information re: the 2007 reunion on the above sites.
I could not find any listing for the following spellings of the name:
Donnigan
Donnagan
O'Donnegan
O'donnagan
O'dounnegan
O'Dunnagan
Dunnegin

GOD Bless.
Judy