Dear Katherine, We were really short of male Fullers around these parts. In our Fuller family, (my mother) there was only one brother and in their father's family, he was the only child ... of course he is deceased now. After reading the article, I wonder how a decent DNA comparison can be done in situations like this? Just curious. Thanks, Mary Smith (My uncle, William H. Fuller, Jr., (born in Georgia,) took part in a Fuller DNA study last month and he had only one match in Oklahoma. Would that be a valid match if my uncle had no sibling with DNA to compare his match to?)