John,
There is a William Daniell who is listed in Early Settlers of Georgia. He is in Greene Co., along with several other Daniells. Do you have any information about one of the other Daniells -- Eustace Daniell? The name Eustace is seldom spelled the same way twice! He appears in several of the old Greene Co. records from the late 1790s. I have read some obscure information that he is the father on one of my ancestors.