Everyone knows that Benjamin Franklin had an illegitimate son, William Franklin, born 1729 in Philadelphia, died 17 Nov 1813 in London. Wife, Mary Johnson d' Evelin. He was a loyalist and Governor of New Jersey. He was named in the will of Benjamin Franklin who also named his grandson, William Temple Franklin, born 1760 in London, died 25 May 1823 in France. The grandson was bequeathed 3,000 acres of land in Georgia granted by the government. William Temple Franklin apparently never went to Georgia to claim his grandfather's land grant, but Selby Franklin did. According to Selby's estate papers in Chatham County, he was born 1778 in Philadelphis and died 1817 in Savannah. Selby was a merchant and was married Sarah who herself died at the age of 20 in Savannah on 11 May 1820.
GeorgiaPioneers.com has a wide collection of Chatham County wills (digital images) dating from about 1771.