I will see what I can dig up on the Smiths of Albemarle and Louisa Counties, VA. I have posted some information on my website:
See sidebar for Albemarle County.
Most Gilliams that originated in Virginia originally spelled Gilliam as Gilliam but pronounced it as Gill-um instead of Gill-e-um. The Gilliams that went to SC adopted the Gillam spelling, where those that went West often used Gillum and those of SW Virginia became Guilliam. There was also another group that spelled their name Gilham.