happy to try to help...there were numerous 'William' in the line back then, as well as nicknames of Jesse and Berry, or Benny. 'Ellzey' sometimes was recorded as 'Elzey' or visa-versa.
I have data all the way back to 1703, starting with an original 'Elzey'. While your question might be from one of my missing lines, or confusion from multiple and like first or nicknames, I need the following to try to help.
which Ellzey are you related to, being as specific as possible, including at least three generations, if possible.