William Corbi/ett, b. about 1720, Virginia

Greetings...I have traced my Corbi/ett lineage back to a William Corbitt, b. about 1720 who married Ann Tyner, b. about the same time period both in Isle of Wight, VA.Ann was the daughter of Nicholas & Elizabeth Tyner.William & Ann had a son, John Corbitt, b. about 1745, Edgecomb Co., NC.Any information going any further back in time would be most appreciated. Thank you for your time & attention
...DLF