I have traced my ancestry back to a William WILKIE and/or John WILKIE, whose daughter Sarah Elizabeth WILKIE/WILKEY was born in SC about 1829. She married in Illinois, to William VAN DYKE.
Sarah's brother was John J. WILKIE. They settled for awhile and both were married in Kane Co. Illinois. It seems they raised their families there and when their children were of marrying ages they moved respectively to Michigan and Nebraska then both families finally came to California.
John J. WILKIE was married to Ellen or Ella. Their known children were: John L. and Charles A. WILKIE.
It appears that Sarah was the only one born in SC. The others in New York.
I wish I could get further back on this but I have no absolute proof of who Sarah and John J. WILKIE'S parents were.
Have you heard of these names?
For what it is worth, Sarah and William named their children George, John E., Caroline E., and Harriet Louise.