I do not know of a Jerome Sydnor in my branch of the Sydnor family. My family is from Logan County, KY. They came to Kentucky from Virginia in the 1800's.
Sydnor Thompson has written a book about the lines of Sydnors originating from Fortunatus Sydnor who came to the United States around 1660 from England. It is entitled -- The Sydnor Family Saga. You might try researching this book.
Hope you find the information.
Susan Sydnor Carroll