Thank you for responding so quickly to my post. I think I may have found another possible child of theirs. I found a revolutionary war pension form for a Charles Langsdon in Jefferson County, Kentucky. He had married Edith/Eda Burks 19 Dec 1788 in Prince Edward per this application. Also it states that Eda/Edith was the daughter of Richard Burks of Prince Edward who had a store Burks's Store . You can find the application on the Jefferson County, Ky genweb site. Please let me know what you think about this info.