Were you ever able to resolve this puzzle? We are related, as Delia is my great-grandmother (and definitely in my line, and not the other Delia Silk mentioned on this board). She married Edward Albert Sweeney, and was the mother of my grandfather, James Martin Sweeney.
I'd be very interested in sharing research and comparing notes. Please drop me a line at your earliest convenience
madkins1868@hotmail.comMark Adkins