I looked it up and find that son-in-law is from Lafayette Coop's line, brother of William Henry Coop:
William Greyer Coop
| Albert Lee Coop
| Harold Delbert Coop
| Alan Lafayette Coop
| Duane Wesley Coop (Son-in-law)
William Henry Coop (statue in Fairfield square)
Will be glad to continue after the holidays.
Merry Christmas and Happy New Year!
Sam Cook, Milan, MOsam@sjcook.com