Geo,
Thanks for explaining all that for me! It's strange how there sometimes is a long gap between generations, for whatever reason. One of my ancestors in the 18thC didn't marry until he was fifty years old, and this created a similar effect.
Have not been able to get further back than 4-times gt-grandfather Francis DUFFIELD, and know nothing of the name's origin as yet.
Will continue to look for my vital green notebook to see whether I might have jotted down details about your Susanna...
keith
N.B. Yes, I sometimes get family links on GenesReunited, but Rootschat has been in a different league!