I spoke to a woman at the FHC yesterday who told me that the Quakers decided to go along with everyone else's dates in 1752. So all Quaker dates after 1752 should be in our regular calendar keeping. All dates before then would be off. For example, 21 1m 1735 would be March and 10m would be December. Now, as far as Cope is concerned, who knows, for sure, as Doug has previously pointed out, which terminology his dates are in. There are some instances where Cope lists dates in the "non-Quaker" terminology, but the rest of the dates, I think, would need to be ascertained by primary proof. My family record dates match Copes, but then, again, my family were Quakers until my Dad!! I didn't know their calendar was different! Carole