From William and Mary Hewson
AL: University of Pennsylvania Library
<March 22, [1771–744]: a note in the third person, in Polly Hewson’s hand. Reminds Franklin that he has promised to dine with them next Thursday.>
4. The Hewsons were married in July, 1770, and he died suddenly in May, 1774. The invitation could have been in any March between those dates, and according to our practice we are assigning it to the earliest possible year.