Frances Keen, death record: England, 1765.
I have a copy of "The London Chronicle or, Universal Evening Post" Vol. XVII, No. 1279 dated from Thursday, February 28, to Saturday, March 2, 1765. It lists the following death: "On Wednesday died at Islington, Miss Frances Keen.She was to have been married to a gentleman of considerable fortune in a few days."No more info, but I hope this helps someone.