No: HPFGUIDX 12798
I just found the following in a web search on "widow of kent":
Works by Women and Anonymous Writers from 1770-1830
<snip>
Anonymous. The Widow of Kent, or The History of Mrs. Rowley.
London: F. Noble, 1788
PR/3991/A1/W63/1788 S-M
Source: http://www.english.upenn.edu/~dwhite/pascoe2.htm
"Mrs. Rowley" ?!!!
-Jim.