Mary was born in 1772. She is the daughter of John Lee and Mary Unknown.
https://www.thegenealogist.co.uk/search/master/?type=person&source=&search_type=person&master_event=&person_event=&fn=mary&phonetic_mode_fn=1&sn=lee&phonetic_mode_sn=1&kw=NORTHUMBERLAND&yr=1772&range=2&search=Search#loadwindow_-992812649
Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.
L > Lee > Mary Lee