Leonard is FEMALE. The name may or may not be mis-transcribed but her gravestone says "Leonard Smith". The Find A Grave record refers to 'Leonard Smith Lord' with spouse Thomas Lord. A note says "Leonard as written on stone, Leander as written in cemetery records'.
Leonard Smith was born in 1744, the daughter of Ephraim Smith and Mary (Scott) Smith.
↑ "Massachusetts, Town Clerk, Vital and Town Records, 1626-2001," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:FHB8-T9C : 8 November 2017), Thomas Lord and Leonard Smith, 06 Nov 1760; citing Marriage, Athol, Worcester, Massachusetts, United States, , town clerk offices, Massachusetts; FHL microfilm 2,230,843.
It may be possible to confirm family relationships with Leonard by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: