He was a gunsmith and blacksmith. He manufactured farming implements and during the Revolutionary War made smoothbore guns.
"Philip's tract lay about four miles south of Lancaster, in what is now West Lampeter Township. In the 'Biographical Annals of Lancaster County' published in 1903, it is said (p.337) that Philip LeFevre, the son of Isaac, received by deed his large property in West Lampeter Township, the consideration being 'natural love and affection.' "
It is possible that Joel Ferree (1710-1801) learned his gunsmithing from his cousin Philip LeFevre. Philip was a gunsmith at Big Springs in Beaver Valley, and made guns reportedly from 1731-1766.
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[Editor's Note (CAH III) - The later date, 1766, must be an error or a misprint as Philip died in 1761.]