Both were Reveres. One was also the grandson of Joseph Warren, a revolutionary leader killed at Bunker Hill.
Do you happen to know which part of Gettysburg the one grandson was at?
One of my ancestors was killed at the Peach Orchard, Barksdale’s Brigade, on the 2nd day. Buried in the field. There’s a freeper whose wife is descendant of General Barksdale, who was also killed in that same charge through the peach orchard.