Trivial Trivia - taking trivia to new levels

[Laurie Verge]

This trivia question is for our graveyard sleuths (Rich, Jim, and Dave that I know of). Many of us have seen the clip from the old TV show, I've Got A Secret, featuring the last person to have been present at the Lincoln assassination.

That person died shortly after the show. His name was Samuel Seymour. Where is Mr. Seymour buried?