Mark Thrash

I recently visited the Civil War battlefield and read in one of the exhibits there about a man named Mark Thrash who supposedly lived from 1820 to 1943. I was told by park rangers that this claim was verifiable and was wondering if anyone out there had any information on this.

Welcome to the board, ralphcow! I think your question belongs in General Questions (for queries with factual answers), so I’ve moved it over there.

A simple Google search reveals this press release about a book:

Source: (PDF warning.)