The next pastor [of the Oil Creek, now Titusville Presbyterian Church] was Rev. G. W. Hampson, who was ordained and installed as pastor by the Presbytery of Erie, June 27, 1832.  He continued his relation for some ten years, when the relation was dissolved.... 

At the division in 1838, [the Gravel Run Presbyterian] church was divided, a portion adhering to each branch.  The New School branch is called also Gravel Run; Rev. G. W. Hampson is the pastor.

History of the Erie Presbytery, 1868 Click to view the source for this material.