Hi Rich, I'm not related to the Compher's, but I am researching the Snoots family of Loudoun and have a few Compher's marry into the family.
Charles Compher 1845-1932, son of Samuel Compher & Hannah Williams m.1874 Mary Ann Snoots 1842-1918, dau. of John & Dorothy.They had one son named Harry who has descendants.
Also: Edward 1869-1937, don't know parents. married Ellen Snoots 1874-1957, dau. of Samuel Snoots & Sarah Williams and niece of Charles and Mary Ann Snoots Compher. Had a son and a daughter, not many descendants.
Get in touch if you would like this info, maybe we can help each other out! JEN