Published records (if they exist) may be searchable in the BPL catalog, try searching there.
Original Parish records for Virginia churches are likely to be held in one of three places:
Index to the Journals of the Diocese of Virginia 1785 - 1892
by
Vernon Perdue Davis
Old churches, ministers, and families of Virginia
by
William Meade
Parish Lines, Diocese of Virginia, Southwestern Virginia, and Southern Virginia
by
Charles Francis Cocke