I am posting this in hope that it will help someone. A local lady did the research on theCivil War info for book here in Lancaster honoring our Civil War vets. The other info is my research from the 1850 census and the 1881 landbook.
NICHOLAS P BUCHAN----------1790 POLLY BUCHAN --------------1795 SAMUEL SPENCER BUCHAN------1833-1864
FROM CONFEDERATE MEMORIAL OF LANCASTER COUNTY BYSANDY P SHERRILL.
SAMUEL SPENCER BUCHAN--ENLISTED 5/22/61 IN 40TH VA CAVALRY, COMPANY E. FARMER.MWIA AT UNKNOWN BATTLE IN 1864.DIED 10/14/1864 FROM A BROKEN FEMUR IN RICHMOND. ON THE 1881 LANDBOOK THERE IS A 234 ACRE ESTATE FOR SAMUEL SPENCER BUCHAN LISTED AT MOSQUITO CREEK, 17 MILES SOUTHEAST OF THE COURTHOUSE.
This is touching as it extinguished this family in this area. Hope to find more in subsequent research.