Found by a correspondant:
born About 1378
Quatremain, Maud
Quatremain, Thomas born About 1338
http://users.legacyfamilytree.com/USPresidents/namesq.htm#SINCLAIR
Both are in the Genealogy of John Quincy Adams 6th United States President
Sinclair
John S. Quarterman <jsq@quarterman.com>
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