+--John P. Derr  (JAN 17 A.D.-JAN 17 A.D.)
+--John Peter Derr  (2 JAN 1788-18 NOV 1866)
Lavina Derr  (ABT 1833-ABT 1892)
|                 +--Jan VonBorculo  (BEF 1660-JAN 16 A.D.)
|              +--Harmen Jans VanBorculo  (JAN 16 A.D.-JAN 16 A.D.)
|              |  +--Jannet   (JAN 16 A.D.-JAN 16 A.D.)
|           +--William Hermnese VanBarkelow  (JAN 16 A.D.-JAN 17 A.D.)
|           |  +--Willempje Warmers  (ABT 1635-ABT 1697)
|        +--Jacques (James) Barkelow  (ABT 1700-ABT 1780)
|        |  |  +--Jacquas Cortelyou  (1625-1693)
|        |  +--Martha Cortelyou  (ABT 1669-ABT 1721)
|        |     +--Neltje VanDine  (1635-1693)
|     +--Barrnt (Barnett) Barkelow  (24 MAY 1730-1805)
|     |  +--Jannetje (Jane) Bernjtsen  (ABT 1705-AFT 1780)
|  +--Cornelius Bartlow  (4 NOV 1760-4 DEC 1833)
+--Ann Bartlow  (28 DEC 1793-21 DEC 1882)
   |  +--John Shamp  (JAN 17 A.D.-JAN 17 A.D.)
   +--Catherine Jane Shamp  (1770-2 APR 1839)