+--Isarel Worthington  (NOV 1833-11 FEB 1902)
Mary Etta Worthington  (JAN 18 A.D.-JAN 18 A.D.)
|     +--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)