+--Albas STRASDATIS  (AFT 1700-)
      +--Krisas STRASDATIS  ( 1756-)
   +--Johann STRASDATIS  (22 NOV 1799-16 AUG 1871)
   |  +--Catharine DINKUNS  ( 1790-27 FEB 1833)
+--Ferdinand STRASDAT  (06 APR 1836-)
|  |  +--... THIELERT  (AFT 1700-)
|  +--Charlotte THIELERT  ( 1808-23 JUN 1849)
Auguste STRASDAT  (19 APR 1864-)
+--Wilhelmine SPEI  (AFT 1800-)