+--Johann George Lahr  (5 JUL 1799-1 NOV 1866)
Jacob Lahr  (25 AUG 1824-)
|           +--Johann Jacob Dressler  (1670-27 OCT 1755)
|        +--Johann Andreas Dressler  (30 NOV 1714-)
|        |  +--Eva Magdalena Rathgeber  (20 SEP 1686-1 FEB 1768)
|     +--Johann Andreas Junior Dressler  (28 MAY 1747-2 OCT 1828)
|     |  +--Anna Barbara Bernhardt  (1716-)
|  +--John Jacob Dressler  (25 DEC 1770-5 APR 1852)
|  |  |  +--Mathias Ley  (22 FEB 1706-26 AUG 1783)
|  |  +--Mary Margaret Ley Loy  (1750-1785)
|  |     |  +--Johann Conrad Kumpf 
|  |     +--Catherine Anna Maria Kumpf  (27 FEB 1711-14 DEC 1786)
|  |        +--Anna Maria Feuerbach 
+--Catherine Elizabeth Dressler  (20 APR 1798-8 AUG 1881)
   |  +--Frederick Hamman  (1740-1800)
   +--Susannah Hamman  (15 MAR 1773-31 JAN 1845)
      +--Mary Sara   (1744-)