+--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-)
Josiah S. Lahr  (29 NOV 1845-8 FEB 1900)
|        +--Johann Martin Schaffer  (30 AUG 1724-1809)
|     +--Valentine Schaffer  (31 DEC 1765-1 DEC 1852)
|     |  +--Elisabeth Catherine Lautenschlager  (27 JAN 1729-7 OCT 1809)
|  +--Peter Schaffer  (15 DEC 1796-13 JAN 1850)
|  |  +--Catherine Staub  (MAR 1767-1842)
+--Susanna Shaffer  (13 APR 1824-24 JUL 1899)
   |  +--Michael Braun  (16 FEB 1772-9 MAY 1851)
   +--Maria Magdalena Braun  (19 JAN 1798-21 MAY 1864)
      +--Catharina Scherry  (30 MAR 1770-18 FEB 1844)