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Male Joannis Weiler Click to view Joannis Weiler in the family tree

Joannis was born on January 13th, 1810 in Bensheim, Hesse-Darmstadt, Germany.1   Joannis' father was Francis Philipp Muhlum and his mother was Margretha Weiler.  His paternal grandparents were Philipp Muhlum and Elisabeth Kappes; his maternal grandparents were Philipp Weiler and Anna Maria Leiss. He had a brother named Francis.  He was the older of the two children. He had two half-brothers named Joannes and Joannes.1 

1 basel.FTW
Further source/citation:
World Family Tree Vol. 9, Ed. 1 @ Tree #2571