Birth Name: Jerome Martin Koosman
Place of Birth: Appleton, Minnesota, USA
Date of Birth: December 23, 1942
Ethnicity: German
Ancestry/Genealogy: Jerry Koosman is an American former professional baseball pitcher. Koosman was the son of Martin William Koosman and Lydia Louise Emilie Grease.
Koosman’s paternal grandfather was Johannes Ernest Koosman, the son of Johannes Heinrich Koosman and Catherine Elizabeth Sukohl. Koosman’s grandfather Johannes was born in Lower Saxony, Germany.
Koosman’s paternal grandmother was Bertha Emilie Beyer, the daughter of Wilheim Fredrick Beyer and Amelia Augusta Ida Boese. Bertha was born in Minnesota and her parents were born in Germany.
Koosman’s maternal grandfather was Johannes Ferdinand Wilhelm Graese, the son of Wilhelm Friedrich August Grease and Wilhelmine Christine Kroening. Johannes was born in Wisconsin to German parents.
Koosman’s maternal grandmother was Anna Wilhemine Augusta Hill, the daughter of Casper Frederick Hill Sr. and Emilie Marie August Koepsell. Anna was born in Wisconsin to German parents.
Source: https://www.findagrave.com/memorial/115440015 (Jerry Koosman’s fathers obituary)
https://www.findagrave.com/memorial/115440014/lydia-louise_emilie-koosmann (Jerry Koosman’s mothers obituary)
https://sabr.org/bioproj/person/jerry-koosman/
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