1. | William Koch was born Abt 1857, Milwaukee, Wisconsin; died 3 Feb 1916, Milwaukee, Wisconsin, USA. Other Events:
- Residence: 1900, Milwaukee Ward 10, Milwaukee, Wisconsin, USA; Marital Status: Married; Relation to Head of House: Head
- Residence: 1910, Milwaukee Ward 10, Milwaukee, Wisconsin, USA; Marital Status: Married; Relation to Head of House: Head
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