Jacob Dumpsey
- Born: Mar 1831, France
- Marriage: Mary B. Shafer circa 1867 in New York
- Died: After 1900, Hagar, Berrien Co., Michigan
 General Notes:
The 1880 Federal Census for Florence, Saint Joseph, Michigan , District 193 records Jacob (1831-Michigan/Germany/Germany) and Mary (1847-NY/Germany/Germany) Dumser with children John G. (1871-NY/Germany/NY), Catherine (1876-NY/Germany/NY), and Emma E. (1879-Michigan/NY/Germany/NY).
The 1900 Federal Census for Michigan, Berrien Co., Hagar Township, District 65, page 308B records Jacob Dumpsey (indexed as Dumbsey) [Dumser] (March 1831-France/France/Germany) and wife Mary B. (Nov 1847-NY/France/Germany) with sons John G. (Sept 1872-NY/France/NY) and George (Sept 1881-Michigan/France/NY) and daughter Mary M. (January 1886-Michigan/France/NY). Next door is daughter Emma E. Dumser Wood and her family (see notes on Emma's husband, Frederick Wood, for 1900 census facts). Jacob indicates his date of immigration as 1855. Jacob and Mary have been married 33 years with 8 children of which 4 are still living.
The 1910 Federal Census for Michigan, Berrien Co., Watervliet Township, District 97, page 273A taken April 28, 1910 records Mary Dumser (60-widow-mother-in-law) in the household of David (31-Michigan) Hickey and his wife Mary M. (24) [Dumser] Hickey and their new daughter Marie (1/12).
Jacob married Mary B. Shafer circa 1867 in New York. (Mary B. Shafer was born in Nov 1847 in New York, died on 9 Feb 1927 in Kalamazoo, Kalamazoo Co., Michigan and was buried in Calvary Cem., Benton Harbor, Berrien Co., Michigan.)
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