Minnie Schulze 

*Oct 1, 1888 - †Apr 23, 1957


a) Sponsors: Heinrich Oelbaum, Minna Barkemeyer
The source for her deathdate (at ancestry.com) gives her name as
Mamie; as does her marriage certificate

Can only guess that her middle name was Emma? No other explanation for the following census except ennumerator error.

1940 Census
San Diego Judicial Township, San Diego City, San Diego Co, CA
4640 #310 DORIA
owns home, valued at 4200
Emma, head, female, white 49, married (crossed through in pencil with a number 7 written there), highest grade completed: H4, born Missouri, resided "same place" as on 4-1-1935, not on a farm;
Ruth, daughter, female, white, 16, single, attended school, education: H3, born Missouri;
Alma, daughter, female, white, 28, single, education: H4, born Missouri

Jefferson City Post-Tribune
Jefferson City, MO
16 Mar 1949, p10
Mrs. Mina Doria, San Diego, Calif., is visiting her sister, Mrs. Adolf Niemeyer, Tanner Bridge road. Mr. and Mrs. Niemeyer and Mrs. Doria drove to St. Louis to visit Mr. and Mrs. Joseph Doria. Mrs. Doria expects to return to California in April.