Our Theisen & Allied Surname Family History
Theisen, Margaret[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
1878 - 1964 (86 years)-
Name Theisen, Margaret Nickname Maggie Birth 7 Feb 1878 New Franken, Brown County, Wisconsin, United States 
[11] Gender Female Death 12 Jun 1964 Person ID I817 Theisen & Allied Families Last Modified 9 Sep 2025
Father Theisen, John Joseph, b. 9 May 1850, Detroit, Wayne County, Michigan, United States d. 14 Feb 1905, New Franken, Brown County, Wisconsin, United States (Age 54 years) Mother Blonde, Mary E, b. 27 Jun 1854, Montreal, Ile De Montreal, Quebec d. 4 Jul 1906, New Franken, Brown County, Wisconsin, United States (Age 52 years) Marriage 22 Feb 1876 New Franken, Brown County, Wisconsin, United States [11] - Spouse: John Theisen
Family ID F217 Group Sheet | Family Chart
Family Pfeifer, Martin Alouis, b. 22 Oct 1875, Brown, Wisconsin, United States d. 30 Jun 1952 (Age 76 years) Marriage 3 Jul 1919 Cudahy, Milwaukee, Wisconsin, United States Children 1. Pfeifer, Rita, b. 23 Nov 1922, New Franken, Brown County, Wisconsin, United States d. 14 Aug 1925 (Age 2 years)2. Pfeifer d. Yes, date unknown 3. Pfeifer d. Yes, date unknown Family ID F636 Group Sheet | Family Chart Last Modified 20 Mar 2026
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Sources - [S3] Geni World Family Tree, https://www.myheritage.com/research/record-40000-211712488/margaret-pfeifer-born-theisen-in-geni-world-family-tree.
Margaret Pfeifer (born Theisen)
Gender: Female
Birth: Feb 8 1878
Death: June 12 1964
Father: <a>John Theisen</a>
Mother: <a>Eva Maria Theisen (born Blondy)</a>
Husband: <a>Martin Pfeifer</a>
Siblings: <a>Elisabeth Miench (born Theisen)</a>, <a>Anna Heim (born Theisen)</a>, <a>Killian Theisen</a>, <a>Frank Theisen</a>, <a>Michael Theisen</a>, <a>Catherine Clara Moeller (born Theisen)</a>, <a>Otillia Ripp (born Theisen)</a>, <a>Magdelena Schott (born Theisen)</a>, <a>Joseph Theisen</a>, <a>Peter Theisen</a>, <a>Mary Theisen</a> - [S250] 1900 United States Federal Census, https://www.myheritage.com/research/record-10131-126585611/maggie-theisen-in-1900-united-states-federal-census.
Maggie Theisen
Gender: Female
Birth: Feb 1879 - Wisconsin, United States
Residence: 1900 - Humboldt town, Brown, Wisconsin, USA
Age: 21
Marital status: Single
Immigration: 1866
Race: White
Ethnicity: American
Father: John Theisen
Mother: Mary E Theisen
Siblings: Kate Theisen, Mike Theisen, Tillie Theisen, Lenna Theisen, Joseph Theisen
Census: Township:Humboldt townEnum. District:26Family:149 County:BrownSeries:T623Line:3 State:WisconsinRoll:1241778Image:1034 Date:1900-00-00Sheet:10 See household members
Household
Relation to head; Name; Age; Suggested alternatives
Head; John Theisen; 50;
Wife; Mary E Theisen; 46;
Daughter; Maggie Theisen; 21;
Daughter; Kate Theisen; 18;
Son; Mike Theisen; 16;
Daughter; Tillie Theisen; 15;
Daughter; Lenna Theisen; 13;
Son; Joseph Theisen; 11; - [S1] FamilySearch Family Tree, https://www.myheritage.com/research/record-40001-601805765/margaret-pfeifer-born-theisen-in-familysearch-family-tree.
Margaret Pfeifer (born Theisen)
Gender: Female
Birth: 1878 - New Franken,Brown,Wisconsin
Marriage: July 3 1919 - Cudahy,Milwaukee,Wisconsin
Death: June 12 1964
Parents: <a>John Joseph Theisen</a>, <a>Eva Maria Theisen (born Blonde)</a>
Husband: <a>Martin Pfeifer</a>
Siblings: <a>Killian Theisen</a>, <a>Joseph B. Theisen</a>, <a>Mary Theisen</a>, <a>Peter Theisen</a>, <a>Elisabeth Miench (born Theisen)</a>, <a>Anna Heim (born Theisen)</a>, <a>Ottillia Theisen</a>, <a>Catherine Clara Moeller (born Theisen)</a>, <a>Michael Theisen</a>, <a>Lena Theisen</a>, <a>Franciscus Theisen</a>, <a>Tillie Theisen</a>, <a>Mike Theisen</a> - [S250] 1900 United States Federal Census, https://www.myheritage.com/research/record-10131-126585611/maggie-theisen-in-1900-united-states-federal-census.
Maggie Theisen
Gender: Female
Birth: Feb 1879 - Wisconsin, United States
Residence: 1900 - Humboldt town, Brown, Wisconsin, USA
Age: 21
Marital status: Single
Immigration: 1866
Race: White
Ethnicity: American
Father: John Theisen
Mother: Mary E Theisen
Siblings: Kate Theisen, Mike Theisen, Tillie Theisen, Lenna Theisen, Joseph Theisen
Census: - [S3] Geni World Family Tree, https://www.myheritage.com/research/record-40000-211712488/margaret-pfeifer-born-theisen-in-geni-world-family-tree.
Margaret Pfeifer (born Theisen)
Gender: Female
Birth: Feb 8 1878
Death: June 12 1964
Father: <a>John Theisen</a>
Mother: <a>Eva Maria Theisen (born Blondy)</a>
Husband: <a>Martin Pfeifer</a>
Siblings: <a>Elisabeth Miench (born Theisen)</a>, <a>Anna Heim (born Theisen)</a>, <a>Frank Theisen</a>, <a>Catherine Clara Moeller (born Theisen)</a>, <a>Michael Theisen</a>, <a>Otillia Ripp (born Theisen)</a>, <a>Magdelena Schott (born Theisen)</a>, <a>Joseph Theisen</a>, <a>Killian Theisen</a>, <a>Peter Theisen</a>, <a>Mary Theisen</a> - [S1] FamilySearch Family Tree, https://www.myheritage.com/research/record-40001-601805765/margaret-pfeifer-born-theisen-in-familysearch-family-tree.
Margaret Pfeifer (born Theisen)<br>Gender: Female<br>Birth: 1878 - New Franken,Brown,Wisconsin<br>Marriage: July 3 1919 - Cudahy,Milwaukee,Wisconsin<br>Death: June 12 1964<br>Parents: <a>John Joseph Theisen</a>, <a>Eva Maria Theisen (born Blonde)</a><br>Husband: <a>Martin Pfeifer</a><br>Siblings: <a>Elisabeth Miench (born Theisen)</a>, <a>Anna Heim (born Theisen)</a>, <a>Franciscus Theisen</a>, <a>Catherine Clara Moeller (born Theisen)</a>, <a>Michael Theisen</a>, <a>Mike Theisen</a>, <a>Ottillia Ripp (born Theisen)</a>, <a>Tillie Theisen</a>, <a>Magdalene "Lena" Schott (born Theisen)</a>, <a>Killian Theisen</a>, <a>Joseph B. Theisen</a>, <a>Mary Theisen</a>, <a>Peter Theisen</a> - [S1] FamilySearch Family Tree.
Margaret Pfeifer (born Theisen)<br>Gender: Female<br>Birth: Feb 7 1878 - New Franken,Brown,Wisconsin<br>Marriage: July 3 1919 - Cudahy, Milwaukee, Wisconsin, United States<br>Residence: 1920 - Milwaukee, Milwaukee, Wisconsin, United States<br>Residence: 1930 - Cudahy, Milwaukee, Wisconsin, United States<br>Residence: 1935 - Same House<br>Residence: 1940 - Cudahy, Milwaukee, Wisconsin, United States<br>Death: June 12 1964<br>There seems to be an issue with this person's relatives. View this person on FamilySearch to see this information. - [S8] 1930 United States Federal Census.
Margaret Pfeifer<br>Gender: Female<br>Birth: Circa 1878 - Wisconsin, United States<br>Residence: 1930 - Cudahy, Milwaukee, Wisconsin, USA<br>Age: 52<br>Marital status: Married<br>Race: White<br>Language: English<br>Father's birth place: Michigan, United States<br>Mother's birth place: Canada<br>Husband: Martin Pfeifer<br>Son: Edward Pfeifer<br>Census: - [S5] 1940 United States Federal Census.
Margaret Pfeifer<br>Gender: Female<br>Birth: Circa 1878 - Wisconsin, USA<br>Residence: 1940 - 4563 Packard Avenue, Cudahy, Milwaukee, Wisconsin, USA<br>Age: 62<br>Residence in 1935: Same House - 4563 Packard Avenue, Cudahy, Milwaukee, Wisconsin, USA<br>Race: White<br>Marital status: Married<br>Husband: Martin J Pfeifer<br>Son: Edward M Pfeifer<br>Census: - [S3] Geni World Family Tree.
Margaret Pfeifer (born Theisen)<br>Gender: Female<br>Birth: Feb 8 1878<br>Death: June 12 1964<br>Father: <a>John Theisen</a><br>Mother: <a>Eva Maria Theisen (born Blondy)</a><br>Husband: <a>Martin Pfeifer</a><br>Siblings: <a>Elisabeth Miench (born Theisen)</a>, <a>Anna Heim (born Theisen)</a>, <a>Frank Theisen</a>, <a>Catherine Clara Moeller (born Theisen)</a>, <a>Michael Theisen</a>, <a>Otillia Ripp (born Theisen)</a>, <a>Magdelena Schott (born Theisen)</a>, <a>Joseph Theisen</a>, <a>Killian Theisen</a>, <a>Peter Theisen</a>, <a>Mary Theisen</a> - [S667] Will and Probate Records, https://www.familysearch.org/ark:/61903/3:1:3QHV-N383-Z9HL-R.
- [S3] Geni World Family Tree, https://www.myheritage.com/research/record-40000-211712488/margaret-pfeifer-born-theisen-in-geni-world-family-tree.