MM
Mary Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Milwaukee-County, Wisconsin
Our Model Tree links this Mary Mueller across the 1930 and 1940 US Censuses in Milwaukee-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Milwaukee-County, Wisconsin |
| Surname | Mueller |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | City of Milwaukee |
| 1935 Residence (County) | Milwaukee |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same home |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | City Of Milwaukee |
| Est. Birth Year | ~1927 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Richard Mueller | Son | — | 17 | ~1923 |
| Bertha Mueller | Spouse | — | 49 | ~1891 |
| Matthew Mueller | Head | — | 47 | ~1893 |
| Patty Mueller | Daughter | — | 12 | ~1928 |
| Mary Mueller | Daughter | — | 13 | ~1927 |
| Jacob Segrin | Other | — | 62 | ~1878 |
Census Appearances
1930
Milwaukee, Wisconsin
Daughter, age 3
Milwaukee, Wisconsin · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Milwaukee-County, Wisconsin
Daughter, age 13
Milwaukee-County, Wisconsin · implied b. ~1927 — 6 household members
| Surname | Mueller |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | City of Milwaukee |
| 1935 Residence (County) | Milwaukee |
| Highest Grade | 7 |
| 1935 Residence | Same home |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Mueller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mueller
Daughter · 1940 · age 13 · b. ~1927 · Wisconsin
★ You are viewing this record
Sibling
Patty Mueller
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mueller
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Milwaukee-County, Wisconsin
Open full size
1940 US Federal Census — Milwaukee-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04548-00564)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward C. Hanson | 56 | Head | Watchman | So. Dakota |
| 2 | Avis Hanson | 46 | Wife | — | Minnesota |
| 3 | Myrtle Hanson | 16 | Daughter | — | Wisconsin |
| 4 | James Hanson | 14 | Son | — | Wisconsin |
| 5 | Harry Hanson | 13 | Son | — | Wisconsin |
| 6 | Ruth Hanson | 11 | Daughter | — | Wisconsin |
| 7 | Dorothy Hanson | 10 | Daughter | — | Wisconsin |
| 8 | Matthew P. Mueller | 47 | Head | Alderman | Wisconsin |
| 9 | Bertha Mueller | 49 | Wife | — | Wisconsin |
| 10 | Richard Mueller | 17 | Son | — | Wisconsin |
| 11 | Mary Lou Mueller THIS PERSON | 13 | Daughter | — | Wisconsin |
| 12 | Patty Mueller | 12 | Daughter | — | Wisconsin |
| 13 | Jacob Segrin | 62 | Brother in law | Janitor | Wisconsin |
| 14 | Matthew Szczechowski | 54 | Head | Polisher | Wisconsin |
| 15 | Elizabeth Szczechowski | 46 | Wife | — | Illinois |
| 16 | Chester Szczechowski | 21 | Son | Newsworker | Wisconsin |
| 17 | Richard Szczechowski | 17 | Son | Newsworker | Wisconsin |
| 18 | Lucille Szczechowski | 14 | Daughter | — | Wisconsin |
| 19 | Dorothy Szczechowski | 7 | Daughter | — | Wisconsin |
| 20 | Ray Skrentny | 34 | Son in law | Hand Laborer | Wisconsin |
| 21 | G. Mary Skrentny | 26 | Daughter | — | Wisconsin |
| 22 | Jerome Skrentny | 1 | Grandson | — | Wisconsin |
| 23 | Edward Sr. Miller | 45 | Head | Janitor | Illinois |
| 24 | Catherine Miller | 45 | Wife | — | Wisconsin |
| 25 | Palmer Miller | 21 | Son | Shipping Clerk | Wisconsin |
| 26 | Catherine Miller | 14 | Daughter | — | Wisconsin |
| 27 | Martin Mierzwa | 70 | Head | — | Poland |
| 28 | Mary Mierzwa | 66 | Wife | — | Pennsylvania |
| 29 | Alex Sobczak | 33 | Head | Glove Boarder | Wisconsin |
| 30 | Esther Sobczak | 30 | Wife | — | Wisconsin |
| 31 | Dolores Sobczak | 11 | Daughter | — | Wisconsin |
| 32 | Ronald Sobczak | 3 | Son | — | Wisconsin |
| 33 | Nancy Sobczak | 0 | Daughter | — | Wisconsin |
| 34 | Valentine Makowski | 67 | Head | — | Poland |
| 35 | Theresa Makowski | 33 | Daughter | Twister | Wisconsin |
| 36 | Regina Makowski | 29 | Daughter | Seamstress | Wisconsin |
| 37 | Stella Makowski | 25 | Daughter | — | Wisconsin |
| 38 | Florence Makowski | 23 | Daughter | — | Wisconsin |
| 39 | Henry Budnik | 34 | Head | Laborer | Wisconsin |
| 40 | Phyllis Budnik | 29 | Wife | — | Wisconsin |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)