MJ
Mary Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Racine-County, Wisconsin
Our Model Tree links this Mary Jensen across the 1930 and 1940 US Censuses in Racine-County, Wisconsin (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 10-person household.
Age 47
b. ~1893
Female
Spouse
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Racine-County, Wisconsin |
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | RACINE CITY |
| 1935 Residence (County) | RACINE |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Racine City |
| Est. Birth Year | ~1893 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Priscilla Jensen | Daughter | — | 19 | ~1921 |
| Nancy Jensen | Daughter | — | 14 | ~1926 |
| Jane Jensen | Daughter | — | 12 | ~1928 |
| Lois Jensen | Daughter | — | 10 | ~1930 |
| James Jensen | Head | — | 47 | ~1893 |
| Roger Jensen | Son | — | 23 | ~1917 |
| Wallace Jensen | Son | — | 18 | ~1922 |
| Walter Jensen | Son | — | 18 | ~1922 |
| Ralph Jensen | Son | — | 16 | ~1924 |
| Mary Jensen | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Racine, Wisconsin
Spouse, age 37
Racine, Wisconsin · implied b. ~1893 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 19 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Racine-County, Wisconsin
Spouse, age 47
Racine-County, Wisconsin · implied b. ~1893 — 10 household members
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | RACINE CITY |
| 1935 Residence (County) | RACINE |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Jensen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jensen
Spouse · 1940 · age 47 · b. ~1893 · Wisconsin
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Racine-County, Wisconsin
Open full size
1940 US Federal Census — Racine-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04517-00363)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Amanda Dederich | 51 | Head | — | Wisconsin |
| 2 | Virginia Dederich | 24 | Daughter | Switch Board Operator | Wisconsin |
| 3 | Viola Dederich | 21 | Daughter | Book Keeper | Wisconsin |
| 4 | Dolores Dederich | 19 | Daughter | New Worker | Wisconsin |
| 5 | Leona Dederich | 17 | Daughter | New Worker | Wisconsin |
| 6 | Franklin Dederich | 16 | Son | — | Wisconsin |
| 7 | Marjorie Dederich | 15 | Daughter | — | Wisconsin |
| 8 | Henry Briske | 42 | Brother | Laborer | Wisconsin |
| 9 | Richard H. Lohmann | 35 | Head | Foreman | Illinois |
| 10 | Louise Lohmann | 33 | Wife | — | Illinois |
| 11 | Paul Lohmann | 8 | Son | — | Wisconsin |
| 12 | Herman H. Schroeder | 80 | Father in Law | — | Germany |
| 13 | Anna Schroeder | 74 | Mother in Law | — | Germany |
| 14 | Walter H. Brown | 38 | Head | Milk Man | Wisconsin |
| 15 | Norma Brown | 34 | Wife | — | Wisconsin |
| 16 | Walter Brown | 13 | Son | — | Wisconsin |
| 17 | James Brown | 8 | Son | — | Wisconsin |
| 18 | Charles F. Anders | 60 | Head | Foreman | Austria |
| 19 | Alice Anders | 58 | Wife | — | England |
| 20 | James C. Jensen | 47 | Head | Draftsman | Denmark |
| 21 | Mary Jensen THIS PERSON | 47 | Wife | — | Wisconsin |
| 22 | Roger Jensen | 23 | Son | Office Clerk | Wisconsin |
| 23 | Priscilla Jensen | 19 | Daughter | Laborer | Wisconsin |
| 24 | Walter Jensen | 18 | Son | — | Wisconsin |
| 25 | Wallace Jensen | 18 | Son | — | Wisconsin |
| 26 | Ralph Jensen | 16 | Son | — | Wisconsin |
| 27 | Nancy Jensen | 14 | Daughter | — | Wisconsin |
| 28 | Jane Jensen | 12 | Daughter | — | Wisconsin |
| 29 | Lois Jensen | 10 | Daughter | — | Wisconsin |
| 30 | Frank C. Musiel | 51 | Head | Carpenter Foreman | Wisconsin |
| 31 | Cora Musiel | 49 | Wife | — | Illinois |
| 32 | Jens M. Hansen | 59 | Head | Pattern Maker | Norway |
| 33 | Cecila Hansen | 59 | Wife | — | Norway |
| 34 | Roy Mortensen | 24 | Head | Meat Cutter | Wisconsin |
| 35 | Gladys Mortensen | 25 | Wife | Elevator Operator | Wisconsin |
| 36 | Stanley Christensen | 32 | Head | Estimator Cost Dept. | Wisconsin |
| 37 | Ella Christensen | 29 | Wife | — | Wisconsin |
| 38 | Harry E. Baker | 40 | Head | Machinist | Wisconsin |
| 39 | Rose Baker | 32 | Wife | — | Wisconsin |
| 40 | Veryl Baker | 12 | Daughter | — | 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)