MJ
Mary Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sevier-County, Utah
Our Model Tree links this Mary Jensen across the 1930 and 1940 US Censuses in Sevier-County, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 8-person household.
Age 50
b. ~1890
Female
Spouse
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sevier-County, Utah |
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Richfield City |
| 1935 Residence (County) | Sevier |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Richfield City |
| Est. Birth Year | ~1890 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jensen | Daughter | — | 17 | ~1923 |
| Marie Jensen | Daughter | — | 14 | ~1926 |
| Oliver Jensen | Head | — | 51 | ~1889 |
| Ray Jensen | Son | — | 25 | ~1915 |
| Iro Jensen | Son | — | 21 | ~1919 |
| Robert Jensen | Son | — | 23 | ~1917 |
| Paul Jensen | Son | — | 19 | ~1921 |
| Mary Jensen | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Sevier, Utah
Other, age 37
Sevier, Utah · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 17 |
| Father's Birthplace | England |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Sevier-County, Utah
Spouse, age 50
Sevier-County, Utah · implied b. ~1890 — 8 household members
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Richfield City |
| 1935 Residence (County) | Sevier |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 50 · b. ~1890 · Utah
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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 — Sevier-County, Utah
Open full size
1940 US Federal Census — Sevier-County, Utah
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-04217-00926)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Shirley Oral Miles | 16 | Daughter | — | Utah |
| 2 | Marilyn Clea Miles | 12 | Daughter | — | Utah |
| 4 | Joseph Ogden | 80 | Head | Farmer | England |
| 5 | Johanna Marie Ogden | 74 | Wife | — | Utah |
| 6 | Dan Muir Ogden | 26 | Head | Farmer | Utah |
| 7 | Elsa Ogden | 24 | Wife | — | Utah |
| 8 | Dan Blake Ogden | 5 | Son | — | Utah |
| 9 | Norman Black Ogden | 1 | Son | — | Utah |
| 10 | Thelma Matilda Mckean | 35 | Head | Editor | Utah |
| 11 | Margaret Emily Mckean | 46 | Sister | — | Utah |
| 12 | Lucille Emily Mckean | 21 | Niece | — | Utah |
| 13 | Robert Melvyn Mckean | 3 | Son | — | Utah |
| 14 | Anna Baker | 68 | Head | — | Utah |
| 15 | Richard J. Baker | 28 | Son | Mechanic | Utah |
| 16 | Minnie Baker | 27 | Daughter-in-law | — | Idaho |
| 17 | Jacqueline Baker | 4 | Granddaughter | — | Nevada |
| 18 | Ammon Deloy Nielson | 25 | Head | Laborer | Utah |
| 19 | Hella Nielson | 26 | Wife | — | Utah |
| 20 | Infant Nielson | 0 | Daughter | — | Utah |
| 21 | Archibald H. Young | 63 | Head | Caretaker | Utah |
| 22 | Valinda Young | 60 | Wife | — | Utah |
| 23 | Parley Young | 25 | Son | — | Utah |
| 25 | Alice Rosalie Russ | 57 | Head | — | Utah |
| 26 | Glen Lyman Russ | 21 | Son | New Worker | Idaho |
| 27 | Robert Jay Sevier Russ | 25 | Grandson | Laborer | Utah |
| 28 | Zella Russ | 19 | Daughter-in-law | — | Utah |
| 29 | Ventrice Russ | 1 | Granddaughter | — | Utah |
| 30 | Oliver Christian Jensen | 51 | Head | Salesman | Utah |
| 31 | Mary Jensen THIS PERSON | 50 | Wife | — | Utah |
| 32 | Ray Jensen | 25 | Son | — | Utah |
| 33 | Robert Rollo Jensen | 23 | Son | Assistant Teacher | Utah |
| 34 | Iro B. Jensen | 21 | Son | Night Clerk | Utah |
| 35 | Paul C. Jensen | 19 | Son | — | Utah |
| 36 | Mary Dean Jensen | 17 | Daughter | — | Utah |
| 37 | Marie Shayne Jensen | 14 | Daughter | — | Utah |
| 38 | Christian Bertelson | 72 | Head | — | Utah |
| 39 | Jennie Bertelson | 55 | Wife | — | Denmark |
| 40 | Leland Henry Bertelson | 25 | Son | New Worker | Utah |
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)