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John Spencer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duchesne-County, Utah
Our Model Tree links this John Spencer across the 1920, 1930 and 1940 US Censuses in Duchesne-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 3-person household.
Age 53
b. ~1887
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duchesne-County, Utah |
| Surname | Spencer |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Ioka Precinct |
| 1935 Residence (County) | Duchesne |
| Additional Details | |
| Occupation | Feeding |
| Industry | Cattle industry |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same house |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Feeding |
| Township / Ward | Ioka Precinct |
| Est. Birth Year | ~1887 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ada Spencer | Daughter | — | 13 | ~1927 |
| John Spencer | Head | — | 53 | ~1887 |
| Marie Spencer | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Duchesne, Utah
Head, age 33
Duchesne, Utah · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Vermont |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Duchesne, Utah
Head, age 43
Duchesne, Utah · implied b. ~1887 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 22 |
| Father's Birthplace | England |
| Mother's Birthplace | Utah |
| Occupation | Farmer |
| Industry | general |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 300 |
| Veteran | No |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Duchesne-County, Utah
Head, age 53
Duchesne-County, Utah · implied b. ~1887 — 3 household members
| Surname | Spencer |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Ioka Precinct |
| 1935 Residence (County) | Duchesne |
| Occupation | Feeding |
| Industry | Cattle industry |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H-3 |
| 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 John Spencer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Spencer
Head · 1940 · age 53 · b. ~1887 · 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 — Duchesne-County, Utah
Open full size
1940 US Federal Census — Duchesne-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04212-00735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert C. Marchant | 59 | Head | General Farm Work | Utah |
| 2 | Agnes J. Marchant | 58 | Wife | — | Utah |
| 3 | David M. Wilkinson | 33 | Son-in-law | Driver Of Truck | Utah |
| 4 | Emily T. Wilkinson | 25 | Daughter | — | Utah |
| 5 | Leslie David Wilkinson | 4 | Grandson | — | Utah |
| 6 | John D. Spencer THIS PERSON | 53 | Head | Feeding | Utah |
| 7 | Marie A. Spencer | 51 | Wife | — | Sweden |
| 8 | Ada Spencer | 13 | Daughter | — | Utah |
| 9 | Helen O. Johnson | 29 | Head | — | Utah |
| 10 | E. Craig Johnson | 9 | Son | — | Utah |
| 11 | Arnell Johnson | 8 | Son | — | Utah |
| 12 | Clifford Johnson | 4 | Son | — | Utah |
| 13 | Emil O. Anderson | 62 | Head | Building Canal | Finland |
| 14 | Linea Anderson | 60 | Wife | — | Sweden |
| 15 | Le Roy Anderson | 25 | Son | Farmer | Utah |
| 16 | Dewey G. Anderson | 19 | Son | Laborer | Utah |
| 17 | Harold I. Anderson | 15 | Son | — | Utah |
| 18 | James O. Ames | 47 | Head | General Farming | Utah |
| 19 | Luella Ames | 39 | Wife | — | Utah |
| 20 | J. Wayne Ames | 18 | Son | Hired Hand | Utah |
| 21 | Vern C. Ames | 17 | Son | General Farming | Utah |
| 22 | F. Eddie Ames | 14 | Son | — | Utah |
| 23 | Luella Ames | 12 | Daughter | — | Utah |
| 24 | Kay Ames | 9 | Daughter | — | Utah |
| 25 | Don E. Ames | 6 | Son | — | Utah |
| 26 | Eva M. Ames | 4 | Daughter | — | Utah |
| 27 | George D. Ames | 2 | Son | — | Utah |
| 28 | Archie P. Benson | 47 | Head | — | Utah |
| 29 | R. Marie Benson | 40 | Wife | — | Utah |
| 30 | A. Claire Benson | 19 | Son | Farmer | Utah |
| 31 | Theron L. Benson | 17 | Son | — | Utah |
| 32 | Loren G. Benson | 15 | Son | — | Utah |
| 33 | Jeanette E. Benson | 11 | Son | — | Utah |
| 34 | Maurice E. Benson | 10 | Son | — | Utah |
| 35 | Hillis Lowry | 24 | Head | Gasoline Engine | Nebraska |
| 36 | Ruth J. Lowry | 23 | Wife | — | Utah |
| 37 | Hattie C. Lowry | 1 | Son | — | Utah |
| 38 | Jeanette J. Lowry | 0 | Daughter | — | Utah |
| 39 | Peter C. Johnson | 54 | Head | Farmer | Utah |
| 40 | A. Geneva Johnson | 54 | Wife | — | 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)