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John Jennings — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marquette-County, Michigan
Our Model Tree links this John Jennings across the 1920, 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 3-person household.
Age 79
b. ~1861
Male
Head
Born: Michigan
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Marquette-County, Michigan |
| Surname | Jennings |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Negaunee city |
| 1935 Residence (County) | Marquette |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road work |
| Class of Worker | GW |
| Income (1939) | 430 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Laborer |
| Township / Ward | Negaunee City |
| Est. Birth Year | ~1861 |
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 |
|---|---|---|---|---|
| Beatrice Jennings | Daughter | — | 45 | ~1895 |
| Myrtle Jennings | Daughter | — | 48 | ~1892 |
| John Jennings | Head | — | 79 | ~1861 |
Census Appearances
1920
Marquette, Michigan
Head, age 58
Marquette, Michigan · implied b. ~1862 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Miner |
| Industry | Iron mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Marquette, Michigan
Head, age 68
Marquette, Michigan · implied b. ~1862 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Laborer |
| Industry | City |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Marquette-County, Michigan
Head, age 79
Marquette-County, Michigan · implied b. ~1861 — 3 household members
| Surname | Jennings |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Negaunee city |
| 1935 Residence (County) | Marquette |
| Occupation | Laborer |
| Industry | Road work |
| Class of Worker | GW |
| Income (1939) | 430 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Jennings 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 Jennings
Head · 1940 · age 79 · b. ~1861 · Michigan
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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 — Marquette-County, Michigan
Open full size
1940 US Federal Census — Marquette-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01787-00266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Luisa, Dina Turia | 11 | Daughter | — | Michigan |
| 2 | Albert Bacco | 45 | Head | Miner | Italy |
| 3 | Mary Bacco | 44 | Wife | — | Italy |
| 4 | Sergio Bacco | 15 | Son | — | Michigan |
| 5 | Doris Bacco | 7 | Daughter | — | Michigan |
| 6 | Edward Prideaux | 52 | Head | Mechanic | Michigan |
| 7 | Mabel Prideaux | 53 | Wife | — | Michigan |
| 8 | George E. Prideaux | 19 | Son | Laborer | Michigan |
| 9 | Margaret E. Prideaux | 14 | Daughter | — | Michigan |
| 11 | Anna Junneri | 63 | Head | — | Finland |
| 12 | Annie Junneri | 32 | Daughter | Maid | Finland |
| 13 | John H. Hocking | 76 | Head | Laborer | England |
| 14 | Arthur Hocking | 46 | Head | Sampler | Michigan |
| 15 | Antoinette Hocking | 41 | Wife | — | Michigan |
| 16 | Dorothy J. Hocking | 20 | Daughter | Kitchen Maid | Michigan |
| 17 | Percy Penhale | 65 | Head | Carpenter | England |
| 18 | Molly A. Penhale | 66 | Wife | — | England |
| 19 | Richard Doty | 27 | Head | Keeper | Michigan |
| 20 | Thelma Doty | 25 | Wife | Laborer | Michigan |
| 21 | Ima S. Carlson | 59 | Head | — | Michigan |
| 22 | Oscar W. Carlson | 32 | Son | Laborer | Michigan |
| 23 | Thomas R. Carlson | 26 | Son | Laborer | Michigan |
| 24 | John C. Carlson | 24 | Son | Miner | Michigan |
| 25 | Victor J. Carlson | 22 | Son | Laborer | Michigan |
| 26 | John E. Jennings THIS PERSON | 79 | Head | Laborer | Michigan |
| 27 | Myrtle E. Jennings | 48 | Daughter | — | Michigan |
| 28 | Beatrice A. Jennings | 45 | Daughter | Teacher | Michigan |
| 29 | Frank H. Koski | 59 | Head | — | Finland |
| 30 | Ella Koski | 53 | Wife | — | Finland |
| 31 | Paul L. Koski | 19 | Son | Laborer | Michigan |
| 32 | Carl W. Koski | 17 | Son | Laborer | Michigan |
| 33 | John D. Koski | 76 | Head | Truck Driver | Finland |
| 34 | Agnes Koski | 71 | Wife | — | Michigan |
| 35 | Leonard Koski | 41 | Brother | Laborer | Wisconsin |
| 36 | Louis G. Koski | 31 | Brother | — | Michigan |
| 37 | John V. Marsala | 34 | Head | Laborer | Michigan |
| 38 | Bernard Anderson | 46 | Head | Fireman | Michigan |
| 39 | Ida E. Anderson | 44 | Wife | — | Michigan |
| 40 | Edwin S. Anderson | 39 | Brother | Laborer | Michigan |
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)