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John Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ellis-County, Kansas
Our Model Tree links this John Jacobs across the 1920, 1930 and 1940 US Censuses in Ellis-County, Kansas (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 6-person household.
Age 69
b. ~1871
Male
Head
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ellis-County, Kansas |
| Surname | Jacobs |
| Given Name | John Peter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Wheatland Twp. |
| 1935 Residence (County) | Ellis |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Occupation | Farmer |
| Township / Ward | Wheatland Twp |
| Est. Birth Year | ~1871 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Anna Jacobs | Daughter | — | 18 | ~1922 |
| John Jacobs | Head | — | 69 | ~1871 |
| Raymond Jacobs | Son | — | 16 | ~1924 |
| Victor Jacobs | Son | — | 14 | ~1926 |
| Alfred Jacobs | Son | — | 12 | ~1928 |
| Albina Jacobs | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Ellis, Kansas
Head, age 49
Ellis, Kansas · implied b. ~1871 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Russia |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Russia |
| Year of Naturalization | 1891 |
| Birthplace (normalized) | russia |
1930
Ellis, Kansas
Head, age 59
Ellis, Kansas · implied b. ~1871 — 16 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1885 |
| Age at First Marriage | 27 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Ellis-County, Kansas
Head, age 69
Ellis-County, Kansas · implied b. ~1871 — 6 household members
| Surname | Jacobs |
| Given Name | John Peter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Wheatland Twp. |
| 1935 Residence (County) | Ellis |
| Naturalization Status | First papers filed |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 Jacobs 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 Jacobs
Head · 1940 · age 69 · b. ~1871 · Kansas
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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 — Ellis-County, Kansas
Open full size
1940 US Federal Census — Ellis-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01230-00955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Kern | 47 | Wife | — | Kansas |
| 2 | Andrew Hammerschmidt | 35 | Head | Farmer | Kansas |
| 3 | Clara Hammerschmidt | 31 | Wife | — | Kansas |
| 4 | Freda Hammerschmidt | 6 | Daughter | — | Kansas |
| 5 | Grace Hammerschmidt | 5 | Daughter | — | Kansas |
| 6 | Dolores Hammerschmidt | 3 | Daughter | — | Kansas |
| 7 | Darlene Ann Hammerschmidt | 2 | Daughter | — | Kansas |
| 8 | Janeta Mae Hammerschmidt | 0 | Daughter | — | Kansas |
| 9 | Martin A. Thil | 35 | Head | Farmer | Kansas |
| 10 | Mary Elizabeth Thil | 34 | Wife | — | Kansas |
| 11 | Vera Thil | 12 | Daughter | — | Kansas |
| 12 | Velma Thil | 10 | Daughter | — | Kansas |
| 13 | Rosaline Thil | 5 | Daughter | — | Kansas |
| 14 | Clare Jane Thil | 4 | Daughter | — | Kansas |
| 15 | George G. Jacobs | 65 | Head | Farmer | Russia |
| 16 | Elizabeth Jacobs | 58 | Wife | — | Russia |
| 17 | Isidore Jacobs | 26 | Son | Laborer | Kansas |
| 18 | Paul Jacobs | 18 | Son | Laborer | Kansas |
| 19 | Irene Jacobs | 16 | Daughter | Helper | Kansas |
| 20 | John Peter Jacobs THIS PERSON | 69 | Head | Farmer | Russia |
| 21 | Albina Margaret Jacobs | 56 | Wife | — | Russia |
| 22 | Anna Jacobs | 18 | Daughter | Helper | Kansas |
| 23 | Raymond Jacobs | 16 | Son | Laborer | Kansas |
| 24 | Victor Jacobs | 14 | Son | Laborer | Kansas |
| 25 | Alfred Jacobs | 12 | Son | — | Kansas |
| 26 | Joseph A. Hertl | 42 | Head | Farmer | Kansas |
| 27 | Rosa Hertl | 39 | Wife | — | Kansas |
| 28 | Elmer Hertl | 16 | Son | Laborer | Kansas |
| 29 | Elias Hertl | 15 | Son | Laborer | Kansas |
| 30 | Wilbert Hertl | 13 | Son | — | Kansas |
| 31 | Owen Hertl | 12 | Son | — | Kansas |
| 32 | Owen Hertl | 10 | Son | — | Kansas |
| 33 | Leo G. Hertl | 9 | Son | — | Kansas |
| 34 | Francis Hertl | 7 | Son | — | Kansas |
| 35 | Vera Hertl | 17 | Daughter | — | Kansas |
| 36 | Cecelia Hertl | 3 | Daughter | — | Kansas |
| 37 | Anna Mae Campbell | 73 | Head | — | Pennsylvania |
| 38 | Thomas Campbell | 54 | Son | Laborer | Kansas |
| 39 | Alfred Campbell | 40 | Son | Laborer | Kansas |
| 40 | Willie Campbell | 32 | Son | Laborer | Kansas |
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)