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John Jacobs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this John Jacobs across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents Sidney & Emma — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Sycamore Twp |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Truck driver |
| Industry | R. Mail Market |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Truck Driver |
| Township / Ward | Sycamore Twp |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Sidney Jacobs | Head | — | 68 | ~1872 |
| John Jacobs | Son | — | 28 | ~1912 |
| James Jacobs | Son | — | 13 | ~1927 |
| Emma Jacobs | Spouse | — | 65 | ~1875 |
Census Appearances
1920
Hamilton, Ohio
Son, age 7
Hamilton, Ohio · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Hamilton, Ohio
Son, age 17
Hamilton, Ohio · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Apprentice |
| Industry | Pattern Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Son, age 28
Hamilton-County, Ohio · implied b. ~1912 — 4 household members
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Sycamore Twp |
| 1935 Residence (County) | Hamilton |
| Occupation | Truck driver |
| Industry | R. Mail Market |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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. Identified parents: father Sidney Jacobs (~0.92 confidence) and mother Emma Jacobs (~0.92 confidence) and father John Jacobs (~0.92 confidence) and father William Nienaber (~0.92 confidence) and mother Pink Jacobs (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Sidney Jacobs
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Emma Jacobs
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
John Jacobs
b. ~1881
Source father
● Household
· direct · ~0.92
Father
William Nienaber
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Pink Jacobs
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jacobs
Son · 1940 · age 28 · b. ~1912 · Ohio
★ You are viewing this record
Sibling
James Jacobs
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03080-00740)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edgar Tice | 47 | Son | Laborer | Ohio |
| 2 | Robert O Tice | 34 | Head | Supply Man | Ohio |
| 3 | Evelyn Tice | 27 | Wife | — | Ohio |
| 4 | Thomas Tice | 5 | Son | — | Ohio |
| 5 | William Tice | 1 | Son | — | Ohio |
| 6 | Earl S Quinnit | 33 | Head | Laborer | Ohio |
| 7 | Margaret A Quinnit | 29 | Wife | — | Ohio |
| 8 | Mary Lou Quinnit | 9 | Daughter | — | Ohio |
| 9 | Michael Quinnit | 3 | Son | — | Ohio |
| 10 | Elmer Lewis | 31 | Head | Floor Sander | Ohio |
| 11 | Dorothy Lewis | 25 | Wife | — | Ohio |
| 12 | Geraldine Lewis | 1 | Daughter | — | Ohio |
| 13 | Martin V Tice | 66 | Head | Auto Repair | Indiana |
| 14 | Ella E Tice | 67 | Wife | — | Ohio |
| 15 | Alice Tice | 27 | Daughter | Packer | Ohio |
| 16 | Ruth Tice | 15 | Daughter | — | Ohio |
| 17 | William P Barnes | 52 | Head | Switchman | Ohio |
| 18 | Lida Barnes | 44 | Wife | — | Kentucky |
| 19 | Marilyn L Barnes | 10 | Adp daughter | — | Ohio |
| 20 | Le Ray E Sr Jones | 23 | Nephew | Farmer | Ohio |
| 21 | Violet E Jones | 20 | Niece | Cigar Maker | Georgia |
| 22 | Le Ray E Jr Jones | 1 | Gr Nephew | — | Florida |
| 23 | Sidney Jacobs | 68 | Head | Wrapper | Ohio |
| 24 | Emma Jacobs | 65 | Wife | — | Ohio |
| 25 | John Jacobs THIS PERSON | 28 | Son | Truck Driver | Ohio |
| 26 | James Jacobs | 13 | Son | — | Ohio |
| 27 | Albert Ruschek | 61 | Head | Farmer | Germany |
| 28 | Josephine Ruschek | 57 | Wife | — | Ohio |
| 29 | Albert Ruschek | 23 | Son | Farm Helper | Ohio |
| 30 | Joseph Ruschek | 19 | Son | Farm Helper | Ohio |
| 31 | Bernard Ruschek | 17 | Son | Farm Helper | District of Ohio |
| 32 | Edward L Hadley | 38 | Head | Wash Man | Kentucky |
| 33 | Edna Hadley | 31 | Wife | — | Kentucky |
| 34 | Edward Hadley | 15 | Son | — | Kentucky |
| 35 | Harold Hadley | 13 | Son | — | Kentucky |
| 36 | Gilbert Hadley | 11 | Son | — | Ohio |
| 37 | Shirley Hadley | 5 | Daughter | — | Ohio |
| 38 | Richard Hadley | 4 | Son | — | Ohio |
| 39 | Lawrence Young | 26 | Boarder | Fireman | Kentucky |
| 40 | Norma Lee Young | 18 | Sister | — | Kentucky |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)