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John Jacobs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Athens-County, Ohio
Our Model Tree links this John Jacobs across the 1920, 1930 and 1940 US Censuses in Athens-County, Ohio (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Athens-County, Ohio |
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | York Township |
| 1935 Residence (County) | Athens |
| Additional Details | |
| Occupation | miner |
| Industry | coal mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 758 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Miner |
| Township / Ward | York Township |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Tressa Jacobs | Daughter | — | 12 | ~1928 |
| William Jacobs | Head | — | 59 | ~1881 |
| Ronald Jacobs | Son | — | 23 | ~1917 |
| John Jacobs | Son | — | 21 | ~1919 |
| Bernard Jacobs | Son | — | 16 | ~1924 |
| Mary Jacobs | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Athens, Ohio
Son, age 1
Athens, Ohio · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Athens, Ohio
Son, age 11
Athens, Ohio · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Athens-County, Ohio
Son, age 21
Athens-County, Ohio · implied b. ~1919 — 6 household members
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | York Township |
| 1935 Residence (County) | Athens |
| Occupation | miner |
| Industry | coal mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 758 |
| 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: mother Mary Jacobs (~0.92 confidence) and mother Mary Jacobs (~0.92 confidence) and mother Mary Jacobs (~0.92 confidence) and father William Jacobs (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Jacobs
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Mary Jacobs
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Mary Jacobs
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
William Jacobs
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Jacobs
Son · 1940 · age 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Ronald Jacobs
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Jacobs
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tressa Jacobs
Sibling · 1940 · age 12
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 — Athens-County, Ohio
Open full size
1940 US Federal Census — Athens-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03026-00605)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jenny Mccollister | 50 | Wife | — | Ohio |
| 2 | Delores Mccollister | 23 | Daughter | Homework Private | Ohio |
| 3 | Max Mccollister | 14 | Son | — | Ohio |
| 4 | Linnie Mccollister | 8 | Daughter | — | Ohio |
| 5 | Morgan Releford | 46 | Head | Miner | Kentucky |
| 6 | Lula Releford | 43 | Wife | — | Ohio |
| 7 | Harold Releford | 22 | Son | Miner | Ohio |
| 8 | Walter Releford | 20 | Son | Miner | Ohio |
| 9 | Vera Releford | 18 | Daughter | Waitress | Ohio |
| 10 | Vergena Releford | 16 | Daughter | — | Ohio |
| 11 | Dorothy Releford | 12 | Daughter | — | Ohio |
| 12 | Bob Releford | 4 | Son | — | Ohio |
| 13 | Betty Releford | 4 | Daughter | — | Ohio |
| 14 | William Monks | 52 | Head | Miner | Kentucky |
| 15 | Flora Monks | 50 | Wife | — | Kentucky |
| 16 | Cecil Monks | 24 | Son | Miner | Ohio |
| 17 | Thomas Monks | 22 | Son | Miner | Ohio |
| 18 | Sherman Monks | 17 | Son | New Worker | Ohio |
| 19 | George Monks | 15 | Son | — | Ohio |
| 20 | Lawrence Mansfield | 21 | Head | Miner | Michigan |
| 21 | Betty Jane Mansfield | 17 | Wife | — | Ohio |
| 22 | William Jacobs | 59 | Head | Miner | Germany |
| 23 | Mary Jacobs | 56 | Wife | — | Ohio |
| 24 | Ronald Jacobs | 23 | Son | New Worker | Ohio |
| 25 | John Jacobs THIS PERSON | 21 | Son | Miner | Ohio |
| 26 | Bernard Jacobs | 16 | Son | Farmer | Ohio |
| 27 | Tressa Jacobs | 12 | Daughter | — | Ohio |
| 28 | Frank Gill | 38 | Head | Miner | W. Virginia |
| 29 | Gertrude Gill | 33 | Wife | — | Ohio |
| 30 | Tommy Gill | 12 | Son | — | Ohio |
| 31 | Alex Kitchen | 74 | Head | — | Ohio |
| 32 | Plina Kitchen | 60 | Wife | — | Missouri |
| 33 | Louis Kitchen | 38 | Son | Janitor | Ohio |
| 34 | Guy Berry | 48 | Head | W.P.A. Labor | Ohio |
| 35 | Berry | 43 | Wife | — | Ohio |
| 36 | Elsworth Mccallister | 71 | Head | — | Ohio |
| 37 | Nancy Mccallister | 62 | Wife | — | Ohio |
| 38 | Virgil Mccallister | 36 | Son | Miner | Ohio |
| 39 | Clifford Mccallister | 43 | Head | Miner | Ohio |
| 40 | Martha Mccallister | 27 | Wife | — | Ohio |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 4 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)