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John Jacobs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Summit-County, Ohio
Our Model Tree links this John Jacobs across the 1920, 1930 and 1940 US Censuses in Summit-County, Ohio (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Summit-County, Ohio |
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Akron |
| 1935 Residence (County) | Summit |
| Additional Details | |
| Hours Worked | 45 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Akron |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Catherine Jacobs | Daughter | — | 16 | ~1924 |
| William Jacobs | Head | — | 52 | ~1888 |
| Irene Jacobs | Other | — | 19 | ~1921 |
| Ira Jacobs | Son | — | 20 | ~1920 |
| John Jacobs | Son | — | 24 | ~1916 |
| Hazel Jacobs | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Summit, Ohio
Son, age 4
Summit, Ohio · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Summit, Ohio
Son, age 14
Summit, Ohio · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Summit-County, Ohio
Son, age 24
Summit-County, Ohio · implied b. ~1916 — 6 household members
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Akron |
| 1935 Residence (County) | Summit |
| Hours Worked | 45 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| 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 William Jacobs (~0.92 confidence) and father William Jacobs (~0.92 confidence) and father William Jacobs (~0.92 confidence) and mother Hazel Jacobs (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Jacobs
b. ~1888
Source father
● Household
· direct · ~0.92
Father
William Jacobs
b. ~1889
Source father
● Household
· direct · ~0.92
Father
William Jacobs
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Hazel Jacobs
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jacobs
Son · 1940 · age 24 · b. ~1916 · Ohio
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Sibling
Ira Jacobs
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Jacobs
Sibling · 1940 · age 16
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 — Summit-County, Ohio
Open full size
1940 US Federal Census — Summit-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03173-00484)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul Baum | 24 | Brother-in-law | Fireman | Ohio |
| 42 | James Fanelly | 33 | Head | Receiving Clerk | Italy |
| 43 | Anne Fanelly | 30 | Wife | — | Ohio |
| 44 | James Fanelly | 5 | Son | — | Ohio |
| 45 | Loretta Fanelly | 3 | Daughter | — | Ohio |
| 46 | Foster Shaffer | 43 | Head | Laborer | Ohio |
| 47 | Winifred B. Shaffer | 38 | Wife | — | Ohio |
| 48 | Grace Shaffer | 20 | Daughter | N Y A | Ohio |
| 49 | Le Roy Shaffer | 19 | Son | Farm Helper | Ohio |
| 50 | Bertha Shaffer | 17 | Daughter | — | Ohio |
| 51 | Allen Earl Shaffer | 15 | Son | — | Ohio |
| 52 | Allen Shaffer | 13 | Son | — | Ohio |
| 53 | Harold Shaffer | 11 | Son | — | Ohio |
| 54 | Gerald Shaffer | 7 | Son | — | Ohio |
| 55 | Russell Shaffer | 6 | Son | — | Ohio |
| 56 | Ronald Shaffer | 1 | Son | — | Ohio |
| 57 | Eula B. Rucker | 63 | Head | — | Ohio |
| 58 | Harriet Clover | 78 | Head | — | Ohio |
| 59 | William Jacobs | 52 | Head | — | Ohio |
| 60 | Hazel Jacobs | 47 | Wife | — | Ohio |
| 61 | Ira Jacobs | 20 | Son | — | Ohio |
| 62 | Catherine Jacobs | 16 | Daughter | — | Ohio |
| 63 | John Jacobs THIS PERSON | 24 | Son | — | Ohio |
| 64 | Irene Jacobs | 19 | Daughter-in-law | — | Ohio |
| 65 | Edward Elzholz | 57 | Head | Laborer | Pennsylvania |
| 66 | Claire Elzholz | 45 | Wife | — | Ohio |
| 67 | Marie Elzholz | 15 | Daughter | — | Ohio |
| 68 | Claire Elzholz | 12 | Daughter | — | Ohio |
| 69 | Herman Elzholz | 9 | Son | — | Ohio |
| 70 | Donald Elzholz | 5 | Son | — | Ohio |
| 71 | Frank Cozzoli | 56 | Head | Retail Clerk | Italy |
| 72 | Pasqualina Cozzoli | 55 | Wife | — | Italy |
| 73 | Onofrio Cozzoli | 26 | Daughter | Tube Splicer | Massachusetts |
| 74 | Antonio Cozzoli | 25 | Son | Manager Of Own Store | Massachusetts |
| 75 | Dorothy Cozzoli | 10 | Daughter | — | Ohio |
| 76 | Frances Cozzoli | 5 | Daughter | — | Ohio |
| 77 | Elvira Cozzarelli | 19 | Niece-in-law | Clerk Retail | Massachusetts |
| 78 | Michael Pasquale | 56 | Head | Retail Clerk | Italy |
| 79 | Rose Pasquale | 47 | Wife | — | Italy |
| 80 | Josephine Pasquale | 22 | Daughter | — | Ohio |
Pedigree Summary
John + 2 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)