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Jack Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lake-County, Ohio
Our Model Tree links this Jack Davis across the 1920, 1930 and 1940 US Censuses in Lake-County, Ohio (XGBoost, ~Confirmed), with identified parents David & David — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Ohio |
| Surname | Davis |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Leroy |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | machinist |
| Industry | Vance Mach Coe Mfg Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 950 |
| Highest Grade | No 12 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Machinist |
| Township / Ward | Leroy |
| Est. Birth Year | ~1917 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Bessie Davis | Spouse | — | 43 | ~1897 |
| Joyce Davis | Daughter | — | 12 | ~1928 |
| Jack Davis | Son | — | 23 | ~1917 |
| David Davis | Head | — | 44 | ~1896 |
| Carroll Davis | Son | — | 16 | ~1924 |
Census Appearances
1920
Lake, Ohio
Other, age 3
Lake, Ohio · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Jack E |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Lake, Ohio
Son, age 13
Lake, Ohio · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Lake-County, Ohio
Son, age 23
Lake-County, Ohio · implied b. ~1917 — 5 household members
| Surname | Davis |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Leroy |
| 1935 Residence (County) | Lake |
| Occupation | machinist |
| Industry | Vance Mach Coe Mfg Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 950 |
| Highest Grade | No 12 |
| 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 Jack Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Davis (~0.92 confidence) and father David Davis (~0.92 confidence) and mother Bessie Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Davis
b. ~1896
Source father
● Household
· direct · ~0.92
Father
David Davis
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Bessie Davis
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jack Davis
Son · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
Carroll Davis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Davis
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 — Lake-County, Ohio
Open full size
1940 US Federal Census — Lake-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03094-00242)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin Hoffman | 62 | Head | Retired | New York |
| 2 | Lydia Hoffman | 55 | Wife | — | Ohio |
| 3 | Frank Mayer | 67 | Head | Farmer | Bohemia |
| 4 | Barbara Mayer | 70 | Wife | — | Bohemia |
| 5 | Frank Gajevsky | 56 | Head | Farmer | Poland |
| 6 | Charles H Levengood | 73 | Head | Farmer | Ohio |
| 7 | Ida Levengood | 66 | Wife | — | Ohio |
| 8 | Lucile Talcott | 48 | Daughter | — | Ohio |
| 9 | Joseph Horvath | 57 | Head | Hostler | Hungary |
| 10 | Mary Horvath | 53 | Wife | — | Hungary |
| 11 | Margaret Horvath | 19 | Daughter | Stenographer | Ohio |
| 12 | Joseph 3Rd Horvath | 8 | Grandson | — | Ohio |
| 13 | Alex Koala | 48 | Head | Farmer | Hungary |
| 14 | Mary Koala | 52 | Wife | — | Hungary |
| 15 | John Koala | 26 | Son | — | Ohio |
| 16 | Helen Koala | 24 | Daughter | Basket Maker | Ohio |
| 17 | Charles Koala | 20 | Son | New Worker | Ohio |
| 18 | Glen Norris | 36 | Head | Recreation Leader | Ohio |
| 19 | Gladys Norris | 35 | Wife | — | Ohio |
| 20 | Annabel Norris | 16 | Daughter | — | Ohio |
| 21 | Robert Norris | 14 | Son | — | Ohio |
| 22 | Emma Norris | 12 | Daughter | — | Ohio |
| 23 | Melvin Norris | 7 | Son | — | Ohio |
| 24 | Anton Pogozelski | 58 | Head | Farmer | Poland |
| 25 | Theresa Pogozelski | 25 | Daughter | Basket Maker | Ohio |
| 26 | Steve Pogozelski | 23 | Son | Laborer | Ohio |
| 27 | Mary Pogozelski | 22 | Daughter | Maid | Ohio |
| 28 | David Davis | 44 | Head | Farmer | Ohio |
| 29 | Bessie Davis | 43 | Wife | — | Ohio |
| 30 | Jack Davis THIS PERSON | 23 | Son | Machinist | Ohio |
| 31 | Carroll Davis | 16 | Son | — | Ohio |
| 32 | Joyce Davis | 12 | Daughter | — | Ohio |
| 33 | J. Hugh Tyrrell | 57 | Head | Painter, Paper | Ohio |
| 34 | Lura Tyrrell | 52 | Wife | — | Nebraska |
| 35 | Edward Hartwig | 15 | Boarder | — | Ohio |
| 36 | Albert Ross | 37 | Head | Farmer | Hungary |
| 37 | Esther Ross | 34 | Wife | — | Hungary |
| 38 | Albert Jr Ross | 5 | Son | — | Ohio |
| 39 | Julia Ross | 65 | Mother | — | Hungary |
| 40 | John Muzik | 57 | Head | Farmer | Checoslovakia |
Pedigree Summary
Jack + 2 siblings
Gen 1 · 3 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)