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John Jacobs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jackson-County, Arkansas
Our Model Tree links this John Jacobs across the 1920, 1930 and 1940 US Censuses in Jackson-County, Arkansas (XGBoost, ~Confirmed), with identified parents James & Joseph — first a son (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Male
Son
Born: Arkansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Arkansas |
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arkansas |
| 1935 Residence (City) | Cow Lake |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
| Occupation | Laborer |
| Township / Ward | Cow Lake |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Jacobs | Daughter | — | 19 | ~1921 |
| Mildred Jacobs | Daughter | — | 10 | ~1930 |
| Joyce Jacobs | Daughter | — | 5 | ~1935 |
| Laverne Jacobs | Daughter | — | 7 | ~1933 |
| James Jacobs | Head | — | 55 | ~1885 |
| Dewitt Jacobs | Son | — | 14 | ~1926 |
| John Jacobs | Son | — | 21 | ~1919 |
| Alford Jacobs | Son | — | 16 | ~1924 |
| Cora Jacobs | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Jackson, Arkansas
Son, age
Jackson, Arkansas · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Arkansas |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Arkansas |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
1930
Jackson, Arkansas
Son, age 11
Jackson, Arkansas · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arkansas |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Arkansas |
| Can Read/Write | Yes |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
1940
Jackson-County, Arkansas
Son, age 21
Jackson-County, Arkansas · implied b. ~1919 — 9 household members
| Surname | Jacobs |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arkansas |
| 1935 Residence (City) | Cow Lake |
| 1935 Residence (County) | Jackson |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
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 James Jacobs (~0.92 confidence) and father Joseph Jacobs (~0.92 confidence) and mother Cora Jacobs (~0.92 confidence) and mother Cora Jacobs (~0.92 confidence) and mother Ora Jacobs (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Jacobs
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Joseph Jacobs
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Cora Jacobs
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Cora Jacobs
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Ora Jacobs
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jacobs
Son · 1940 · age 21 · b. ~1919 · Arkansas
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Sibling
Mildred Jacobs
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dewitt Jacobs
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Jacobs
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laverne Jacobs
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alford Jacobs
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Jacobs
Sibling · 1940 · age 5
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 — Jackson-County, Arkansas
Open full size
1940 US Federal Census — Jackson-County, Arkansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00144-00832)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Powers | 67 | Head | Laborer | Indiana |
| 42 | Martha Powers | 58 | Wife | — | Arkansas |
| 43 | Belle Stone | 32 | Daughter | — | Arkansas |
| 44 | Homer Stone | 16 | Grandson | Laborer | Arkansas |
| 45 | Truman Stone | 7 | Grandson | — | Arkansas |
| 46 | J. L. Stone | 4 | Grandson | — | Arkansas |
| 47 | Edna Stone | 12 | Granddaughter | — | Arkansas |
| 48 | Howard Carlton | 32 | Head | Laborer | Arkansas |
| 49 | Peary Carlton | 31 | Wife | — | Arkansas |
| 50 | J. N. Carlton | 4 | Son | — | Arkansas |
| 51 | Irene Carlton | 1 | Daughter | — | Arkansas |
| 52 | Henry Watkins | 63 | Head | Farmer | Tennessee |
| 53 | Emma Watkins | 47 | Wife | — | Arkansas |
| 54 | Arbery Hanley | 28 | Head | Farmer | Arkansas |
| 55 | Irene Hanley | 28 | Wife | — | Arkansas |
| 56 | James Hanley | 6 | Son | — | Arkansas |
| 57 | Jimmy Hanley | 3 | Son | — | Arkansas |
| 58 | Raymond Hanley | 1 | Son | — | Arkansas |
| 59 | D. W. Rushing | 71 | Lodger | Laborer | Mississippi |
| 60 | Roy Marlen | 30 | Head | Farmer | Arkansas |
| 61 | Lois Marlen | 24 | Wife | — | Arkansas |
| 62 | Alton Marlen | 10 | Son | — | Arkansas |
| 63 | Etta Marlen | 7 | Daughter | — | Arkansas |
| 64 | Joe Marlen | 6 | Son | — | Arkansas |
| 65 | Stanley Marlen | 4 | Son | — | Arkansas |
| 66 | Kenneth Marlen | 2 | Son | — | Arkansas |
| 67 | Ralph Marlen | 1 | Son | — | Arkansas |
| 68 | Everett Baumgarner | 25 | Head | Laborer | Arkansas |
| 69 | Pearl Baumgarner | 23 | Wife | — | Arkansas |
| 70 | Earl Jr. Baumgarner | 2 | Son | — | Arkansas |
| 71 | James Jacobs | 55 | Head | Farmer | Arkansas |
| 72 | Cora Jacobs | 47 | Wife | — | Arkansas |
| 73 | John Jacobs THIS PERSON | 21 | Son | Laborer | Arkansas |
| 74 | Alice Jacobs | 19 | Daughter | — | Arkansas |
| 75 | Alford Jacobs | 16 | Son | — | Arkansas |
| 76 | Dewitt Jacobs | 14 | Son | — | Arkansas |
| 77 | Mildred Jacobs | 10 | Daughter | — | Arkansas |
| 78 | Laverne Jacobs | 7 | Daughter | — | Arkansas |
| 79 | Joyce Jacobs | 5 | Daughter | — | Arkansas |
| 80 | Charles Martin | 71 | Head | Laborer | Arkansas |
Pedigree Summary
John + 6 siblings
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)