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James Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Levy-County, Florida
Our Model Tree links this James Jacobs across the 1930 and 1940 US Censuses in Levy-County, Florida (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 9-person household.
Age 49
b. ~1891
Male
Head
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Levy-County, Florida |
| Surname | Jacobs |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Precinct 6 Montbrook |
| 1935 Residence (County) | Levy |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 240 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Laborer |
| Township / Ward | Precinct 6 Montbrook |
| Est. Birth Year | ~1891 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Blanch Jacobs | Spouse | — | 33 | ~1907 |
| Junior Jacobs | Son | — | 13 | ~1927 |
| Lula Jacobs | Daughter | — | 8 | ~1932 |
| Mary Jacobs | Daughter | — | 11 | ~1929 |
| Carrie Jacobs | Daughter | — | 4 | ~1936 |
| Lonzo Jacobs | Son | — | 6 | ~1934 |
| Jessie Jacobs | Daughter | — | 8 | ~1932 |
| James Jacobs | Head | — | 49 | ~1891 |
| Liza Jacobs | Other | — | 72 | ~1868 |
Census Appearances
1930
Levy, Florida
Head, age 39
Levy, Florida · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 34 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Levy-County, Florida
Head, age 49
Levy-County, Florida · implied b. ~1891 — 9 household members
| Surname | Jacobs |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Precinct 6 Montbrook |
| 1935 Residence (County) | Levy |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 240 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 James Jacobs across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Jacobs
Head · 1940 · age 49 · b. ~1891 · Florida
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Levy-County, Florida
Open full size
1940 US Federal Census — Levy-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00598-00139)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Cook | 75 | Head | Laborer | South Carolina |
| 2 | Alt Hammons | 67 | Head | Laborer | Florida |
| 3 | Mary Hammons | 76 | Wife | — | Florida |
| 4 | Lorene Lawson | 27 | Head | — | Florida |
| 5 | Theora Edwards | 12 | Daughter | — | Florida |
| 6 | Mellie Edwards | 10 | Son | — | Florida |
| 7 | Mollie Hammons | 80 | Mother | — | Florida |
| 8 | Frank B. Hammond | 63 | Head | Laborer | Florida |
| 9 | Fannie Hammond | 36 | Wife | — | Florida |
| 10 | James Hammond | 25 | Son | Laborer | Florida |
| 11 | Harry Hammond | 28 | Son | Laborer | Florida |
| 12 | Josephine Hammond | 19 | Daughter | — | Florida |
| 13 | Lessie B. Hammond | 17 | Daughter | — | Florida |
| 14 | Anthony Hunter | 77 | Head | Operator | Florida |
| 15 | Levie Hunter | 76 | Wife | — | Florida |
| 16 | Dolphus Hammond | 41 | Grandson | Laborer | Florida |
| 17 | James Jacobs THIS PERSON | 49 | Head | Laborer | Florida |
| 18 | Blanch Jacobs | 33 | Wife | — | Florida |
| 19 | Junior Jacobs | 13 | Son | — | Florida |
| 20 | Mary Jacobs | 11 | Daughter | — | Florida |
| 21 | Lula Julia Jacobs | 8 | Daughter | — | Florida |
| 22 | Jessie M. Jacobs | 8 | Daughter | — | Florida |
| 23 | Lonzo Jacobs | 6 | Son | — | Florida |
| 24 | Carrie B. Jacobs | 4 | Daughter | — | Florida |
| 25 | Liza A. Jacobs | 72 | Lodge | — | South Carolina |
| 26 | Manly Brown | 53 | Head | — | Florida |
| 27 | Ryna Oliver | 70 | Head | — | Florida |
| 28 | Roosevelt Edwards | 35 | Lodger | Laborer | Florida |
| 29 | Henry Davis | 45 | Head | Operator | Florida |
| 30 | Lillie Davis | 31 | Wife | — | Florida |
| 31 | Lurrie Davis | 15 | Daughter | — | Florida |
| 32 | Ella Bryant | 64 | Head | Laborer | Florida |
| 33 | Sam Chambers | 15 | Grandson | Laborer | Florida |
| 34 | Nathaniel Williams | 23 | Head | Section Hand | Florida |
| 35 | Mae Mae Williams | 20 | Wife | — | Florida |
| 36 | Noah L. Williams | 6 | Son | — | Florida |
| 37 | Joseph N. Williams | 4 | Son | — | Florida |
| 38 | Ella J. Williams | 2 | Daughter | — | Florida |
| 39 | Ben Caphart | 38 | Head | Laborer | Florida |
| 40 | Thomas Hailes | 55 | Head | Laborer | Florida |
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)