LJ
Leonard Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Columbia-County, Florida
Our Model Tree links this Leonard Jones across the 1930 and 1940 US Censuses in Columbia-County, Florida (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 9-person household.
Age 25
b. ~1915
Male
Son
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbia-County, Florida |
| Surname | Jones |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Precinct 3 |
| 1935 Residence (County) | Columbia |
| Additional Details | |
| Occupation | Farming |
| Industry | Father's Farm |
| Class of Worker | NP |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Farming |
| Township / Ward | Precinct 3 |
| Est. Birth Year | ~1915 |
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 Leonard | Age | Birth yr |
|---|---|---|---|---|
| Daisy Jones | Daughter | — | 12 | ~1928 |
| Flem Jones | Head | — | 44 | ~1896 |
| Leonard Jones | Son | — | 25 | ~1915 |
| Mae Jones | Daughter | — | 17 | ~1923 |
| Warren Jones | Son | — | 18 | ~1922 |
| Racheal Jones | Daughter | — | 15 | ~1925 |
| Mary Jones | Daughter | — | 12 | ~1928 |
| Nancy Jones | Spouse | — | 46 | ~1894 |
| Ella Jones | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Columbia, Florida
Son, age 15
Columbia, Florida · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Columbia-County, Florida
Son, age 25
Columbia-County, Florida · implied b. ~1915 — 9 household members
| Surname | Jones |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Precinct 3 |
| 1935 Residence (County) | Columbia |
| Occupation | Farming |
| Industry | Father's Farm |
| Class of Worker | NP |
| Hours Worked | 30 |
| Income (1939) | 0 |
| 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 Leonard Jones across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leonard Jones
Son · 1940 · age 25 · b. ~1915 · Florida
★ You are viewing this record
Sibling
Warren Jones
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Jones
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Racheal Jones
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Jones
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daisy Jones
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mae Jones
Sibling · 1940 · age 17
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 — Columbia-County, Florida
Open full size
1940 US Federal Census — Columbia-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00579-00057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Melissa Mands | 51 | Head | Farming | Florida |
| 2 | Louvenia Jones | 11 | Daughter | — | Florida |
| 3 | J. C. Turner | 35 | Head | Turpentine Work | Florida |
| 4 | Leila B. Turner | 30 | Wife | — | Florida |
| 5 | J. E. Turner | 13 | Son | — | Florida |
| 6 | John Crawford | 67 | Head | Farming | Florida |
| 7 | Alvena Crawford | 60 | Wife | — | Florida |
| 8 | Cecil Crawford | 29 | Son | Farming | Florida |
| 9 | Miron Crawford | 22 | Son | Farming | Florida |
| 10 | Joe Crawford | 20 | Son | Farming | Florida |
| 11 | Vannie Crawford | 21 | Daughter-in-law | — | Florida |
| 12 | Charley Martin | 55 | Head | Farming | Florida |
| 13 | Annie Martin | 54 | Wife | — | Florida |
| 14 | Charley Jr. Martin | 23 | Son | Farming | Florida |
| 15 | Harry Martin | 21 | Son | Farming | Florida |
| 16 | Lee Williams | 60 | Head | Farming | Georgia |
| 17 | Lee Williams | 40 | Wife | — | Georgia |
| 18 | Turner Williams | 19 | Son | Farming | Georgia |
| 19 | Ruby Williams | 18 | Daughter | Farming | Georgia |
| 20 | Jerry Williams | 16 | Son | Farming | Georgia |
| 21 | Harry Lee Williams | 15 | Son | Farming | Georgia |
| 22 | Prince Williams | 13 | Son | — | Georgia |
| 23 | Wallice Williams | 11 | Son | — | Georgia |
| 24 | M. C. Williams | 8 | Son | — | Florida |
| 25 | Aggie Mae Williams | 6 | Daughter | — | Florida |
| 26 | Robbie Lee Williams | 5 | Daughter | — | Florida |
| 27 | J. A. Barton | 53 | Head | — | Florida |
| 28 | Salomonie Barton | 46 | Wife | — | Florida |
| 29 | Sylvesta Coster | 53 | Head | Farming | Florida |
| 30 | Alitha Coster | 28 | Wife | — | Florida |
| 31 | Lovinia Coster | 11 | Son | — | Florida |
| 32 | Flem Jones | 44 | Head | Farming | Florida |
| 33 | Nancy Jones | 46 | Wife | — | Florida |
| 34 | Leonard Jones THIS PERSON | 25 | Son | Farming | Florida |
| 35 | Warren Jones | 18 | Son | Farming | Florida |
| 36 | Mae Jones | 17 | Daughter | New Worker | Florida |
| 37 | Racheal Jones | 15 | Daughter | — | Florida |
| 38 | Mary Jones | 12 | Daughter | — | Florida |
| 39 | Daisy Jones | 12 | Daughter | — | Florida |
| 40 | Ella Ruth Jones | 7 | Daughter | — | Florida |
Related Census Records
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)