RB
Robert Ball — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this Robert Ball across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a head (b.~1899), then head of a 7-person household.
Age 41
b. ~1899
Male
Head
Born: Georgia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Ball |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steam Railroad Repair Shop |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 188 |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Occupation | Laborer |
| Township / Ward | Jacksonville |
| Est. Birth Year | ~1899 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Willie Ball | Other | — | 9 | ~1931 |
| Catherine Ball | Daughter | — | 29 | ~1911 |
| Clara Ball | Daughter | — | 24 | ~1916 |
| Bertha Ball | Spouse | — | 40 | ~1900 |
| Cara Ball | Daughter | — | 25 | ~1915 |
| Robert Ball | Head | — | 41 | ~1899 |
| Margaret Ball | Daughter | — | 7 | ~1933 |
Census Appearances
1920
Duval, Florida
Other, age 22
Duval, Florida · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bell |
| Given Name | Robert |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Occupation | Washer |
| Industry | Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
Head, age 30
Duval, Florida · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bell |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Georgia |
| Age at First Marriage | 22 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Occupation | laborer |
| Industry | meat packers |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Duval-County, Florida
Head, age 41
Duval-County, Florida · implied b. ~1899 — 7 household members
| Surname | Ball |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Occupation | Laborer |
| Industry | Steam Railroad Repair Shop |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 188 |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Robert Ball across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Ball
Head · 1940 · age 41 · b. ~1899 · 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 — Duval-County, Florida
Open full size
1940 US Federal Census — Duval-County, Florida
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00625-00322)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jesse Dorsey | 32 | Head | Janitor | Georgia |
| 2 | Eva Dorsey | 32 | Wife | Stenographer | Georgia |
| 3 | Jesse Jr. Dorsey | 12 | Son | — | Florida |
| 4 | Natalie Dorsey | 9 | Daughter | — | Florida |
| 5 | Otis Lewis | 32 | Head | Yard Man | Georgia |
| 6 | Beulah Lewis | 27 | Wife | Maid | Florida |
| 7 | Simon Tomlin | 27 | Lodger | Waiter | Georgia |
| 8 | Robert Ball THIS PERSON | 41 | Head | Laborer | Georgia |
| 9 | Bertha Ball | 40 | Wife | — | Georgia |
| 10 | Catherine Ball | 29 | Daughter | Maid | Georgia |
| 11 | Cara Ball | 25 | Daughter | Waitress | Georgia |
| 12 | Clara Ball | 24 | Daughter | — | Georgia |
| 13 | Margaret Ball | 7 | Daughter | — | Florida |
| 14 | Willie Ball | 9 | Nephew | — | Florida |
| 15 | Alexander Jordan | 31 | Head | Office Boy | Georgia |
| 16 | Jessie B. Jordan | 26 | Wife | Maid | Florida |
| 17 | Juanita Jordan | 9 | Daughter | — | Florida |
| 18 | Jessie Mae Jordan | 6 | Daughter | — | Florida |
| 19 | Alexander Jr. Jordan | 4 | Son | — | Florida |
| 20 | Norman Jordan | 2 | Son | — | Florida |
| 21 | Ralph Jordan | 1 | Son | — | Florida |
| 22 | R. D. Scott | 37 | Head | Stevedore | Carolina |
| 23 | Ruby Scott | 28 | Wife | Maid | Georgia |
| 24 | Dorothy Lee Scott | 8 | Daughter | — | Georgia |
| 25 | Ines Scott | 5 | Daughter | — | Florida |
| 26 | Bertha Lee Scott | 4 | Daughter | — | Florida |
| 27 | Rudolph Scott | 2 | Son | — | Florida |
| 28 | Gwendolyn Scott | 1 | Daughter | — | Florida |
| 29 | Arthur Mccoy | 30 | Head | Cook | Mississippi |
| 30 | Bertha Mccoy | 34 | Wife | Laundress | Georgia |
| 31 | Willie Mae Mccoy | 14 | Daughter | — | Florida |
| 32 | Will Anderson | 66 | Head | — | Florida |
| 33 | Alice Yancy | 41 | Lodger | Laundress | Georgia |
| 35 | Florina Chavis | 65 | Head | — | South Carolina |
| 36 | Rosa Chavis | 35 | Daughter | Food Demonstrator | South Carolina |
| 37 | Juanita Chavis | 8 | Granddaughter | — | Florida |
| 38 | Edgar Bale | 32 | Lodger | Attendant | Florida |
| 39 | Lucille Bale | 35 | Wife | Maid | Georgia |
| 40 | Alphonso Bale | 13 | Lodger | — | 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)