IB
Isaac Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sumter-County, Alabama
Our Model Tree links this Isaac Brown across the 1920, 1930 and 1940 US Censuses in Sumter-County, Alabama (XGBoost, ~Confirmed), with identified parents Isaac & Crosley — first a head (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Male
Head
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, Alabama |
| Surname | Brown |
| Given Name | Isaac Q |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Beat 5 |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 52 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Farmer |
| Township / Ward | Beat 5 |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Lillie Brown | Daughter | — | 4 | ~1936 |
| Isaac Brown | Head | — | 29 | ~1911 |
| Willie De Lane | Other | — | 18 | ~1922 |
| Jhonnie Brown | Son | — | 2 | ~1938 |
| Norman Brown | Son | — | 5 | ~1935 |
| Emma Brown | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Sumter, Alabama
Son, age 15
Sumter, Alabama · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Sumter, Alabama
Son, age 23
Sumter, Alabama · implied b. ~1907 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Sumter-County, Alabama
Head, age 29
Sumter-County, Alabama · implied b. ~1911 — 6 household members
| Surname | Brown |
| Given Name | Isaac Q |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Beat 5 |
| 1935 Residence (County) | Sumter |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 52 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Isaac Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Isaac Brown (~0.92 confidence) and father Crosley Brown (~0.92 confidence) and mother Liza Brown (~0.92 confidence) and mother Mary Brown (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Isaac Brown
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Crosley Brown
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Liza Brown
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Mary Brown
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Brown
Head · 1940 · age 29 · b. ~1911 · Alabama
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Sumter-County, Alabama
Open full size
1940 US Federal Census — Sumter-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00080-00128)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Q Brown | 54 | Wife | — | Alabama |
| 42 | Robert Brown | 18 | Son | New Worker | Alabama |
| 43 | Bennie Lee Brown | 17 | Son | New Worker | Alabama |
| 44 | Annie Jackson | 15 | Daughter | New Worker | Alabama |
| 45 | Monroe Mcelroy | 49 | Head | Farmer | Alabama |
| 46 | Sarah Q Mcelroy | 59 | Wife | — | Alabama |
| 47 | Isaac Tailison | 28 | Step son | Farmer | Alabama |
| 48 | Norman Coleman | 25 | Grandson | — | Alabama |
| 49 | T. R. Tailison | 26 | Head | Farmer | Alabama |
| 50 | May Ethel Tailison | 23 | Wife | — | Alabama |
| 51 | Louisa Tailison | 2 | Daughter | — | Alabama |
| 52 | Anna Q Coleman | 58 | Head | Farmer | Alabama |
| 53 | Jessie Mae Coleman | 16 | Daughter | — | Alabama |
| 54 | J. D. Coleman | 14 | Son | — | Alabama |
| 55 | Minnie Ala Coleman | 12 | Daughter | — | Alabama |
| 56 | A. C. Coleman | 9 | Son | — | Alabama |
| 57 | James Henry Brown | 49 | Head | Farmer | Alabama |
| 58 | Martha Q Brown | 52 | Wife | — | Alabama |
| 59 | Isaac Q Brown THIS PERSON | 29 | Head | Farmer | Alabama |
| 60 | Emma Brown | 25 | Wife | — | Alabama |
| 61 | Norman Brown | 5 | Son | — | Alabama |
| 62 | Lillie Brown | 4 | Daughter | — | Alabama |
| 63 | Jhonnie Brown | 2 | Son | — | Alabama |
| 64 | Willie B. De Lane | 18 | Lodger | Wage Hand | Alabama |
| 65 | Madison Brown | 22 | Head | Farmer | Alabama |
| 66 | Corene Brown | 18 | Wife | — | Alabama |
| 67 | John Q Artist | 65 | Head | Farmer | Alabama |
| 68 | Beulah Artist | 60 | Wife | — | Alabama |
| 69 | Samuel Artist | 20 | Son | Wage Hand | Alabama |
| 70 | Lymie Artist | 13 | Grandson | — | Alabama |
| 71 | Gray Artist | 12 | Grandson | — | Alabama |
| 72 | Lillie Maude Artist | 9 | Granddaughter | — | Alabama |
| 73 | Annie Laura Artist | 1 | Granddaughter | — | Alabama |
| 74 | Roosevelt Artist | 27 | Head | Farmer | Alabama |
| 75 | Martha Artist | 22 | Wife | — | Alabama |
| 76 | Johnnie Artist | 2 | Son | — | Alabama |
| 77 | R. D. Bell | 27 | Head | Farmer | Alabama |
| 78 | Ora Dee Q Bell | 27 | Wife | — | Alabama |
| 79 | Anna Mae Bell | 5 | Daughter | — | Alabama |
| 80 | R. T. Bell | 6 | Son | — | Alabama |
Pedigree Summary
Isaac
Gen 1 · 4 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)