IB
Isaac Brown — 1940 US Census Record
Linked across censuses1940 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) — first a head (b.~1877), then head of a 6-person household.
Age 63
b. ~1877
Male
Head
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, Alabama |
| Surname | Brown |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Farmer |
| Township / Ward | Clayton Precinct 10 |
| Est. Birth Year | ~1877 |
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 |
|---|---|---|---|---|
| Mollie Brown | Daughter | — | 13 | ~1927 |
| Ida Brown | Daughter | — | 23 | ~1917 |
| Isaac Brown | Head | — | 63 | ~1877 |
| Willie Brown | Son | — | 16 | ~1924 |
| Charley Brown | Son | — | 11 | ~1929 |
| Rhoda Brown | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Sumter, Alabama
Other, age 40
Sumter, Alabama · implied b. ~1880 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Isaac |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Labour |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Sumter, Alabama
Head, age 52
Sumter, Alabama · implied b. ~1878 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Isaac W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 22 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | No |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Sumter-County, Alabama
Head, age 63
Sumter-County, Alabama · implied b. ~1877 — 6 household members
| Surname | Brown |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sumter |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Alabama |
| 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.
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This person
Anchor record
Isaac Brown
Head · 1940 · age 63 · b. ~1877 · 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-t0627-00080-00487)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Embeston Lucky | 75 | Head | — | Alabama |
| 2 | Mary Julia Lucky | 55 | Daughter | — | Alabama |
| 3 | Son Lucky | 43 | Son | — | Alabama |
| 4 | Annie Lucky | 35 | Daughter | — | Alabama |
| 5 | John D. Lucky | 26 | Son | — | Alabama |
| 6 | Emma Reed | 28 | Head | Farmer | Alabama |
| 7 | George Jackson | 26 | Head | Farmer | Alabama |
| 8 | Lizzie Jackson | 25 | Wife | — | Alabama |
| 9 | Melvina Jackson | 8 | Daughter | — | Alabama |
| 10 | Jerry Jackson | 5 | Son | — | Alabama |
| 11 | Booker Jackson | 3 | Son | — | Alabama |
| 12 | A. L. Jackson | 1 | Son | — | Alabama |
| 13 | Pink Williams | 54 | Head | Farmer | Alabama |
| 14 | Francis Williams | 45 | Wife | — | Alabama |
| 15 | Mary Williams | 17 | Niece | — | Alabama |
| 16 | Phillip Mitchell | 20 | Head | Farmer | Alabama |
| 17 | Hester Mitchell | 17 | Wife | — | Alabama |
| 18 | Isaac Brown THIS PERSON | 63 | Head | Farmer | Alabama |
| 19 | Rhoda Brown | 59 | Wife | — | Alabama |
| 20 | Ida Brown | 23 | Daughter | — | Alabama |
| 21 | Willie Brown | 16 | Son | — | Alabama |
| 22 | Mollie Eldora Brown | 13 | Daughter | — | Alabama |
| 23 | Charley Brown | 11 | Son | — | Alabama |
| 24 | Eugene Morris | 21 | Head | Farm Laborer | Alabama |
| 25 | Laura Morris | 20 | Wife | — | Alabama |
| 26 | George Scott | 32 | Head | Farmer | Alabama |
| 27 | Adeline Scott | 25 | Wife | — | Alabama |
| 28 | Ethel Lee Scott | 8 | Daughter | — | Alabama |
| 29 | A. B. Boyd | 61 | Head | Farmer | Alabama |
| 30 | Waldon German | 30 | Head | Cook | Alabama |
| 31 | Lucile German | 16 | Daughter | — | Alabama |
| 32 | Mary German | 12 | Daughter | — | Alabama |
| 33 | Willie Q. Lucky | 3 | Boarder | — | Alabama |
| 34 | Lester American | 25 | Head | Farmer | Alabama |
| 35 | Louise American | 22 | Wife | — | Alabama |
| 36 | Lula Brown | 28 | Head | Farmer | Alabama |
| 37 | Joe Johnson | 9 | Son | — | Alabama |
| 38 | Willie Johnson | 8 | Son | — | Alabama |
| 39 | Ardenia Johnson | 5 | Daughter | — | Alabama |
| 40 | Robert Johnson | 3 | Son | — | Alabama |
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)