AB
Alexander Brown — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Alexander Brown across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 11-person household.
Age 50
b. ~1880
Male
Head
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | — |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1924 |
| Age at First Marriage | 26 |
| Father's Birthplace | North Ireland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Engineer |
| Industry | Illinois Masonic Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Engineer |
| Township / Ward | La Grange Village |
| Est. Birth Year | ~1880 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Alexander | Age | Birth yr |
|---|---|---|---|---|
| Thomasina Brown | Daughter | — | 12 | ~1918 |
| Jessie Brown | Daughter | — | 10 | ~1920 |
| Rita Brown | Daughter | — | ~1930 | |
| Mary Brown | Daughter | — | 17 | ~1913 |
| William Brown | Son | — | 3 | ~1927 |
| Agnes Brown | Daughter | — | 13 | ~1917 |
| John Brown | Son | — | 22 | ~1908 |
| Alexander Brown | Son | — | 6 | ~1924 |
| Alexander Brown | Head | — | 50 | ~1880 |
| Martha Brown | Other | — | 44 | ~1886 |
| Annie Brown | Daughter | — | 19 | ~1911 |
Census Appearances
1930
Cook, Illinois
Head, age 50
Cook, Illinois · implied b. ~1880 — 11 household members
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | Head |
| Sex | M |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1924 |
| Age at First Marriage | 26 |
| Father's Birthplace | North Ireland |
| Mother's Birthplace | Scotland |
| Occupation | Engineer |
| Industry | Illinois Masonic Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Cook-County, Illinois
Other, age 64
Cook-County, Illinois · implied b. ~1876 — 40 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | Guest |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Alexander Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Alexander Brown
Head · 1930 · age 50 · b. ~1880 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
12 people indexed on this census page (ia:1930:illinoiscensus00reel502:0563)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence Thompson | 45 | Head | Nurse | Pennsylvania |
| 2 | Alexander Brown THIS PERSON | 50 | Head | Engineer | Scotland |
| 3 | Martha Brown | 44 | wife H | None | Scotland |
| 4 | John L Brown | 22 | son | Draftsman | Scotland |
| 5 | Annie W Brown | 19 | daughter | Stenographer | Scotland |
| 6 | Mary A Brown | 17 | daughter | None | English Canada |
| 7 | Agnes D Brown | 13 | daughter | None | English Canada |
| 8 | Thomasina Brown | 12 | daughter | None | English Canada |
| 9 | Jessie Brown | 10 | daughter | None | English Canada |
| 10 | Alexander Brown | 6 | son | None | Illinois |
| 11 | William Brown | 3 | son | None | Illinois |
| 12 | Rita J Brown | 0 | daughter | None | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)