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Marjorie Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Illinois
Our Model Tree links this Marjorie Brown across the 1930 and 1940 US Censuses in Mercer-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Illinois |
| Surname | Brown |
| Given Name | Marjorie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | New Boston Township |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | New Boston Township |
| Est. Birth Year | ~1927 |
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 Marjorie | Age | Birth yr |
|---|---|---|---|---|
| Ralph Brown | Head | — | 49 | ~1891 |
| Marjorie Brown | Daughter | — | 13 | ~1927 |
| Dora Brown | Daughter | — | 9 | ~1931 |
| Beryl Brown | Daughter | — | 8 | ~1932 |
| Hubert Brown | Son | — | 18 | ~1922 |
| Bonnie Brown | Daughter | — | 12 | ~1928 |
| June Brown | Daughter | — | 2 | ~1938 |
| Mildred Brown | Daughter | — | 15 | ~1925 |
| Grace Brown | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Mercer, Illinois
Daughter, age 3
Mercer, Illinois · implied b. ~1927 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mercer-County, Illinois
Daughter, age 13
Mercer-County, Illinois · implied b. ~1927 — 9 household members
| Surname | Brown |
| Given Name | Marjorie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | New Boston Township |
| 1935 Residence (County) | Mercer |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Marjorie Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marjorie Brown
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Hubert Brown
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beryl Brown
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dora Brown
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Brown
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bonnie Brown
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Brown
Sibling · 1940 · age 15
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 — Mercer-County, Illinois
Open full size
1940 US Federal Census — Mercer-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00858-00339)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ubumeta | Wumeta Cooley | 19 | daughter | — | Illinois |
| 2 | Ralph Brown | 49 | head | Road Laborer | Illinois |
| 3 | Grace Brown | 46 | wife | — | Illinois |
| 4 | Hubert Brown | 18 | son | Laborer | Illinois |
| 5 | Mildred Brown | 15 | daughter | — | Illinois |
| 6 | Marjorie Brown THIS PERSON | 13 | daughter | — | Illinois |
| 7 | Bonnie Brown | 12 | daughter | — | Illinois |
| 8 | Dora Brown | 9 | daughter | — | Illinois |
| 9 | Beryl Brown | 8 | daughter | — | Illinois |
| 10 | June Brown | 2 | daughter | — | Illinois |
| 11 | Harry Bigger | 50 | head | Farmer | Florida |
| 12 | Floyd Weikert | 23 | head | Farmer | Illinois |
| 13 | Letha Weikert | 26 | wife | — | Illinois |
| 14 | Ernest Weikert | 6 | son | — | Illinois |
| 15 | Joan Weikert | 4 | daughter | — | Illinois |
| 16 | Earl Sinkey | 39 | head | Lock Master | Iowa |
| 17 | Pearl Sinkey | 47 | wife | — | Iowa |
| 18 | Albert Behnke | 31 | head | Assistant Lock Master | Iowa |
| 19 | Helen Behnke | 31 | wife | — | Iowa |
| 20 | Richard Behnke | 1 | son | — | Iowa |
| 21 | Roy Hays | 49 | head | Farmer | Illinois |
| 22 | Frances Hays | 40 | wife | — | Illinois |
| 23 | Olive Hays | 18 | daughter | — | Illinois |
| 24 | Frances Hays | 12 | daughter | — | Illinois |
| 25 | Leslie Hays | 5 | son | — | Illinois |
| 26 | Evelyn Hays | 20 | head | — | Wisconsin |
| 27 | Melvin Hays | 20 | brother in law | Farm Laborer | Illinois |
| 28 | Helen Hays | 15 | sister in law | — | Illinois |
| 29 | Raymond Hays | 13 | brother in law | — | Illinois |
| 30 | Stanley Smith | 29 | head | Farmer | Illinois |
| 31 | Dorean Smith | 18 | wife | — | Illinois |
| 32 | Fay Cooper | 37 | head | Farm Laborer | Illinois |
| 33 | Ineth Cooper | 37 | wife | — | Illinois |
| 34 | Samuel Cooper | 8 | son | — | Illinois |
| 35 | Mary Ellen Cooper | 2 | daughter | — | Illinois |
| 36 | Robert Mcintire | 34 | head | Farmer | Illinois |
| 37 | Mary Jane Mcintire | 24 | wife | — | Iowa |
| 38 | Caroline Hall | 20 | lodger | Grade Teacher | Iowa |
| 39 | Eugene Carlson | 51 | head | Farmer | Illinois |
| 40 | Geneva Carlson | 46 | wife | — | Illinois |
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)