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Lulu Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Colorado
Our Model Tree links this Lulu Brown across the 1930 and 1940 US Censuses in Washington-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 6-person household.
Age 19
b. ~1921
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Colorado |
| Surname | Brown |
| Given Name | Lulu |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Precinct 15 De Nova |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Precinct 15 De Nova |
| Est. Birth Year | ~1921 |
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 Lulu | Age | Birth yr |
|---|---|---|---|---|
| Walter Brown | Head | — | 57 | ~1883 |
| Alice Brown | Spouse | — | 53 | ~1887 |
| Lulu Brown | Daughter | — | 19 | ~1921 |
| Marietta Brown | Daughter | — | 14 | ~1926 |
| Bessie Brown | Daughter | — | 21 | ~1919 |
| Beulah Brown | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Washington, Colorado
Daughter, age 9
Washington, Colorado · implied b. ~1921 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Lulu E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Kansas |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Washington-County, Colorado
Daughter, age 19
Washington-County, Colorado · implied b. ~1921 — 6 household members
| Surname | Brown |
| Given Name | Lulu |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Precinct 15 De Nova |
| 1935 Residence (County) | Washington |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Lulu Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lulu Brown
Daughter · 1940 · age 19 · b. ~1921 · Colorado
★ You are viewing this record
Sibling
Bessie Brown
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beulah Brown
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marietta Brown
Sibling · 1940 · age 14
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 — Washington-County, Colorado
Open full size
1940 US Federal Census — Washington-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00480-00794)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A. Kelly | 59 | Head | Farmer | Iowa |
| 2 | Phoebe Kelly | 52 | Wife | — | Kansas |
| 3 | Herbert J. Kelly | 29 | Son | Farm Laborer | Iowa |
| 4 | James J. Jr. Kelly | 25 | Son | — | Colorado |
| 5 | Loretta M. Kelly | 23 | Daughter | — | Colorado |
| 6 | Mary Ann M. Kelly | 20 | Daughter | — | Colorado |
| 7 | Patricia Kelly | 19 | Daughter | — | Colorado |
| 8 | Cecelia Kelly | 16 | Daughter | — | Colorado |
| 9 | George L. Baker | 48 | Head | Farmer | Minnesota |
| 10 | Minnie Baker | 45 | Wife | — | Colorado |
| 11 | Donald Baker | 22 | Son | Farm Laborer | Colorado |
| 12 | Glen Baker | 6 | Son | — | Colorado |
| 13 | George T. Baker | 92 | Head | — | Illinois |
| 14 | Anna Baker | 82 | Wife | — | Wisconsin |
| 15 | Ella Baker | 53 | Daughter | — | Minnesota |
| 16 | Leslie Jeffress | 31 | Head | Farmer | Nebraska |
| 17 | Pearl Jeffress | 26 | Wife | — | Nebraska |
| 18 | Ronald Welch | 21 | Head | Farmer | Colorado |
| 19 | Fern Welch | 18 | Wife | — | Colorado |
| 20 | Frank French | 45 | Head | Farmer | Austria |
| 21 | Laura French | 41 | Wife | — | Kansas |
| 22 | Frances French | 17 | Daughter | Farm Laborer | Colorado |
| 23 | Joseph French | 15 | Son | Farm Laborer | Colorado |
| 24 | Helen French | 11 | Daughter | — | Colorado |
| 25 | John French | 9 | Son | — | Colorado |
| 26 | Frankie French | 6 | Son | — | Colorado |
| 27 | Lewis French | 3 | Son | — | Colorado |
| 28 | Lawrence Wagner | 31 | Head | Farmer | Iowa |
| 29 | Inez Wagner | 30 | Wife | — | Nebraska |
| 30 | Paul Wagner | 4 | Son | — | Colorado |
| 31 | Larry Wagner | 1 | Son | — | Colorado |
| 32 | Lewis Hester | 56 | Head | Farm Laborer | Ohio |
| 33 | Sarah C. Hester | 53 | Wife | — | Ohio |
| 34 | Iris Hester | 27 | Son | Farm Laborer | Indiana |
| 35 | Walter Brown | 57 | Head | Farmer | Illinois |
| 36 | Alice Brown | 53 | Wife | — | Kansas |
| 37 | Bessie Brown | 21 | Daughter | Farm Laborer | Colorado |
| 38 | Lulu Brown THIS PERSON | 19 | Daughter | — | Colorado |
| 39 | Beulah Brown | 17 | Daughter | — | Colorado |
| 40 | Marietta Brown | 14 | Daughter | — | Colorado |
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)