DB
Donald Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Donald Brown across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Leon & Leon — first a head (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Brown |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Tube bender |
| Industry | Aeroplane Co |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 996 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Tube Bender |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Donald Brown | Head | — | 27 | ~1913 |
| Leon Brown | Other | — | 58 | ~1882 |
| Lawrence Brown | Son | — | 4 | ~1936 |
| Donald Brown | Son | — | 5 | ~1935 |
| Anna Brown | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Pierce, Washington
Son, age 7
Pierce, Washington · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Donald L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | North Dakota |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
King, Washington
Son, age 17
King, Washington · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Donald E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | North Dakota |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
King-County, Washington
Head, age 27
King-County, Washington · implied b. ~1913 — 5 household members
| Surname | Brown |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Tube bender |
| Industry | Aeroplane Co |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 996 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Donald Brown across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Leon Brown (~0.92 confidence) and father Leon Brown (~0.92 confidence) and mother Sadie Brown (~0.92 confidence) and mother Sadie Brown (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Leon Brown
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Leon Brown
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Sadie Brown
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Sadie Brown
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Brown
Head · 1940 · age 27 · b. ~1913 · Washington
★ 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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04379-00307)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Evelyn Taylor | 20 | Head | Maid | Washington |
| 2 | William Washington | 21 | Brother-in-law | Bell Hop | California |
| 3 | Irene Washington | 21 | Sister | — | Washington |
| 4 | Shirley Washington | 4 | daughter | — | Washington |
| 5 | Anna Hunt | 69 | Head | — | Texas |
| 6 | Anna Harris | 65 | Head | — | Virginia |
| 7 | Donald Brown THIS PERSON | 27 | Head | Tube Bender | North Dakota |
| 8 | Anna Brown | 27 | Wife | — | Washington |
| 9 | Donald Brown | 5 | son | — | Washington |
| 10 | Lawrence Brown | 4 | son | — | Washington |
| 11 | Leon Brown | 58 | Father | Painter | Wisconsin |
| 12 | Annie Asphalt | 66 | Head | — | Pennsylvania |
| 13 | Martha Vance | 72 | Head | — | Illinois |
| 14 | Robert Rowan | 63 | Head | Cleaner | Missouri |
| 15 | May Rowan | 55 | Wife | — | Louisiana |
| 16 | Robert Rowan | 23 | Nephew | Porter | Ohio |
| 17 | John Cooper | 28 | Lodger | Porter | Louisiana |
| 18 | Florence Robinson | 71 | Head | — | England |
| 19 | Alexander D. Freese | 67 | Head | Lineman Helper | Kentucky |
| 20 | Nellie Freese | 62 | Wife | — | Oregon |
| 21 | Edith Hundergraber | 70 | Head | — | Minnesota |
| 22 | Archie Wilson | 60 | Lodger | Cook | Scotland |
| 23 | Frank Hundel | 80 | Lodger | — | Pennsylvania |
| 24 | William Carr | 30 | Head | Cook | California |
| 25 | Viola Carr | 27 | Wife | — | Illinois |
| 26 | John O'Meara | 38 | Head | Labourer | Minnesota |
| 27 | Josephine O'Meara | 43 | Wife | — | Minnesota |
| 28 | Margaret O'Meara | 11 | daughter | — | Washington |
| 29 | Doris O'Meara | 10 | daughter | — | Washington |
| 30 | John O'Meara | 9 | son | — | Washington |
| 31 | Frank Costa | 29 | Head | — | Washington |
| 32 | Juanita Costa | 26 | Wife | — | Washington |
| 33 | Ronald Costa | 8 | son | — | Washington |
| 34 | Elaine Costa | 3 | daughter | — | Washington |
| 35 | Audrey Costa | 1 | daughter | — | Washington |
| 36 | Bernard Aguirre | 35 | Head | Executive Secretary | Ohio |
| 37 | Malvina Aguirre | 34 | Wife | — | Alabama |
| 38 | Mildred Aguirre | 18 | daughter | — | Minnesota |
| 39 | Joanne Aguirre | 7 | daughter | — | Ohio |
Pedigree Summary
Donald
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)