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Mary Bradford — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this Mary Bradford across the 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 6-person household.
Age 16
b. ~1924
Female
Daughter
Born: Idaho
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Bradford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Auburn City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Occupation | 0 |
| Township / Ward | Auburn City |
| Est. Birth Year | ~1924 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Bradford | Daughter | — | 11 | ~1929 |
| Kenneth Bradford | Son | — | 10 | ~1930 |
| Mary Bradford | Daughter | — | 16 | ~1924 |
| Harold Bradford | Son | — | 20 | ~1920 |
| Paul Bradford | Head | — | 43 | ~1897 |
| Mable Bradford | Spouse | — | 31 | ~1909 |
Census Appearances
1930
Pierce, Washington
Daughter, age 6
Pierce, Washington · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradford |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Oklahoma |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
King-County, Washington
Daughter, age 16
King-County, Washington · implied b. ~1924 — 6 household members
| Surname | Bradford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Auburn City |
| 1935 Residence (County) | King |
| Occupation | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Mary Bradford across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bradford
Daughter · 1940 · age 16 · b. ~1924 · Washington
★ You are viewing this record
Sibling
Kenneth Bradford
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Bradford
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Bradford
Sibling · 1940 · age 20
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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04343-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fannie D Marken | 56 | Head | 0 | Tennessee |
| 2 | Harry Marken | 24 | Son | 0 | Washington |
| 3 | Margaret J Hamilton | 73 | Head | 0 | Canada |
| 4 | Fred Fisher | 73 | Head | Switchman | Washington |
| 5 | Rosetta Fisher | 33 | Wife | 0 | California |
| 6 | Bessie Fisher | 16 | Daughter | 0 | Washington |
| 7 | Buster Fisher | 12 | Son | 0 | Washington |
| 8 | Freddie Fisher | 7 | Son | 0 | Washington |
| 9 | Ezra G Johnson | 46 | Head | Laborer | Minnesota |
| 10 | Alta Johnson | 44 | Wife | 0 | Minnesota |
| 11 | Irene White | 20 | Daughter | 0 | Minnesota |
| 12 | Bernie White | 25 | Son-in-law | Laborer | Montana |
| 13 | Leslie E White | 0 | Grandson | 0 | Washington |
| 14 | Ida Jewett | 64 | Head | Seamstress | Michigan |
| 15 | Thomas R Hamacher | 53 | Head | 0 | Kansas |
| 16 | Doris M Hamacher | 35 | Wife | 0 | Iowa |
| 17 | Glenn Parker | 16 | Step-son | 0 | So. Dakota |
| 18 | Raymond Parker | 13 | Step-son | 0 | Nebraska |
| 19 | Glenn A Hamacher | 9 | Son | 0 | Washington |
| 20 | Nancy Hamacher | 7 | Daughter | 0 | Washington |
| 21 | Walter Johnson | 38 | Head | Laborer | Washington |
| 22 | Margaret Johnson | 38 | Wife | 0 | Minnesota |
| 23 | Shirley Johnson | 9 | Daughter | 0 | Washington |
| 24 | Joan Johnson | 3 | Daughter | 0 | Washington |
| 25 | Herbert Reese | 57 | Head | Conductor | Illinois |
| 26 | Susan Reese | 46 | Wife | 0 | Minnesota |
| 27 | Horace F Harvey | 74 | Head | Retired Agent | Illinois |
| 28 | Paul H Bradford | 43 | Head | Common Laborer | Illinois |
| 29 | Mable Bradford | 31 | Wife | Kitchen Work | Oklahoma |
| 30 | Harold Bradford | 20 | Son | Common Laborer | Colorado |
| 31 | Mary Bradford THIS PERSON | 16 | Daughter | 0 | Idaho |
| 32 | Betty Bradford | 11 | Daughter | 0 | Washington |
| 33 | Kenneth Bradford | 10 | Son | 0 | Washington |
| 34 | Lloyd Crowder | 50 | Head | Farm Laborer | New York |
| 35 | Jessie Crowder | 51 | Wife | 0 | Oregon |
| 36 | Clara Thristy | 72 | Mother-in-law | 0 | Iowa |
| 37 | Carl R Monroe | 59 | Head | 0 | Michigan |
| 38 | Altauda Monroe | 81 | Wife | 0 | Michigan |
| 39 | Redmond Cosgrove | 62 | Head | Operator | Illinois |
| 40 | Rose Cosgrove | 50 | Wife | 0 | 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)