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Mary Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Mary Boyd across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents William & Mary — first a daughter (b.~1908), then head of a 2-person household.
Age 32
b. ~1908
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Boyd |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Dept. of Justice |
| Class of Worker | GW |
| Hours Worked | 46 |
| Income (1939) | 236 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Stenographer |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1908 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Boyd | Daughter | — | 32 | ~1908 |
| Lucy Boyd | Head | — | 68 | ~1872 |
Census Appearances
1920
King, Washington
Daughter, age 12
King, Washington · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Maude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Daughter, age 23
King, Washington · implied b. ~1907 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Kentucky |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
King-County, Washington
Daughter, age 32
King-County, Washington · implied b. ~1908 — 2 household members
| Surname | Boyd |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Stenographer |
| Industry | Dept. of Justice |
| Class of Worker | GW |
| Hours Worked | 46 |
| Income (1939) | 236 |
| Highest Grade | H-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 Mary Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Boyd (~0.92 confidence) and mother Mary Boyd (~0.92 confidence) and mother Lucy Boyd (~0.92 confidence) and mother Lucy Boyd (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Boyd
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Mary Boyd
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Lucy Boyd
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Lucy Boyd
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Boyd
Daughter · 1940 · age 32 · b. ~1908 · 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
40 people indexed on this census page (nara:1940:m-t0627-04379-00246)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Richard Mahoney | 3 | Son | — | Washington |
| 42 | Mabel Mcmutry | 44 | Head | — | Kentucky |
| 43 | Robert P. Smith | 31 | Head | Pipe Fitter | New York |
| 44 | Elena Smith | 27 | Wife | Librarian | Washington |
| 45 | Ralph Larreau | 38 | Head | Logger | Kansas |
| 46 | Irene Larreau | 24 | Wife | — | Washington |
| 47 | Larry Larreau | 1 | Son | — | Washington |
| 48 | Adolph Johnson | 68 | Head | Machinist | Sweden |
| 49 | Hilma Johnson | 61 | Wife | — | Sweden |
| 50 | Virginia Johnson | 27 | Daughter | Stenographer | Washington |
| 51 | Isabelle Dick | 71 | Head | — | Scotland |
| 52 | Mabel Q. Cassie | 42 | Daughter | Saleslady | Scotland |
| 53 | Arthur Cassie | 27 | Nephew | Machinist | Scotland |
| 54 | Zetta Cotter | 47 | Head | — | Illinois |
| 55 | William E. Cotter | 18 | Son | — | Illinois |
| 56 | Robert J. Cotter | 15 | Son | — | California |
| 57 | Francis Archambault | 59 | Head | Truck Driver | Minnesota |
| 58 | Louise Archambault | 55 | Wife | — | Ohio |
| 59 | Walter Barking | 43 | Head | Hammer Operator | Minnesota |
| 60 | Maud Barking | 56 | Wife | — | Ohio |
| 61 | Everett Davis | 49 | Head | Porter | Missouri |
| 62 | William Harrison | 53 | Head | Waiter | New Jersey |
| 63 | Haywood Roberts | 29 | Head | Porter | Washington |
| 64 | Ellen Roberts | 24 | Wife | Cook | Idaho |
| 65 | Ronald Saunders | 22 | Head | Cook | Seattle |
| 66 | Irene Saunders | 27 | Wife | Nurse | Seattle |
| 67 | Charles T. Hickey | 50 | Head | Proof Reader | Minnesota |
| 68 | Vera Hickey | 37 | Wife | — | Washington |
| 69 | Henry Drees | 62 | Head | Superintendent | Kansas |
| 70 | Laura Drees | 60 | Wife | — | Oregon |
| 71 | Jesse Morrison | 19 | Piece | — | Washington |
| 72 | Joseph Cassidy | 24 | Head | Truck Driver | Washington |
| 73 | Mildred Cassidy | 21 | Wife | — | Washington |
| 74 | Sophia Shetlak | 63 | Head | — | Canada-Eng |
| 75 | Catherine Shetlak | 21 | Daughter | Cashier | Canada-Eng |
| 76 | Lucy Boyd | 68 | Head | — | Kentucky |
| 77 | Mary A. Boyd THIS PERSON | 32 | Daughter | Stenographer | Colorado |
| 78 | Fernandi Anderson | 53 | Head | — | Finland |
| 79 | Grant Wiley | 31 | Head | Welder | Washington |
| 80 | Norma Wiley | 28 | Wife | Page | North Dakota |
Related Census Records
Pedigree Summary
Mary
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)