MS
Mary Spencer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pierce-County, Washington
Our Model Tree links this Mary Spencer across the 1920, 1930 and 1940 US Censuses in Pierce-County, Washington (XGBoost, ~Confirmed), with identified parents Eleanor & Eleanor — first a daughter (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Female
Daughter
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pierce-County, Washington |
| Surname | Spencer |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Dieringer E.P. |
| 1935 Residence (County) | Pierce |
| Additional Details | |
| Occupation | Student Nurse |
| Industry | Marine Hospital |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 120 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Student Nurse |
| Township / Ward | Dieringer Ep |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Spencer | Daughter | — | 27 | ~1913 |
| Thomas Spencer | Head | — | 60 | ~1880 |
| Larry Spencer | Son | — | 18 | ~1922 |
| Charles Spencer | Son | — | 15 | ~1925 |
| George Spencer | Son | — | 21 | ~1919 |
| Eleanor Spencer | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Pierce, Washington
Daughter, age 6
Pierce, Washington · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | England |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Pierce, Washington
Daughter, age 17
Pierce, Washington · implied b. ~1913 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | Mary D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | England |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Pierce-County, Washington
Daughter, age 27
Pierce-County, Washington · implied b. ~1913 — 6 household members
| Surname | Spencer |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Dieringer E.P. |
| 1935 Residence (County) | Pierce |
| Occupation | Student Nurse |
| Industry | Marine Hospital |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 120 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Spencer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Eleanor Spencer (~0.92 confidence) and mother Eleanor Spencer (~0.92 confidence) and father Thos Spencer (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Eleanor Spencer
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Eleanor Spencer
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Thos Spencer
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Spencer
Daughter · 1940 · age 27 · b. ~1913 · Washington
★ You are viewing this record
Sibling
Larry Spencer
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Spencer
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Spencer
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 — Pierce-County, Washington
Open full size
1940 US Federal Census — Pierce-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04355-00285)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruth M Wilson | 14 | Daughter | — | Michigan |
| 42 | John G Erickson | 72 | Head | Caretaker | Finland |
| 43 | Charles Corfield | 34 | Head | Electrician | Utah |
| 44 | Pearl Corfield | 32 | Wife | — | Wisconsin |
| 45 | Joann Corfield | 5 | Daughter | — | Washington |
| 46 | Digna Corfield | 3 | Daughter | — | Washington |
| 47 | Allen B Boatman | 41 | Head | Electrician | Washington |
| 48 | Edith S Boatman | 39 | Wife | — | Washington |
| 49 | Harry O Barker | 31 | Head | Clerk | Kansas |
| 50 | Lettie B Barker | 31 | Wife | — | Washington |
| 51 | Mamie J Barker | 19 | Daughter | — | Washington |
| 52 | Thomas J Spencer | 60 | Head | Electrician | England |
| 53 | Eleanor K Spencer | 60 | Wife | — | Colorado |
| 54 | Mary I Spencer THIS PERSON | 27 | Daughter | Student Nurse | Washington |
| 55 | George W Spencer | 21 | Son | — | Washington |
| 56 | Larry J Spencer | 18 | Son | — | Washington |
| 57 | Charles M Spencer | 15 | Son | — | Washington |
| 58 | Alfred S Harmon | 59 | Head | Machinist | Canada |
| 59 | Gladys M Harmon | 52 | Wife | — | So Dakota |
| 60 | Arthur L Harmon | 14 | Daughter | — | Washington |
| 61 | Arthur L Molost | 55 | Head | Electrician | Minnesota |
| 62 | Ethel W Molost | 49 | Wife | — | England |
| 63 | Nancy M Molost | 25 | Daughter | Saleslady | Washington |
| 64 | Bessie Molost | 24 | Daughter | Saleslady | Washington |
| 65 | Dolly L Molost | 6 | Daughter | — | Washington |
| 66 | Ralph J Wright | 57 | Head | Electrician | Minnesota |
| 67 | Margaret A Wright | 51 | Wife | — | No Dakota |
| 68 | Walter M Moreland | 32 | Head | Electrician | Ohio |
| 69 | Eva B Moreland | 29 | Wife | — | Colorado |
| 70 | Kenneth W Moreland | 8 | Son | — | Washington |
| 71 | David J Moreland | 3 | Son | — | Washington |
| 72 | Alvin L Davis | 36 | Head | Electrician | Oregon |
| 73 | Lula M Davis | 36 | Wife | — | Washington |
| 74 | Ione G Davis | 13 | Daughter | — | Washington |
| 75 | William H Lufkin | 55 | Head | Janitor | Minnesota |
| 76 | Molly Lufkin | 44 | Wife | — | Washington |
| 77 | Howard E Lufkin | 23 | Son | Farm Labor | Alaska |
| 78 | Robert H Lufkin | 21 | Son | — | Washington |
| 79 | Walter W Lufkin | 20 | Son | — | Washington |
| 80 | James S Bruce | 32 | Head | Partner | Washington |
Related Census Records
Pedigree Summary
Mary + 3 siblings
Gen 1 · 3 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)