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Mary Maxwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Maxwell across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Elizabeth & Alexander — first a daughter (b.~1915), then head of a 2-person household.
Age 25
b. ~1915
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Maxwell |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Secretary |
| Industry | Purchas Dept |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1860 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Secretary |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Elizabeth Maxwell | Head | — | 66 | ~1874 |
| Mary Maxwell | Daughter | — | 25 | ~1915 |
Census Appearances
1920
San Francisco, …
Daughter, age 5
San Francisco, California · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maxwell |
| Given Name | May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Mother Tongue | English |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Daughter, age 15
San Francisco, California · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maxwell |
| Given Name | May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 25
San-Francisco-County, California · implied b. ~1915 — 2 household members
| Surname | Maxwell |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Secretary |
| Industry | Purchas Dept |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1860 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Maxwell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Maxwell (~0.92 confidence) and father Alexander Maxwell (~0.92 confidence) and mother Jean Maxwell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Maxwell
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Alexander Maxwell
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Jean Maxwell
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Maxwell
Daughter · 1940 · age 25 · b. ~1915 · California
★ 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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00320-00151)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Olson | 67 | Head | Plumber | Berlin |
| 2 | Lottie Olson | 56 | Wife | — | Illinois |
| 3 | Norman Olson | 28 | Son | Warehouse Clerk | Illinois |
| 4 | Anna Wendel | 57 | Head | — | Germany |
| 5 | Franz Hardenberg | 20 | Son | — | Germany |
| 6 | Johanna Hardenberg | 56 | Daughter | — | California |
| 7 | Elizabeth Maxwell | 66 | Head | — | Ireland |
| 8 | Mary E. Maxwell THIS PERSON | 25 | Daughter | Secretary | California |
| 9 | George H. Stevens | 50 | Head | Shovel Oiler | New York |
| 10 | Minnie Stevens | 54 | Wife | — | Wisconsin |
| 11 | Emma Borchardt | 62 | Sister-in-law | Teacher | Wisconsin |
| 12 | Robert Eaton | 21 | Head | Gardner | Illinois |
| 13 | Irene Eaton | 17 | Wife | — | California |
| 14 | Catherine Joseph | 73 | Head | — | Missouri |
| 15 | Harry Joseph | 42 | Son | — | Kansas |
| 16 | Albert Joseph | 39 | Son | — | Washington |
| 17 | Ralph Joseph | 37 | Son | Broker | Washington |
| 18 | Walter Joseph | 31 | Son | Order Clerk | Washington |
| 19 | Nora Norton | 69 | Head | — | Ireland |
| 20 | Patrick Norton | 64 | Brother | Store Keeper | Ireland |
| 21 | William Norton | 35 | Nephew | Laborer | California |
| 22 | Adolph Kruse | 55 | Head | — | Germany |
| 23 | Margaret Beggs | 48 | Head | — | Ireland |
| 24 | Catherine Beggs | 19 | Daughter | — | California |
| 25 | James Concannon | 26 | Cousin | Clerk | Maine |
| 26 | Michael Walsh | 34 | Brother | Bar Tender | Ireland |
| 27 | Alex Corvick | 56 | Head | — | California |
| 28 | Craig Corvick | 29 | Son | — | California |
| 29 | Anthony Woolin | 49 | Head | Cashier | California |
| 30 | Dolores Woolin | 45 | Wife | — | Nebraska |
| 31 | Anthony Jr. Woolin | 19 | Son | — | California |
| 32 | Genevieve Woolin | 16 | Daughter | — | California |
| 33 | Brian Woolin | 14 | Son | — | California |
| 34 | Cornelius Beggs | 70 | Head | — | California |
| 35 | Hannah Beggs | 68 | Wife | — | California |
| 36 | Mary Sweeney | 80 | Lodger | — | Massachusetts |
| 37 | Catherine Sweeney | 77 | Lodger | — | Massachusetts |
| 38 | Wallace Walker | 53 | Head | Director | Nevada |
| 39 | Elizabeth Walker | 63 | Wife | — | California |
| 40 | William J. Walker | 16 | Son | — | California |
Pedigree Summary
Mary
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)