MM
Mary Maxwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this Mary Maxwell across the 1920, 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | Maxwell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Oakland |
| Additional Details | |
| Occupation | Office work |
| Industry | Insurance office |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 780 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Office Work |
| Township / Ward | Birmingham City |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Maxwell | Daughter | — | 31 | ~1909 |
| William Maxwell | Head | — | 75 | ~1865 |
| Jane Maxwell | Other | — | 70 | ~1870 |
| Olive Maxwell | Daughter | — | 33 | ~1907 |
Census Appearances
1920
Oakland, Michigan
Daughter, age 11
Oakland, Michigan · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maxwell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Oakland, Michigan
Daughter, age 21
Oakland, Michigan · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maxwell |
| Given Name | Mary Jean |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Real Estate |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Oakland-County, Michigan
Daughter, age 31
Oakland-County, Michigan · implied b. ~1909 — 4 household members
| Surname | Maxwell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Oakland |
| Occupation | Office work |
| Industry | Insurance office |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 780 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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: father William Maxwell (~0.92 confidence) and father William Maxwell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Maxwell
b. ~1865
Source father
● Household
· direct · ~0.92
Father
William Maxwell
b. ~1870
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Maxwell
Daughter · 1940 · age 31 · b. ~1909 · Michigan
★ You are viewing this record
Sibling
Olive Maxwell
Sibling · 1940 · age 33
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 — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01798-00731)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William J. Maxwell | 75 | Head | — | Eire |
| 2 | Olive Maxwell | 33 | Daughter | School Teacher | Michigan |
| 3 | Mary Maxwell THIS PERSON | 31 | Daughter | Office Work | Michigan |
| 4 | Jane Maxwell | 70 | Sister | — | Eire |
| 5 | Isabel Foreman | 50 | Head | Teacher | Michigan |
| 6 | Mabel G. Brown | 51 | Lodger | Teacher | Michigan |
| 7 | Madeline M. Fredricks | 55 | Lodger | Teacher | Michigan |
| 8 | Grabelle Brennan | 22 | Head | Typist | Illinois |
| 9 | Edmund Brennan | 26 | Brother | Attendant | Illinois |
| 10 | Helen W. Neff | 47 | Head | Music Teacher | Ohio |
| 11 | Arthur Neff | 19 | Son | — | New York |
| 12 | Mary Ann Neff | 18 | Daughter | — | Michigan |
| 13 | Margaret P. Champney | 43 | Head | Publicity Assistant | Michigan |
| 14 | Dorrell O. Champney | 12 | Son | — | Michigan |
| 15 | Carol Mary Champney | 10 | Daughter | — | Michigan |
| 16 | Martin Groves | 63 | Head | — | Michigan |
| 17 | Anna Groves | 61 | Wife | — | Michigan |
| 18 | Robert R. Allen | 53 | Head | Real Estate Valuator | New York |
| 19 | Blanche H. Allen | 44 | Wife | — | Michigan |
| 20 | Thomas R. Allen | 17 | Son | — | Michigan |
| 21 | Richard H. Allen | 13 | Son | — | Michigan |
| 22 | Harry G. Tremper | 45 | Head | Salesman | Illinois |
| 23 | Gertrude Tremper | 41 | Wife | — | Illinois |
| 24 | Jane Lee Tremper | 19 | Daughter | — | Illinois |
| 25 | Trescott Henshaw | 48 | Head | Automotive Draftsman | New York |
| 26 | Mildred Henshaw | 43 | Wife | — | Canada-English |
| 27 | Marjorie Henshaw | 12 | Daughter | — | Michigan |
| 28 | Elizabeth Henshaw | 9 | Daughter | — | Michigan |
| 29 | Myrtle T. Pratt | 48 | Sister-in-law | Registered Nurse | Canada-English |
| 30 | Henry O. Wagner | 47 | Head | Salesman | Kentucky |
| 31 | Sina Wagner | 40 | Wife | — | Michigan |
| 32 | Jean Wagner | 16 | Daughter | — | Michigan |
| 33 | Richard Wagner | 5 | Son | — | Michigan |
| 34 | Clarence P. Davey | 42 | Head | Teacher | Michigan |
| 35 | Ellen C. Davey | 43 | Wife | — | Michigan |
| 36 | Edward B. Davey | 11 | Son | — | Michigan |
| 37 | Marilyn L. Davey | 9 | Daughter | — | Michigan |
| 38 | Orma J. White | 37 | Head | Business Mgr. | Michigan |
| 39 | Bertha H. White | 70 | Mother | — | Michigan |
| 40 | Fenton J. Watkins | 54 | Head | Manager | Michigan |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 2 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)