MR
Mary Richardson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Richardson across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents Walter & Herbert — first a daughter (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Richardson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | school teacher |
| Industry | Y.M.C.A. |
| Class of Worker | PW |
| Income (1939) | 350 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Teacher |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1914 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Richardson | Daughter | — | 26 | ~1914 |
| Walter Richardson | Head | — | 52 | ~1888 |
| Helen Smith | Other | — | 52 | ~1888 |
| Harold Richardson | Son | — | 25 | ~1915 |
| Marion Richardson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Wayne, Michigan
Daughter, age 5
Wayne, Michigan · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Richardson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Daughter, age 16
Wayne, Michigan · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Richardson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Daughter, age 26
Wayne-County, Michigan · implied b. ~1914 — 5 household members
| Surname | Richardson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | school teacher |
| Industry | Y.M.C.A. |
| Class of Worker | PW |
| Income (1939) | 350 |
| Highest Grade | C 2 |
| 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 Richardson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Walter Richardson (~0.92 confidence) and father Herbert Richardson (~0.92 confidence) and father Walter Richardson (~0.92 confidence) and mother Marion Richardson (~0.92 confidence) and mother Marion Richardson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Walter Richardson
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Herbert Richardson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Walter Richardson
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Marion Richardson
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Marion Richardson
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Richardson
Daughter · 1940 · age 26 · b. ~1914 · Michigan
★ You are viewing this record
Sibling
Harold Richardson
Sibling · 1940 · age 25
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
23 people indexed on this census page (nara:1940:m-t0627-01849-00435)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald Weitzel | 12 | Lodger | — | Michigan |
| 2 | Harry Renshaw | 53 | Head | Inspector | Michigan |
| 3 | Edith Renshaw | 53 | Wife | — | Michigan |
| 4 | Walter Richardson | 52 | Head | Chief Inspector | Michigan |
| 5 | Marion Richardson | 49 | Wife | — | Michigan |
| 6 | Mary Richardson THIS PERSON | 26 | Daughter | School Teacher | Michigan |
| 7 | Harold Richardson | 25 | Son | Automotive Engineer | Michigan |
| 8 | Helen Smith | 52 | Lodger | — | Illinois |
| 9 | Walter M. Higgins | 44 | Head | Building Supervisor | Michigan |
| 10 | Geraldine A. Higgins | 32 | Sister | Stenographer | Michigan |
| 11 | Mary E. Higgins | 75 | Mother | — | England |
| 12 | Harold J. Doyle | 45 | Head | Traffic Manager | Michigan |
| 13 | Bessie M. Doyle | 44 | Wife | — | Michigan |
| 14 | Harold Jr. Doyle | 20 | Son | Checker | Michigan |
| 15 | Donna J. Doyle | 16 | Daughter | — | Michigan |
| 16 | Denise M. Doyle | 16 | Daughter | — | Michigan |
| 17 | Marilyn S. Doyle | 7 | Daughter | — | Michigan |
| 18 | Andrew T. Phillips | 49 | Lodger | Constable | Michigan |
| 19 | Wendell Lutfin | 20 | Son | Kitchen Police | Michigan |
| 20 | David Lindsay | 10 | Son | — | Indiana |
| 21 | Clara Gilbert | 59 | Partner | — | Michigan |
| 22 | William Garwin | 11 | Son | — | Michigan |
| 23 | Donald Van Dusen | 29 | Lodger | Sailor | Ohio |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 5 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)