MR
Mary Richardson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Richardson across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Richardson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Perry Twp |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Teacher |
| Industry | Grade School |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1120 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Teacher |
| Township / Ward | Perry Twp |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Richardson | Daughter | — | 30 | ~1910 |
| William Richardson | Head | — | 72 | ~1868 |
| Alice Richardson | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Marion, Indiana
Daughter, age 10
Marion, Indiana · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Richardson |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 20
Marion, Indiana · implied b. ~1910 — 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 | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 30
Marion-County, Indiana · implied b. ~1910 — 3 household members
| Surname | Richardson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Perry Twp |
| 1935 Residence (County) | Marion |
| Occupation | Teacher |
| Industry | Grade School |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1120 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 William Richardson (~0.92 confidence) and father William Richardson (~0.92 confidence) and mother Alice Richardson (~0.92 confidence) and mother Alice Richardson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Richardson
b. ~1869
Source father
● Household
· direct · ~0.92
Father
William Richardson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Alice Richardson
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Alice Richardson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Richardson
Daughter · 1940 · age 30 · b. ~1910 · Indiana
★ 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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01075-00794)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul Dickson | 20 | Son in Law | Roofer | Indiana |
| 42 | Walter Dickson | 60 | Lodger | Operator | Indiana |
| 43 | Pearl Dickson | 58 | Lodger | Seamstress | Indiana |
| 44 | Charles Jones | 57 | Head | Helper | Louisiana |
| 45 | Hallett Johnson | 27 | Hired Hand | Helper | Kentucky |
| 46 | Wilbur Wilson | 29 | Hired Hand | Helper | Tennessee |
| 47 | Arthur Edward | 20 | Hired Hand | Helper | Kentucky |
| 48 | William Richardson | 72 | Head | Farmer | Indiana |
| 49 | Alice Richardson | 57 | Wife | — | Alabama |
| 50 | Mary Richardson THIS PERSON | 30 | Daughter | Teacher | Indiana |
| 51 | Ward L Isabel | 38 | Head | Agent | Indiana |
| 52 | Leone M Isabel | 39 | Wife | — | Indiana |
| 53 | Jacqueline L Isabel | 13 | Daughter | — | Indiana |
| 54 | Mirna L Isabel | 10 | Daughter | — | Indiana |
| 55 | George W Skirm | 50 | Head | Traveling Salesman | New Jersey |
| 56 | Elizabeth Skirm | 50 | Wife | — | New Jersey |
| 57 | Alta Skirm | 22 | Daughter | — | New Jersey |
| 58 | Robert Skirm | 20 | Son | — | New Jersey |
| 59 | Cameron Hollsworth | 34 | Head | Knitter | Minnesota |
| 60 | Agnes Hollsworth | 29 | Wife | — | Ohio |
| 61 | Margaret Hollsworth | 9 | Daughter | — | Indiana |
| 62 | Dolores Hollsworth | 8 | Daughter | — | Indiana |
| 63 | Shirley Ann Hollsworth | 6 | Daughter | — | Indiana |
| 64 | Robert Hollsworth | 4 | Son | — | Indiana |
| 65 | Mary Marie Hollsworth | 3 | Daughter | — | Indiana |
| 66 | Raymond B Smith | 44 | Head | Plaster | Indiana |
| 67 | Wilmina Smith | 43 | Wife | — | Indiana |
| 68 | Elmer E Smith | 19 | Son | Plaster Helper | Indiana |
| 69 | Everett L Smith | 18 | Son | Plaster Helper | Indiana |
| 70 | Virgil R Smith | 16 | Son | — | Indiana |
| 71 | Vivian L Smith | 15 | Daughter | — | Indiana |
| 72 | Elizabeth Clark | 68 | Mother-in-law | — | Indiana |
| 73 | Finn B Purefield | 37 | Head | — | Indiana |
| 74 | Richard L Purefield | 16 | Son | — | Indiana |
| 75 | June R Purefield | 14 | Daughter | — | Indiana |
| 76 | Howard E Purefield | 9 | Son | — | Indiana |
| 77 | Janite B Purefield | 5 | Daughter | — | Indiana |
| 78 | Plosa B Smith | 70 | Mother | — | Indiana |
| 79 | Mary Vetter | 63 | Head | — | Germany |
| 80 | Richard Vetter | 33 | Son | Rubber Worker | Indiana |
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)