MD
Mary Douglas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Douglas across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 8-person household.
Age 43
b. ~1897
Female
Spouse
Born: Georgia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Douglas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1897 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Willa Douglas | Daughter | — | 11 | ~1929 |
| William Douglas | Head | — | 45 | ~1895 |
| Joseph Douglas | Son | — | 3 | ~1937 |
| Robert Douglas | Son | — | 5 | ~1935 |
| Freddie Douglas | Son | — | 1 | ~1939 |
| William Douglas | Son | — | 7 | ~1933 |
| Benjamin Douglas | Son | — | 5 | ~1935 |
| Mary Douglas | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Marion, Indiana
Spouse, age 23
Marion, Indiana · implied b. ~1897 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Mulatto |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1930
Marion, Indiana
Spouse, age 31
Marion, Indiana · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Georgia |
| Age at First Marriage | 17 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Marion-County, Indiana
Spouse, age 43
Marion-County, Indiana · implied b. ~1897 — 8 household members
| Surname | Douglas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Douglas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Douglas
Spouse · 1940 · age 43 · b. ~1897 · Indiana
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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
20 people indexed on this census page (nara:1940:m-t0627-01124-00069)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Birdie Williams | 44 | lodger | Servant | Kentucky |
| 42 | Ervin Grimes | 52 | Head | Night Porter | Tennessee |
| 43 | Sadie Grimes | 40 | Wife | Day Worker | Tennessee |
| 44 | Albert Stevenson | 42 | Head | Laborer | Kentucky |
| 45 | Emma Stevenson | 29 | Wife | — | Tennessee |
| 46 | Robert Bank | 32 | Head | Laborer | Georgia |
| 47 | Rebecca Bank | 30 | Wife | Proprietor | Texas |
| 48 | Juanita Bank | 14 | Daughter | — | Indiana |
| 49 | Robert Jr Bank | 8 | Son | — | Indiana |
| 50 | Louise Caldwell | 50 | Mother | — | Missouri |
| 51 | Charles Henry Allen | 43 | Head | Pullman Porter | Kentucky |
| 52 | Sarah Allen | 39 | Wife | Day Worker | Kentucky |
| 53 | William Douglas | 45 | Head | Laborer | Georgia |
| 54 | Mary Douglas THIS PERSON | 43 | Wife | — | Georgia |
| 55 | Willa M. Douglas | 11 | Daughter | — | Indiana |
| 56 | William D. Douglas | 7 | Son | — | Indiana |
| 57 | Robert Douglas | 5 | Son | — | Indiana |
| 58 | Benjamin Douglas | 5 | Son | — | Indiana |
| 59 | Joseph C. Douglas | 3 | Son | — | Indiana |
| 60 | Freddie M. Douglas | 1 | Son | — | Indiana |
Related Census Records
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)