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Mary Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · District-Of-Columbia-County, District of Columbia
Our Model Tree links this Mary Mason across the 1920, 1930 and 1940 US Censuses in District-Of-Columbia-County, District of Columbia (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | District-Of-Columbia-County, District of Columbia |
| Surname | Mason |
| Given Name | Mary L |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Additional Details | |
| Occupation | Indexer |
| Industry | Navy Yard |
| Class of Worker | GW |
| Hours Worked | 39 |
| Income (1939) | 256 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Indexer |
| Township / Ward | Washington |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Margaret Mason | Daughter | — | 16 | ~1924 |
| Ernest Mason | Head | — | 37 | ~1903 |
| Hazel Bowman | Other | — | 16 | ~1924 |
| Mary Mason | Spouse | — | 39 | ~1901 |
Census Appearances
1920
None, District …
Other, age 18
None, District of Columbia · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Maud |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Gen. Housework |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
None, District …
Other, age 28
None, District of Columbia · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Mamie |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | Black |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
District-Of-Columbia-County, District …
Spouse, age 39
District-Of-Columbia-County, District of Columbia · implied b. ~1901 — 4 household members
| Surname | Mason |
| Given Name | Mary L |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Occupation | Indexer |
| Industry | Navy Yard |
| Class of Worker | GW |
| Hours Worked | 39 |
| Income (1939) | 256 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mason
Spouse · 1940 · age 39 · b. ~1901 · District of Columbia
★ 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 — District-Of-Columbia-County, District of Columbia
Open full size
1940 US Federal Census — District-Of-Columbia-County, District of Columbia
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00558-00382)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nellie B Ferrell | 25 | Head | Issue Clerk | Virginia |
| 42 | Cora M Ferrell | 45 | Sister | Power Machine Operator | Maryland |
| 43 | George E Pockendale | 46 | Head | Inspector | D.C. |
| 44 | Bernice D Pockendale | 35 | Wife | — | Virginia |
| 46 | Albert G Jost | 41 | Head | Electrician | D.C. |
| 47 | Iona G Jost | 45 | Wife | — | Virginia |
| 48 | Albert G Jr Jost | 13 | Son | — | D.C. |
| 49 | Charles B Jost | 7 | Son | — | D.C. |
| 50 | Fred E Phillips | 26 | Head | Pharmacist | Louisiana |
| 51 | Helen J Phillips | 26 | Wife | — | Florida |
| 52 | Fred E Jr Phillips | 2 | Son | — | D.C. |
| 53 | Betty Jean Phillips | 0 | Daughter | — | D.C. |
| 54 | Ira F Reese | 24 | Lodger | Policeman | Texas |
| 55 | Joseph A Arceneaux | 29 | Lodger | Clerk-Typist | Louisiana |
| 56 | Carl B Phillips | 32 | Head | Clerk | Louisiana |
| 57 | Eugene H Phillips | 25 | Wife | — | Louisiana |
| 58 | Arlyell M Phillips | 0 | Daughter | — | D.C. |
| 59 | Ernest M Mason | 37 | Head | Bus Driver | D.C. |
| 60 | Mary L Mason THIS PERSON | 39 | Wife | Indexer | Maryland |
| 61 | Margaret E Mason | 16 | Daughter | — | D.C. |
| 62 | Hazel V Bowman | 16 | Niece | — | D.C. |
| 63 | John M Tucker | 29 | Head | Clerk-Service | Georgia |
| 64 | Mary F. B Tucker | 36 | Wife | Telegraph Operator | Pennsylvania |
| 65 | Howard T Rudolph | 36 | Head | Sales Clerk | Maryland |
| 66 | Caroline H Rudolph | 33 | Wife | Addressograph | Virginia |
| 67 | Elizabeth A Rudolph | 2 | Daughter | — | D.C. |
| 68 | Carole F Rudolph | 0 | Daughter | — | D.C. |
| 69 | Wm W Cutler | 38 | Head | Salesman | D.C. |
| 70 | Margaret B Cutler | 33 | Wife | — | D.C. |
| 71 | Catherine N Cutler | 13 | Daughter | — | D.C. |
| 72 | George M Cutler | 6 | Son | — | D.C. |
| 73 | Margot J Cutler | 1 | Daughter | — | D.C. |
| 74 | Herbert M Lewis | 37 | Head | Bus Operator | Virginia |
| 75 | Susie L Anderson | 40 | Lodger | Marker | Virginia |
| 76 | Valentino Martens | 65 | Head | Musician | Italy |
| 77 | Jennie O Martens | 28 | Daughter | Clerk Typist | Virginia |
| 78 | Austin D Burgess | 56 | Head | Clerk | D.C. |
| 79 | Clara R Burgess | 54 | Wife | — | Virginia |
| 80 | Calhoun H Burgess | 28 | Son | Salesman | Colorado |
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)