MC
Mary Chase — 1940 US Census Record
Linked across censuses1940 United States Federal Census · District-Of-Columbia-County, District of Columbia
Our Model Tree links this Mary Chase across the 1920, 1930 and 1940 US Censuses in District-Of-Columbia-County, District of Columbia (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 12-person household.
Age 50
b. ~1890
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | District-Of-Columbia-County, District of Columbia |
| Surname | Chase |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Washington, D.C. |
| 1935 Residence (County) | District Of Columbia |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Washington Dc |
| Est. Birth Year | ~1890 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jerome Chase | Other | — | 11 | ~1929 |
| Mildred Chase | Daughter | — | 13 | ~1927 |
| Verma Chase | Other | — | 1 | ~1939 |
| Dorothy Chase | Daughter | — | 30 | ~1910 |
| Elaine Chase | Daughter | — | 7 | ~1933 |
| Dorothy Chase | Daughter | — | 5 | ~1935 |
| Mary Chase | Spouse | — | 50 | ~1890 |
| Francis Chase | Daughter | — | 9 | ~1931 |
| Irving Chase | Other | — | ~1940 | |
| James Chase | Head | — | 61 | ~1879 |
| Ellen Chase | Other | — | 4 | ~1936 |
| Ruth Johnson | Daughter | — | 13 | ~1927 |
Census Appearances
1920
District Of …
Spouse, age 26
District Of Columbia, District of Columbia · implied b. ~1894 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Helper |
| Industry | Stationery |
| 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 …
Spouse, age 38
None, District of Columbia · implied b. ~1892 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chase |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| 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 50
District-Of-Columbia-County, District of Columbia · implied b. ~1890 — 12 household members
| Surname | Chase |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Washington, D.C. |
| 1935 Residence (County) | District Of Columbia |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Chase across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Chase
Spouse · 1940 · age 50 · b. ~1890 · 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
40 people indexed on this census page (nara:1940:m-t0627-00559-00573)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lissie S. Harris | 50 | Mother | — | South Carolina |
| 42 | John Harris | 28 | Brother | Laborer | South Carolina |
| 43 | Nellie B. Harris | 25 | Sister | — | South Carolina |
| 44 | Isaac Harris | 22 | Brother | Laborer | South Carolina |
| 45 | James Harris | 21 | Brother | — | South Carolina |
| 46 | Ida M. Harris | 19 | Sister | Maid | South Carolina |
| 47 | Esther Harris | 18 | Sister | Housework | South Carolina |
| 48 | Eves Harris | 17 | Sister | — | South Carolina |
| 49 | Lucille Harris | 4 | Niece | — | South Carolina |
| 50 | Joe L. Kyones|Lyones | 2 | Nephew | — | South Carolina |
| 51 | Ramsey Douglas | 1 | Nephew | — | South Carolina |
| 52 | Ruth Sanders | 1 | Niece | — | District of Columbia |
| 53 | Allie Sanders | 9 | Ward | — | South Carolina |
| 54 | Norman D. Wise | 51 | Head | Laborer | South Carolina |
| 55 | Lillie A. Wise | 45 | Wife | Maid | South Carolina |
| 56 | Augustus Ballard | 28 | Nephew | Laborer | Kansas |
| 57 | Sarah Ballard | 18 | Niece | — | South Carolina |
| 58 | Dale J. Ballard | 1 | Niece | — | District of Columbia |
| 59 | Lula D. Riley | 53 | Head | — | Maryland |
| 60 | Alice Riley | 25 | Daughter | Laborer | District of Columbia |
| 61 | Pearl Riley | 22 | Daughter | — | District of Columbia |
| 62 | Joseph Riley | 16 | Son | — | District of Columbia |
| 63 | Theresa Riley | 10 | Daughter | — | District of Columbia |
| 64 | Lewis Riley | 10 | Grandson | — | District of Columbia |
| 65 | Devon Drummond | 28 | Lodger | Laborer | South Carolina |
| 66 | James M. Chase | 61 | Head | — | Maryland |
| 67 | Mary Chase THIS PERSON | 50 | Wife | — | Maryland |
| 68 | Ruth Johnson | 13 | Daughter | — | District of Columbia |
| 69 | Dorothy D. Chase | 30 | Daughter | — | District of Columbia |
| 70 | Mildred Chase | 13 | Daughter | — | District of Columbia |
| 71 | Jerome Chase | 11 | Grandson | — | District of Columbia |
| 72 | Francis Chase | 9 | Daughter | — | District of Columbia |
| 73 | Elaine Chase | 7 | Daughter | — | District of Columbia |
| 74 | Dorothy Chase | 5 | Daughter | — | District of Columbia |
| 75 | Ellen Chase | 4 | Granddaughter | — | District of Columbia |
| 76 | Verma Chase | 1 | Granddaughter | — | District of Columbia |
| 77 | Irving Jr. Chase | 0 | Grandson | — | District of Columbia |
| 78 | Richard D. Henderson | 56 | Head | Laborer | Louisiana |
| 79 | Addie Henderson | 52 | Wife | — | District of Columbia |
| 80 | Mary Henry | 16 | Ward | — | District of Columbia |
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)