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Lois Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · District-Of-Columbia-County, District of Columbia
Our Model Tree links this Lois Davis across the 1930 and 1940 US Censuses in District-Of-Columbia-County, District of Columbia (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: Dist of Col
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | District-Of-Columbia-County, District of Columbia |
| Surname | Davis |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Dist of Col |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birthplace (normalized) | dist of col |
| Township / Ward | Washington |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lois | Age | Birth yr |
|---|---|---|---|---|
| Carolyn Davis | Daughter | — | 3 | ~1937 |
| Phillip Davis | Son | — | 5 | ~1935 |
| Thelma Davis | Spouse | — | 34 | ~1906 |
| Muriel Davis | Daughter | — | 11 | ~1929 |
| Ellsworth Davis | Head | — | 35 | ~1905 |
| Kenneth Davis | Son | — | ~1940 | |
| Lois Davis | Daughter | — | 12 | ~1928 |
| Ellsworth Davis | Son | — | 10 | ~1930 |
| Ronald Davis | Son | — | 7 | ~1933 |
| Lloyd Davis | Other | — | 38 | ~1902 |
Census Appearances
1930
Washington, District …
Other, age 2
Washington, District of Columbia · implied b. ~1928 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Lois |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Dist of Col |
| Father's Birthplace | Dist of Col |
| Mother's Birthplace | Dist of Col |
| Occupation | none |
| Birthplace (normalized) | dist of col |
1940
District-Of-Columbia-County, District …
Daughter, age 12
District-Of-Columbia-County, District of Columbia · implied b. ~1928 — 10 household members
| Surname | Davis |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Dist of Col |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birthplace (normalized) | dist of col |
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 Lois Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Davis
Daughter · 1940 · age 12 · b. ~1928 · District of Columbia
★ You are viewing this record
Sibling
Carolyn Davis
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Davis
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Davis
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Davis
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellsworth Davis
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Muriel Davis
Sibling · 1940 · age 11
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 — 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-t0627-00564-00574)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fred Thomas King | 30 | Uncle | Mechanic | West Va |
| 42 | Harry O. Petersen | 39 | Head | Special Delivery | Pennsylvania |
| 43 | Margaret Petersen | 38 | Wife | Binder Operator | Maryland |
| 44 | Harry Petersen | 19 | Son | Clerk | Pennsylvania |
| 45 | Margaret Petersen | 17 | Daughter | — | Pennsylvania |
| 46 | David Harrington | 84 | Head | — | Dist of Col |
| 47 | John A. Harrington | 44 | Son | Clerk | Dist of Col |
| 48 | Grover, Julia Harrington | 39 | Daughter | Typist | Dist of Col |
| 49 | Annie T. Murphy | 60 | Head | — | Ireland |
| 50 | Margaret Jones | 34 | Daughter | Feeder | Dist of Col |
| 51 | Anna May Jones | 4 | Granddaughter | — | Dist of Col |
| 52 | Daniel Flanagan | 34 | Head | Photographer | Dist of Col |
| 53 | Frances Flanagan | 33 | Wife | — | Maryland |
| 54 | Margaret Flanagan | 11 | Daughter | — | Dist of Col |
| 55 | Daniel Jr. Flanagan | 6 | Son | — | Dist of Col |
| 56 | Patricia Flanagan | 1 | Daughter | — | Dist of Col |
| 57 | Clorence Betts | 51 | Head | Gardener | Dist of Col |
| 58 | Dora Betts | 51 | Wife | — | Maryland |
| 59 | Joseph Betts | 22 | Son | Plasterer | Dist of Col |
| 60 | Lloyd Betts | 20 | Son | New Worker | Dist of Col |
| 61 | End Of Block 18 Beginning Block 20 | None | — | — | — |
| 62 | Joseph S. Jones | 52 | Head | Cook | Maryland |
| 63 | Caroline Jones | 54 | Wife | — | Maryland |
| 64 | Carolyn Jones | 15 | Daughter | — | Maryland |
| 65 | William Young | 39 | Head | Cook | Maryland |
| 66 | Edna Young | 27 | Wife | — | West Va |
| 67 | Albert Young | 6 | Son | — | Dist of Col |
| 68 | Theodore Young | 5 | Son | — | Maryland |
| 69 | Ellsworth Davis | 35 | Head | Elevator Operator | Dist of Col |
| 70 | Thelma Davis | 34 | Wife | — | Dist of Col |
| 71 | Lois Davis THIS PERSON | 12 | Daughter | — | Dist of Col |
| 72 | Muriel Davis | 11 | Daughter | — | Dist of Col |
| 73 | Ellsworth Davis | 10 | Son | — | Dist of Col |
| 74 | Ronald Davis | 7 | Son | — | Dist of Col |
| 75 | Phillip Davis | 5 | Son | — | Dist of Col |
| 76 | Carolyn Davis | 3 | Daughter | — | Dist of Col |
| 77 | Kenneth Davis | 0 | Son | — | Dist of Col |
| 78 | Lloyd Davis | 38 | Brother | Laborer | Dist of Col |
| 79 | John F. Mapp | 55 | Head | Lumber Packer | Georgia |
| 80 | Lilla Mapp | 53 | Wife | — | Georgia |
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)