JW
John Warren — 1940 US Census Record
Linked across censuses1940 United States Federal Census · District-Of-Columbia-County, District of Columbia
Our Model Tree links this John Warren across the 1920, 1930 and 1940 US Censuses in District-Of-Columbia-County, District of Columbia (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 7-person household.
Age 72
b. ~1868
Male
Head
Born: Virginia
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | District-Of-Columbia-County, District of Columbia |
| Surname | Warren |
| Given Name | John G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Virginia |
| 1935 Residence (City) | Washington, D.C. |
| 1935 Residence (County) | District Of Columbia |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Washington Dc |
| Est. Birth Year | ~1868 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Warren | Daughter | — | 30 | ~1910 |
| Emma Willmer | Daughter | — | 33 | ~1907 |
| Nancy Doherty | Daughter | — | 34 | ~1906 |
| John Warren | Head | — | 72 | ~1868 |
| John Doherty | Other | — | 3 | ~1937 |
| John Doherty | Other | — | 36 | ~1904 |
| Charles Warren | Son | — | 42 | ~1898 |
Census Appearances
1920
X, District …
Other, age 58
X, District of Columbia · implied b. ~1862 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Warren |
| Given Name | Jno |
| Relationship to Head | Father-in-law |
| Sex | M |
| Color / Race | Black |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Virginia |
| Naturalization Status | Naturalized |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
None, District …
Head, age 66
None, District of Columbia · implied b. ~1864 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Warren |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Virginia |
| Age at First Marriage | 22 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Butler |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | No |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
District-Of-Columbia-County, District …
Head, age 72
District-Of-Columbia-County, District of Columbia · implied b. ~1868 — 7 household members
| Surname | Warren |
| Given Name | John G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Virginia |
| 1935 Residence (City) | Washington, D.C. |
| 1935 Residence (County) | District Of Columbia |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 John Warren across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Warren
Head · 1940 · age 72 · b. ~1868 · District of Columbia
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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 — 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-t0627-00559-00736)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bessie Clark | 66 | Head | — | Indiana |
| 2 | Maxine Sturdevant | 23 | Lodger | Stenographer | Indiana |
| 3 | Russell Johnson | 29 | Lodger | Restaurant Manager | South Dakota |
| 4 | Ruth A Johnson | 39 | Lodger | — | Wisconsin |
| 5 | Raymond C Finor | 40 | Head | Manuscript Salesman | Washington, D.C. |
| 6 | Florence E Finor | 33 | Wife | — | Washington, D.C. |
| 7 | Raymond N Finor | 6 | Son | — | Maryland |
| 8 | Nancy L Finor | 3 | Daughter | — | Maryland |
| 9 | James A Swann | 42 | Wife head | Chauffeur | England |
| 10 | Jane Swann | 42 | Wife | — | Delaware |
| 11 | Margaret Foster | 69 | Mother-in-law | — | Ireland |
| 12 | Gisinto Piedi | 58 | Head | Produce Dealer | Italy |
| 13 | Samara Piedi | 25 | Daughter | Clerk | Washington, D.C. |
| 14 | Gisinto Middioni | 41 | Son-in-law | Produce Dealer | Washington, D.C. |
| 15 | Anita Middioni | 30 | Daughter | — | Washington, D.C. |
| 16 | Richard Middioni | 7 | Grandson | — | Washington, D.C. |
| 17 | Richard Middioni | 3 | Grandson | — | Washington, D.C. |
| 18 | Agnes Pierri | 63 | Wife | — | Italy |
| 19 | Andrew J. Dr. Betz | 36 | Head | Private Doctor | Washington, D.C. |
| 20 | Elizabeth Betz | 36 | Wife | — | Washington, D.C. |
| 21 | Thomas Betz | 8 | Son | — | Tennessee |
| 22 | Betz | 6 | Son | — | Washington, D.C. |
| 23 | Betz | 5 | Daughter | — | Washington, D.C. |
| 24 | John Betz | 2 | Son | — | Washington, D.C. |
| 25 | Betz | 1 | Son | — | Washington, D.C. |
| 26 | Mary Zalewski | 20 | Maid | Maid | Virginia |
| 27 | John G Warren THIS PERSON | 72 | Head | — | Virginia |
| 28 | Charles Warren | 42 | Son | Machine Operator | Washington, D.C. |
| 29 | Marjorie Warren | 30 | Daughter | — | Washington, D.C. |
| 30 | John Doherty | 36 | Son-in-law | Burner Salesman | England |
| 31 | Nancy V Doherty | 34 | Daughter | Typist | Washington, D.C. |
| 32 | John W Doherty | 3 | Grandson | — | Washington, D.C. |
| 33 | Emma Willmer | 33 | Daughter | — | Washington, D.C. |
| 34 | Helen Ferguson | 52 | Head | Senior Clerk | Washington, D.C. |
| 35 | Marian Ferguson | 50 | Sister | Clerk-Stenographer | Washington, D.C. |
| 36 | Mary E Ferguson | 78 | Mother | — | Maryland |
| 37 | Hattie M Luyton | 63 | Head | — | Virginia |
| 38 | Minnie H Luyton | 58 | Sister | Store Clerk | Virginia |
| 39 | Albert L Berry | 76 | Lodger | — | Maryland |
| 40 | James Berry | 74 | Lodger | — | Maryland |
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)