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John Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · District-Of-Columbia-County, District of Columbia
Our Model Tree links this John Smith across the 1920, 1930 and 1940 US Censuses in District-Of-Columbia-County, District of Columbia (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | District-Of-Columbia-County, District of Columbia |
| Surname | Smith |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Additional Details | |
| Occupation | Musician |
| Industry | Night Club |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 150 |
| Highest Grade | No H 4 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Musician |
| Township / Ward | Washington |
| Est. Birth Year | ~1916 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Smith | Head | — | 35 | ~1905 |
| Samuel Kaneff | Other | — | 29 | ~1911 |
| John Smith | Son | — | 24 | ~1916 |
| Lillie Smith | Spouse | — | 58 | ~1882 |
Census Appearances
1920
None, District …
Son, age 4
None, District of Columbia · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | John J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Michigan |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
None, District …
Son, age 15
None, District of Columbia · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | John J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
District-Of-Columbia-County, District …
Son, age 24
District-Of-Columbia-County, District of Columbia · implied b. ~1916 — 4 household members
| Surname | Smith |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Occupation | Musician |
| Industry | Night Club |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 150 |
| Highest Grade | No H 4 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Smith (~0.60 confidence) and father John Smith (~0.92 confidence) and mother Lillie Smith (~0.92 confidence) and mother Lillie Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.84
Father
John Smith
b. ~1905
Source father
● Household
· direct · ~0.6
Father
John Smith
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Lillie Smith
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Lillie Smith
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Smith
Son · 1940 · age 24 · b. ~1916 · 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-t0627-00563-00317)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Johanna M. Rascher | 60 | Nurse | Nurse | Germany |
| 42 | Burton R. Wilbur | 41 | Head | Adjudicator | D.C. |
| 43 | Hazel H. Wilbur | 36 | Wife | — | Missouri |
| 44 | William B. Wilbur | 9 | Son | — | D.C. |
| 45 | Helen J. Wilbur | 5 | Daughter | — | D.C. |
| 46 | Albert F. Warner | 29 | Head | Bookkeeper | D.C. |
| 47 | Catherine F. Warner | 27 | Wife | — | Virginia |
| 48 | Paul K. Warner | 5 | Son | — | D.C. |
| 49 | Edgar Shaner | 41 | Roomer | Engineer | New Hampshire |
| 50 | Aubrey T. Palmer | 38 | Head | Examiner | Georgia |
| 51 | Adella E. Palmer | 34 | Wife | — | Florida |
| 52 | Carolyn A. Palmer | 3 | Daughter | — | D.C. |
| 53 | J. Sterling Cook | 60 | Roomer | Salesman | Canada-Eng |
| 54 | Amy C. Cook | 64 | Roomer | — | Canada-Eng |
| 55 | William G. Eliot | 43 | Head | Economist | Wisconsin |
| 56 | Alice C. Eliot | 36 | Wife | — | Missouri |
| 57 | Nancy D. Eliot | 5 | Daughter | — | D.C. |
| 58 | Frank C. Eliot | 2 | Son | — | D.C. |
| 59 | Matt L. Matthews | 45 | Head | Service Dept. | South Carolina |
| 60 | Mary L. Matthews | 33 | Wife | — | Virginia |
| 61 | Donald M. Werrick | 37 | Head | Machinist | Pennsylvania |
| 62 | Helen B. Werrick | 39 | Wife | — | Maryland |
| 63 | Donald M. Jr. Werrick | 1 | Son | — | D.C. |
| 64 | John J. Smith | 35 | Head | Brick Mason | Pennsylvania |
| 65 | Lillie M. Smith | 58 | Wife | — | Michigan |
| 66 | John J. Jr. Smith THIS PERSON | 24 | Son | Musician | Pennsylvania |
| 67 | Samuel Kaneff | 29 | Roomer | Proprietor | Pennsylvania |
| 68 | Philip W. Simon | 37 | Head | Lawyer | Ohio |
| 69 | Donna F. Simon | 36 | Wife | — | D.C. |
| 70 | Sonia D. Simon | 7 | Daughter | — | New York |
| 71 | Thomas F. Simon | 3 | Son | — | D.C. |
| 72 | New Ends Block 38 And Begins Block 399 | None | — | — | — |
| 73 | George H. Rutley | 69 | Head | Agent | Canada-Eng |
| 74 | Lillia S. Rutley | 58 | Wife | — | Maryland |
| 75 | Joseph L. Rutley | 37 | Son | Salesman | Maryland |
| 76 | Robert J. Rutley | 23 | Son | Salesman | Maryland |
| 77 | Clarence D. Cade | 45 | Head | Clerk | Alabama |
| 78 | Emily J. Cade | 35 | Wife | — | South Carolina |
| 79 | Clarence D. Jr. Cade | 8 | Son | — | D.C. |
| 80 | Emily B. Cade | 6 | Daughter | — | D.C. |
Pedigree Summary
John
Gen 1 · 4 parents
~0.84
Max depth 4 (1900–1950 window)
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)