JL
John Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Lewis across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents James — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Lewis |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle city |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Promotion Man |
| Industry | Wholesale News Agency |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1700 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Promotion Man |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lewis | Head | — | 30 | ~1910 |
| Gerald Lewis | Son | — | 2 | ~1938 |
| Maxine Lewis | Spouse | — | 24 | ~1916 |
Census Appearances
1920
King, Washington
Son, age 10
King, Washington · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 20
King, Washington · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Agent |
| Industry | Magazine Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Head, age 30
King-County, Washington · implied b. ~1910 — 3 household members
| Surname | Lewis |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle city |
| 1935 Residence (County) | King |
| Occupation | Promotion Man |
| Industry | Wholesale News Agency |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1700 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Lewis (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Lewis
b. ~1874
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Lewis
Head · 1940 · age 30 · b. ~1910 · Washington
★ 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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
27 people indexed on this census page (nara:1940:m-t0627-04375-00134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | John P. Lewis THIS PERSON | 30 | Head | Promotion Man | Washington |
| 3 | Maxine W. Lewis | 24 | Wife | — | Washington |
| 4 | Gerald D. Lewis | 2 | Son | — | Washington |
| 6 | Sigvart W. Jaeger | 34 | Head | Salesman | Norway |
| 7 | Herman Jaeger | 27 | Son | Elevator Operator | Washington |
| 8 | Joe Jaeger | 25 | Son | Laborer | Washington |
| 9 | Gordon Jaeger | 18 | Son | Apprentice Machinist | Washington |
| 11 | John T. Hathaway | 62 | Father in law | Laborer | England |
| 13 | Martha Clark | 62 | Mother in law | — | Minnesota |
| 15 | Anna Browne | 74 | Mother | — | Illinois |
| 17 | Gene Merling | 27 | Head | Operator | Washington |
| 18 | Incoronata Merling | 25 | Wife | — | Washington |
| 19 | Jean M. Merling | 1 | Daughter | — | Washington |
| 21 | Rosetta Parks | 10 | Daughter | — | Washington |
| 23 | Christian A. Jorgensen | 57 | Head | — | Denmark |
| 24 | Christiana Jorgensen | 58 | Wife | — | Denmark |
| 25 | Edith A. Jorgensen | 29 | Daughter | Stenographer | Washington |
| 27 | Carl O. Natterbery | 81 | Head | — | Norway |
| 28 | Mattie Natterbery | 82 | Wife | — | Norway |
| 30 | Patricia J. Smith | 3 | Daughter | — | Washington |
| 32 | Joseph Carrisseau | 57 | Head | Laborer | Michigan |
| 33 | Delia Carrisseau | 54 | Wife | — | Michigan |
| 34 | Daniel W. Merrill | 33 | Son-in-law | Trucker | Kansas |
| 35 | Margaret Merrill | 33 | Daughter | — | Wisconsin |
| 36 | Gloria L. Merrill | 10 | Granddaughter | — | Washington |
| 37 | Richard R. Merrill | 8 | Grandson | — | Washington |
| 39 | Jane F. Marsh | 65 | Head | — | Michigan |
Pedigree Summary
John
Gen 1 · 1 parents
~0.92
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)