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John Jennings — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Jennings across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Margaret & Margaret — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Jennings |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Fire Salesman |
| Industry | Retail Motors |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 691 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Fire Salesman |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1918 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Philip Jennings | Head | — | 50 | ~1890 |
| Marion Smith | Other | — | 42 | ~1898 |
| Mary Ivey | Other | — | 75 | ~1865 |
| Richard Jennings | Son | — | 18 | ~1922 |
| John Jennings | Son | — | 22 | ~1918 |
| Margaret Jennings | Spouse | — | 50 | ~1890 |
Census Appearances
1920
King, Washington
Son, age 2
King, Washington · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Texas |
| Mother's Birthplace | Minnesota |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 13
King, Washington · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jennings |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Texas |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 22
King-County, Washington · implied b. ~1918 — 6 household members
| Surname | Jennings |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Fire Salesman |
| Industry | Retail Motors |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 691 |
| Highest Grade | C-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 Jennings across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Margaret Jennings (~0.92 confidence) and mother Margaret Jennings (~0.92 confidence) and father Philip Jennings (~0.92 confidence) and father Philip Jennings (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Jennings
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Margaret Jennings
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Philip Jennings
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Philip Jennings
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Jennings
Son · 1940 · age 22 · b. ~1918 · Washington
★ You are viewing this record
Sibling
Richard Jennings
Sibling · 1940 · age 18
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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04377-00804)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lloyd B. Coen | 45 | Head | Credit Man | Minnesota |
| 2 | Blanche M. Coen | 43 | Wife | — | Missouri |
| 3 | Barbara Coen | 16 | Daughter | — | Washington |
| 4 | Thomas Coen | 12 | Son | — | Washington |
| 5 | Philip Jennings | 50 | Head | Elec. Engineer | Texas |
| 6 | Margaret B. Jennings | 50 | Wife | — | Minnesota |
| 7 | John A. Jennings THIS PERSON | 22 | Son | Fire Salesman | Washington |
| 8 | Richard Jennings | 18 | Son | — | Washington |
| 9 | Mary R. Ivey | 75 | Mother | Practitioner | New York |
| 10 | Marion Smith | 42 | Lodger | Real Estate Broker | Michigan |
| 11 | Edward Rafferty | 50 | Head | Chef | So. Dakota |
| 12 | Winifred Rafferty | 49 | Wife | Cashier | Mexico |
| 13 | Lauren Mckenzie | 33 | Head | Traveling Salesman | Minnesota |
| 14 | Arda Mckenzie | 48 | Wife | — | Oregon |
| 15 | Seater Mabel | 62 | Lodger | — | Minnesota |
| 16 | Cyril Batt | 55 | Head | Auto Salesman | Canada-Eng |
| 17 | Evelyn Batt | 52 | Wife | — | Washington |
| 18 | L. Lloyd Meyer | 33 | Son-in-law | Electrical Salesman | Iowa |
| 19 | Lois Meyer | 30 | Daughter | Milliner | Washington |
| 20 | Carl Sunde | 32 | Son-in-law | Helper | Washington |
| 21 | Lucy Sunde | 17 | Daughter | — | Canada-Eng |
| 22 | Carla Jo Sunde | 1 | Granddaughter | — | Washington |
| 23 | — | None | — | — | — |
| 24 | John C. Ingerman | 46 | Head | Partnership | Washington |
| 25 | Kathryn S. Ingerman | 35 | Wife | — | Montana |
| 26 | Mary Joan Ingerman | 11 | Daughter | — | Washington |
| 27 | Jean Ingerman | 6 | Daughter | — | Washington |
| 28 | Gervasio Barberis | 76 | Head | — | Italy |
| 29 | Mary Barberis | 69 | Wife | — | Italy |
| 30 | Edward A. Barberis | 33 | Son | Salesman | California |
| 31 | Jack Barberis | 70 | Brother | — | Italy |
| 32 | Richard H. Meagher | 47 | Head | Traveling Salesman | Michigan |
| 33 | Beulah E. Meagher | 46 | Wife | — | Michigan |
| 34 | Harriet R. Meagher | 18 | Daughter | — | Michigan |
| 35 | Archie W. Meagher | 14 | Son | — | Washington |
| 36 | Harriet A. Thompson | 79 | Mother-in-law | — | Michigan |
| 37 | Chester D. Bates | 48 | Head | Life Ins. Salesman | Arkansas |
| 38 | Mary B. Bates | 39 | Wife | — | Washington |
| 39 | David Bates | 3 | Son | — | Washington |
| 40 | Anne Loomis | 26 | Wife | Telephone Opr. | Montana |
Pedigree Summary
John + 1 sibling
Gen 1 · 4 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)