JK
John Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Kelly across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Bridget & Francis — first a son (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Kelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | mechanical engineer |
| Industry | airplane manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Mechanical Engineer |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1907 |
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 |
|---|---|---|---|---|
| Francis Kelly | Head | — | 72 | ~1868 |
| John Kelly | Son | — | 33 | ~1907 |
| Bridget Kelly | Spouse | — | 72 | ~1868 |
Census Appearances
1920
King, Washington
Son, age 13
King, Washington · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
Son, age 23
King, Washington · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Student |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 33
King-County, Washington · implied b. ~1907 — 3 household members
| Surname | Kelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | mechanical engineer |
| Industry | airplane manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | C 5 |
| 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 Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Bridget Kelley (~0.92 confidence) and father Francis Kelly (~0.92 confidence) and father Francis Kelly (~0.92 confidence) and mother Bridget Kelly (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Bridget Kelley
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Francis Kelly
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Francis Kelly
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Bridget Kelly
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Kelly
Son · 1940 · age 33 · b. ~1907 · 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
40 people indexed on this census page (nara:1940:m-t0627-04374-00847)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clay Ames | 36 | Head | Sales Clerk | Minnesota |
| 2 | Anna B Ames | 30 | Wife | — | Washington |
| 3 | Virginia Ames | 9 | Daughter | — | Washington |
| 4 | Dorothy Ames | 3 | Daughter | — | Washington |
| 5 | Christopher Alstad | 27 | Head | Delivery Man | Norway |
| 6 | Catherine Alstad | 24 | Wife | — | New York |
| 7 | Christopher Jr Alstad | 5 | Son | — | New York |
| 8 | Arlene Alstad | 4 | Daughter | — | New York |
| 9 | Edmund J. Beeson | 30 | Head | Retail Salesman | Washington |
| 10 | Margaret B Beeson | 29 | Wife | — | Canada-English |
| 11 | Alyce Beeson | 5 | Daughter | — | Washington |
| 12 | Erlene Beeson | 4 | Daughter | — | Washington |
| 13 | Caryln Beeson | 0 | Daughter | — | Washington |
| 14 | Leroy D. Berry | 64 | Father-in-law | — | Canada-English |
| 15 | Alice Berry | 56 | Mother-in-law | — | Nebraska |
| 16 | Francis E Kelly | 72 | Head | — | Ireland Free State |
| 17 | Bridget Kelly | 72 | Wife | — | Ireland Free State |
| 18 | John Kelly THIS PERSON | 33 | Son | Mechanical Engineer | Washington |
| 19 | Harry E Marshall | 51 | Head | Delivery | Minnesota |
| 20 | Cecile B Marshall | 44 | Wife | — | Oregon |
| 21 | Margaret C Marshall | 19 | Daughter | Dancing Teacher | Washington |
| 22 | Cynthia M. Dilton | 76 | Mother-in-law | — | Oregon |
| 23 | Robert A Hanson | 54 | Head | Bridge Carpenter | Minnesota |
| 24 | Nellie R Hanson | 44 | Wife | — | Kentucky |
| 25 | James Hanson | 20 | Son | Retail Salesman | Washington |
| 26 | Robert Jr. Hanson | 13 | Son | — | Washington |
| 27 | Gustav Olson | 59 | Head | — | Sweden |
| 28 | Emma S Olson | 51 | Wife | — | Minnesota |
| 29 | Kenneth Olson | 29 | Son | Welder | Washington |
| 30 | Frances Olson | 20 | Daughter-in-law | Waitress | Minnesota |
| 31 | William Lathrop | 74 | Head | — | Wisconsin |
| 32 | Retha B Lathrop | 75 | Wife | — | Illinois |
| 33 | William K Johanson | 35 | Head | Plumber | Washington |
| 34 | Mabel Johanson | 26 | Wife | — | Arkansas |
| 35 | Betty Johanson | 8 | Daughter | — | Washington |
| 36 | William K. Johanson | 5 | Son | — | Washington |
| 37 | Donna Johanson | 4 | Daughter | — | Washington |
| 38 | Arthur L Wolff | 48 | Head | Truck Driver | Minnesota |
| 39 | James Marks | 62 | Head | Landscaper | New Zealand |
| 40 | Gertrude M Marks | 61 | Wife | — | Germany |
Related Census Records
Pedigree Summary
John
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)