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John Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Sullivan across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1919), then head of a 2-person household.
Age 21
b. ~1919
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Sullivan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Carrier |
| Industry | Shipping |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 204 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Carrier |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1919 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lydia Sullivan | Head | — | 47 | ~1893 |
| John Sullivan | Son | — | 21 | ~1919 |
Census Appearances
1920
King, Washington
Son, age 1
King, Washington · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 11
King, Washington · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | John J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 21
King-County, Washington · implied b. ~1919 — 2 household members
| Surname | Sullivan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Carrier |
| Industry | Shipping |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 204 |
| 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 Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and mother Lydia Sullivan (~0.92 confidence) and mother Lydia Sullivan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Sullivan
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Lydia Sullivan
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Lydia Sullivan
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Sullivan
Son · 1940 · age 21 · b. ~1919 · 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
39 people indexed on this census page (nara:1940:m-t0627-04378-00433)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 42 | Mabel C Keene | 44 | Head | Manager | Minnesota |
| 43 | Helen Keene | 21 | Daughter | Drug Clerk | Montana |
| 44 | Hazel Keene | 23 | Daughter | Cashier | Montana |
| 45 | William Keene | 15 | Son | — | Washington |
| 46 | Howard Johnson | 28 | Head | Janitor | Washington |
| 47 | Janet Johnson | 24 | Wife | — | Washington |
| 48 | William Winslow | 31 | Head | Truck Driver | Washington |
| 49 | Edward Brittain | 29 | Head | Manager | Ohio |
| 50 | Mildred Brittain | 26 | Wife | — | Washington |
| 51 | Theodore Hukee | 38 | Head | Truck Driver | Maryland |
| 52 | Clarence Hukee | 39 | Wife | — | Washington |
| 53 | Margaret Hukee | 67 | Mother | — | Maryland |
| 54 | Patricia Smith | 10 | Niece | — | Washington |
| 55 | William W Kee | 38 | Head | Business Agent | Washington |
| 56 | Mildred Kee | 36 | Wife | — | Washington |
| 57 | Shirley Jean Kee | 12 | Daughter | — | Washington |
| 58 | Merrill Mckinley | 33 | Head | Steam Fitter | Michigan |
| 59 | Esther Mckinley | 30 | Wife | — | Washington |
| 60 | William Mckinley | 5 | Son | — | Washington |
| 61 | Berthell Graham | 56 | Head | Proprietor | Minnesota |
| 62 | Dorothy Graham | 33 | Wife | — | Washington |
| 63 | Lydia Sullivan | 47 | Head | — | Washington |
| 64 | John Sullivan THIS PERSON | 21 | Son | Carrier | Washington |
| 65 | Edward Renstrom | 38 | Head | Bookkeeper | Sweden |
| 66 | Hazel Renstrom | 37 | Wife | — | Minnesota |
| 67 | William Renstrom | 14 | Son | — | Washington |
| 68 | Lawrence Van Dyke | 42 | Head | Superintendent | Washington |
| 69 | Elizabeth Van Dyke | 39 | Wife | — | Illinois |
| 70 | Albert Youngman | 36 | Head | Salesman | Poland |
| 71 | Lillie Youngman | 29 | Wife | — | Washington |
| 72 | Janet Youngman | 8 | Daughter | — | Washington |
| 73 | Helene Youngman | 3 | Daughter | — | Washington |
| 74 | Jane Joseph | 59 | Mother | — | Poland |
| 75 | Albert Johnson | 50 | Head | Police Officer | Missouri |
| 76 | Emma Johnson | 49 | Wife | Proprietor | Washington |
| 77 | Oliver Dautt | 29 | Head | Draftsman | Kansas |
| 78 | Mary Dautt | 27 | Wife | — | Missouri |
| 79 | Daniel Dautt | 1 | Son | — | Washington |
| 80 | Albert Plunderhith | 47 | Head | — | North Dakota |
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)