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John Mcfadden — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Mcfadden across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Thomas & Mary — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | McFadden |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Salesman |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 832 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Salesman |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Thomas Mcfadden | Son | — | 29 | ~1911 |
| Thomas Mcfadden | Head | — | 62 | ~1878 |
| John Mcfadden | Son | — | 23 | ~1917 |
| Mary Mcfadden | Spouse | — | 67 | ~1873 |
Census Appearances
1920
King, Washington
Son, age 3
King, Washington · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McFadden |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 13
King, Washington · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McFadden |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Illinois |
| 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 23
King-County, Washington · implied b. ~1917 — 4 household members
| Surname | McFadden |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Salesman |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 832 |
| 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 Mcfadden across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Mcfadden (~0.92 confidence) and mother Mary Mcfadden (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Mcfadden
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Mcfadden
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcfadden
Son · 1940 · age 23 · b. ~1917 · Washington
★ You are viewing this record
Sibling
Thomas Mcfadden
Sibling · 1940 · age 29
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-t0627-04379-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M. De Roy | 11 | Son | — | Washington |
| 2 | Michael De Roy | 6 | Son | — | Washington |
| 3 | Ymye | Ymge Johnson | 77 | Mother | — | Norway |
| 4 | Augustine Casey | 63 | Head | Salesman | Nebraska |
| 5 | Mary W. Casey | 56 | Wife | Salesman | Massachusetts |
| 6 | Florence Casey | 21 | Daughter | — | Washington |
| 7 | J. Arthur Heath | 77 | Head | Stenographer | Maine |
| 8 | Eleanor A. Heath | 64 | Wife | Inspector | England |
| 9 | Ruth E. Heath | 26 | Daughter | Cook | Washington |
| 10 | Mary Helen Heath | 22 | Daughter | Stenographer | Washington |
| 11 | Charles R. Taylor | 65 | Head | Stenographer | Maryland |
| 12 | Mabel W. Taylor | 62 | Wife | Driver | Montana |
| 13 | Margaret Taylor | 20 | Daughter | — | Montana |
| 14 | Thomas Barber | 27 | Lodger | Stenographer | Minnesota |
| 15 | Mary Agnes Hall | 78 | Head | — | Minnesota |
| 16 | Hazel Lemon | 23 | Daughter | — | Washington |
| 17 | Kenneth W. Tuttle | 36 | Head | Physicist | Washington |
| 18 | Harriet Tuttle | 32 | Wife | Proprietor | Delaware |
| 19 | Kenneth W. Tuttle | 4 | Son | — | Washington |
| 20 | Laura Akey | 66 | Mother | — | Ohio |
| 21 | Edwin H. Brown | 49 | Head | Salesman | Oregon |
| 22 | Lulu E. Brown | 42 | Wife | — | Montana |
| 23 | Rita M. Brown | 14 | Daughter | — | Washington |
| 24 | Mary Jane Brown | 12 | Daughter | — | Washington |
| 25 | Helen V. Brown | 10 | Daughter | — | Washington |
| 26 | Josephine Brown | 8 | Daughter | — | Washington |
| 27 | Thurman W. Gale | 63 | Head | Telerk | Clerk | Kansas |
| 28 | Nanabel Gale | 62 | Wife | Chief Clerk | Kansas |
| 29 | Thomas E. Mcfadden | 62 | Head | Carpenter | Illinois |
| 30 | Mary A. Mcfadden | 67 | Wife | — | Illinois |
| 31 | Thomas R. Mcfadden | 29 | Son | Salesman | Washington |
| 32 | John J. Mcfadden THIS PERSON | 23 | Son | Salesman | Washington |
| 33 | William Mcfadden | 26 | Head | Bridgeman | Washington |
| 34 | Edith Mcfadden | 23 | Wife | — | England |
| 35 | Joan Marie Mcfadden | 1 | Daughter | — | Washington |
| 36 | James Mccutchen | 60 | Head | Carpenter | Illinois |
| 37 | Gertrude Mccutchen | 45 | Wife | — | Pennsylvania |
| 38 | Marjory Mccutchen | 15 | Daughter | — | Washington |
| 39 | Alan Mccutchen | 9 | Son | — | Washington |
| 40 | Lydia Mccutchen | 65 | Sister | Librarian | Illinois |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 2 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)