JG
John Griffith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Griffith across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 3-person household.
Age 48
b. ~1892
Male
Head
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Griffith |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Bryn Mawr |
| 1935 Residence (County) | King |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Bryn Mawr |
| Est. Birth Year | ~1892 |
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 Griffith | Head | — | 48 | ~1892 |
| Robert Griffith | Son | — | 20 | ~1920 |
| Viola Griffith | Spouse | — | 48 | ~1892 |
Census Appearances
1920
King, Washington
Head, age 28
King, Washington · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Occupation | Boiler-maker |
| Industry | Ship-yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
King, Washington
Head, age 38
King, Washington · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| Age at First Marriage | 22 |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Missouri |
| Occupation | Boiler Maker |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | no |
| Veteran | No |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
King-County, Washington
Head, age 48
King-County, Washington · implied b. ~1892 — 3 household members
| Surname | Griffith |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Bryn Mawr |
| 1935 Residence (County) | King |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Griffith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Griffith
Head · 1940 · age 48 · b. ~1892 · Washington
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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-t0627-04343-00653)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Georgia Shaughnessy | 39 | Wife | Saleswoman | Canada Eng |
| 42 | Virginia Shaughnessy | 14 | Daughter | — | Washington |
| 43 | Mary Lou Shaughnessy | 10 | Daughter | — | Washington |
| 44 | Victor Berg | 48 | Head | Carpenter | So Dakota |
| 45 | Mary E. Berg | 47 | Wife | — | Minnesota |
| 46 | Walter S. Davis | 31 | Head | Handicraft Teacher | Iowa |
| 47 | Ella Louise Davis | 33 | Wife | Sand Blaster | Iowa |
| 48 | Jean M. Davis | 9 | Daughter | — | So Dakota |
| 49 | Dale G. Davis | 8 | Son | — | Washington |
| 50 | H. M. James | 76 | Father | — | Indiana |
| 51 | William D. Pollard | 44 | Head | Mechanic | California |
| 52 | Pauline A. Pollard | 34 | Wife | — | California |
| 53 | Grace Pollard | 15 | Daughter | — | California |
| 54 | Viola Pollard | 7 | Daughter | — | Washington |
| 55 | C. H. White | 59 | Head | House Painter | Illinois |
| 56 | Alice R. White | 51 | Wife | Postal Clerk | Minnesota |
| 57 | Walter H. White | 20 | Son | Draftsman | Washington |
| 58 | Leo J. King | 35 | Head | Power Lineman | Minnesota |
| 59 | Alice R. King | 41 | Wife | — | Kansas |
| 60 | Alice V. Murphy | 79 | Mother-in-law | — | Iowa |
| 61 | Andrew O. Duval | 47 | Head | Truck Driver | Michigan |
| 62 | Sibyl D. Duval | 42 | Wife | — | Massachusetts |
| 63 | Andrew M. Duval | 20 | Son | New Worker | Washington |
| 64 | Dorothy M. Duval | 15 | Daughter | — | Washington |
| 65 | Beatrice E. Duval | 7 | Daughter | — | Washington |
| 66 | Andrew Duval | 75 | Father | — | Canada Fr |
| 67 | W. D. Wilson | 56 | Head | Dentist | Oregon |
| 68 | Lillian B. Wilson | 54 | Wife | — | Oregon |
| 69 | Stanford L. Wilson | 31 | Son | Salesman | Washington |
| 70 | John T. Griffith THIS PERSON | 48 | Head | — | Oklahoma |
| 71 | Viola M. Griffith | 48 | Wife | — | Texas |
| 72 | Robert R. Griffith | 20 | Son | Laboratory Worker | Washington |
| 73 | Ball Evans Coffee | 40 | Head | Bookkeeping | Tennessee |
| 74 | Martha Coffee | 36 | Wife | — | Norway |
| 75 | Wayne L. Coffee | 12 | Son | — | Washington |
| 76 | John E. Coffee | 3 | Son | 0 | Washington |
| 77 | Albert F. Lee | 44 | Head | Packer | Missouri |
| 78 | Sadie E. Lee | 54 | Wife | — | Iowa |
| 79 | Henry C. Lee | 21 | Son | Checker, Shipping | Washington |
| 80 | Dale H. Lee | 18 | Son | New Worker | Washington |
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)