JG
John Griffith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pierce-County, Washington
Our Model Tree links this John Griffith across the 1910, 1920, 1930 and 1940 US Censuses in Pierce-County, Washington (XGBoost, ~Confirmed), with identified parents Ella & Ella — first a head (b.~1899), then head of a 3-person household.
Age 41
b. ~1899
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pierce-County, Washington |
| Surname | Griffith |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Tacoma City |
| 1935 Residence (County) | Pierce |
| Additional Details | |
| Occupation | Dentist |
| Industry | Own practice |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 924 |
| Highest Grade | C-5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Dentist |
| Township / Ward | Tacoma City |
| Est. Birth Year | ~1899 |
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 | — | 41 | ~1899 |
| John Griffith | Son | — | 12 | ~1928 |
| Verna Griffith | Spouse | — | 37 | ~1903 |
Census Appearances
1910
Pierce, Washington
Son, age 11
Pierce, Washington · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Pierce, Washington
Son, age 20
Pierce, Washington · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Pierce, Washington
Head, age 31
Pierce, Washington · implied b. ~1899 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 25 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Dentist |
| Industry | Own Practice |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Pierce-County, Washington
Head, age 41
Pierce-County, Washington · implied b. ~1899 — 3 household members
| Surname | Griffith |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Tacoma City |
| 1935 Residence (County) | Pierce |
| Occupation | Dentist |
| Industry | Own practice |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 924 |
| Highest Grade | C-5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ella Griffith (~0.92 confidence) and mother Ella Griffith (~0.92 confidence) and father Walter Griffith (~0.92 confidence) and father Walter Griffith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ella Griffith
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Ella Griffith
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Walter Griffith
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Walter Griffith
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Griffith
Head · 1940 · age 41 · b. ~1899 · 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 — Pierce-County, Washington
Open full size
1940 US Federal Census — Pierce-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04388-00308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | G. R. Foster | 53 | Head | Reporter | Kansas |
| 2 | Rayfield Foster | 56 | Wife | — | Missouri |
| 3 | Pearl E. Madsen | 34 | Head | — | Washington |
| 4 | Eleanor C. Madsen | 21 | Daughter | Bookkeeper | California |
| 5 | Thomas Elvain | 50 | Head | Merchant | Ireland |
| 6 | Mary M. Elvain | 47 | Wife | — | Canada-English |
| 7 | Rose Mary E. Elvain | 21 | Daughter | — | Idaho |
| 8 | Philip F. Elvain | 19 | Son | — | Idaho |
| 9 | Kathleen B. Elvain | 11 | Daughter | — | Idaho |
| 10 | Stanley G. Anderson | 37 | Head | Salesman | Washington |
| 11 | Ester L. Anderson | 39 | Wife | — | Minnesota |
| 12 | Glenn C. Anderson | 5 | Son | — | Washington |
| 13 | — | None | — | — | — |
| 14 | Jerry W. Sandal | 36 | Head | Teller | Norway |
| 15 | Dorothy W. Sandal | 34 | Wife | — | Kansas |
| 16 | Mariah J. Sandal | 15 | Daughter | — | Washington |
| 17 | Marjorie D. Sandal | 13 | Daughter | — | Washington |
| 18 | Mary D. Ogden | 65 | Head | — | Iowa |
| 19 | Joseph W. Harrison | 30 | Head | Building Contractor | Washington |
| 20 | Marie B. Harrison | 32 | Wife | — | Washington |
| 21 | Neal P. Harrison | 4 | Son | — | Washington |
| 22 | Ernest E. Foster | 47 | Head | Switchman | Wisconsin |
| 23 | Clara Foster | 46 | Wife | — | Missouri |
| 24 | Donald R. Kahler | 32 | Head | Teller | Washington |
| 25 | Marguerite A. Kahler | 31 | Wife | — | Iowa |
| 26 | John W. Griffith THIS PERSON | 41 | Head | Dentist | Indiana |
| 27 | Verna C. Griffith | 37 | Wife | — | Illinois |
| 28 | John W. Jr. Griffith | 12 | Son | — | Washington |
| 29 | Robert C. Wilson | 26 | Head | Chemist | Washington |
| 30 | Jean W. Wilson | 25 | Wife | — | Washington |
| 31 | George G. Sturdev | 52 | Head | Barber | Montana |
| 32 | Marie B. Sturdev | 46 | Wife | — | Nebraska |
| 33 | Ernest W. Mann | 36 | Head | Salesman | Michigan |
| 34 | Ingrid M. Mann | 35 | Wife | — | Washington |
| 35 | Ernest W. Jr. Mann | 14 | Son | — | Washington |
| 36 | Marilyn G. Mann | 8 | Daughter | — | Washington |
| 37 | Charles A. Rogers | 61 | Head | — | Indiana |
| 38 | Kathryn F. Rogers | 51 | Wife | Librarian | Iowa |
| 39 | Mary Louise Rogers | 17 | Daughter | — | Washington |
| 40 | J. Edward Rogers | 16 | Son | — | Washington |
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)