WG
William Griffith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Griffith across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Emil — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Griffith |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Forward Twp |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Laborer |
| Industry | Tin mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 165 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Laborer |
| Township / Ward | Forward Twp |
| Est. Birth Year | ~1918 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Helen Griffith | Daughter | — | 14 | ~1926 |
| Emil Griffith | Head | — | 64 | ~1876 |
| William Griffith | Son | — | 22 | ~1918 |
| Edward Griffith | Son | — | 40 | ~1900 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 2
Allegheny, Pennsylvania · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | William |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Penna. |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Allegheny, Pennsylvania
Other, age 12
Allegheny, Pennsylvania · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | William |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Allegheny-County, Pennsylvania
Son, age 22
Allegheny-County, Pennsylvania · implied b. ~1918 — 4 household members
| Surname | Griffith |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Forward Twp |
| 1935 Residence (County) | Allegheny |
| Occupation | Laborer |
| Industry | Tin mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 165 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 William Griffith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Emil Griffith (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Emil Griffith
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Griffith
Son · 1940 · age 22 · b. ~1918 · Pennsylvania
★ You are viewing this record
Sibling
Helen Griffith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Griffith
Sibling · 1940 · age 40
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03404-00372)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joann M. Christy | 10 | Daughter | — | Ohio |
| 2 | Charlene Christy | 9 | Daughter | — | Ohio |
| 3 | James E. Christy | 2 | Son | — | Penna |
| 4 | James E. Christy | 70 | Head | — | Penna |
| 5 | Irene V. Christy | 69 | Sister | — | Penna |
| 6 | Mary E. Christy | 64 | Sister | — | Penna |
| 7 | William Campbell | 43 | Head | Laborer | Penna |
| 8 | Helen Campbell | 27 | Wife | — | Penna |
| 9 | Ralph Campbell | 67 | Bro in Law | Laborer | Penna |
| 10 | William Stulpin | 77 | Head | Laborer | Poland |
| 11 | Antoinette Stulpin | 57 | Wife | — | Poland |
| 12 | Edward Stulpin | 22 | Son | Laborer | Penna |
| 13 | Boleslaw Stulpin | 54 | Lodger | Laborer | Poland |
| 14 | Emil E. Griffith | 64 | Head | — | Penna |
| 15 | Edward E. Griffith | 40 | Son | Laborer | Penna |
| 16 | William J. Griffith THIS PERSON | 22 | Son | Laborer | New York |
| 17 | Helen E. Griffith | 14 | Daughter | — | Penna |
| 18 | Leonard Sr. Demalon | 38 | Head | Electrician | Italy |
| 19 | Anna Demalon | 30 | Wife | — | Penna |
| 20 | Shirley Demalon | 6 | Daughter | — | Penna |
| 21 | Leonard Jr. Demalon | 4 | Son | — | Penna |
| 22 | Thomas Demalon | 1 | Son | — | Penna |
| 23 | Joseph Demalon | 74 | Father | — | Italy |
| 24 | Mary Demalon | 72 | Mother | — | Italy |
| 25 | Martin Campbell | 29 | Head | Laborer | Penna |
| 26 | Anna Campbell | 27 | Wife | — | Penna |
| 27 | Frank Campbell | 6 | Son | — | Penna |
| 28 | John Campbell | 3 | Son | — | Penna |
| 29 | Clarence Campbell | 27 | Head | Laborer | Penna |
| 30 | Gertrude Campbell | 27 | Wife | — | Penna |
| 31 | Arlene Campbell | 4 | Daughter | — | Penna |
| 32 | Earl S. Will | 45 | Head | Laborer | Penna |
| 33 | Anna Will | 43 | Wife | — | Penna |
| 34 | Lucile Will | 20 | Daughter | — | Penna |
| 35 | Doris Will | 15 | Daughter | — | Penna |
| 36 | Russell Weigle | 34 | Head | Laborer | Penna |
| 37 | Catherine Weigle | 32 | Wife | Telephone Opr. | Penna |
| 38 | Elder Mary A. Weigle | 51 | Mother | Housekeeper | Penna |
| 39 | Herschel Abbott | 40 | Head | Manager | South Carolina |
| 40 | Willa Abbott | 35 | Wife | — | Penna |
Pedigree Summary
William + 2 siblings
Gen 1 · 1 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)