WB
William Barrett — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Barrett across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Barrett |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | O'Hara Twp |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | GW |
| Hours Worked | 64 |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Ohara Twp |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| John Barrett | Head | — | 44 | ~1896 |
| John Barrett | Son | — | 16 | ~1924 |
| Thomas Barrett | Son | — | 27 | ~1913 |
| William Barrett | Son | — | 20 | ~1920 |
| Mark Barrett | Son | — | 13 | ~1927 |
| Mary Barrett | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age
Allegheny, Pennsylvania · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barrett |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 10
Allegheny, Pennsylvania · implied b. ~1920 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barrett |
| Given Name | William F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 20
Allegheny-County, Pennsylvania · implied b. ~1920 — 6 household members
| Surname | Barrett |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | O'Hara Twp |
| 1935 Residence (County) | Allegheny |
| Occupation | New Worker |
| Class of Worker | GW |
| Hours Worked | 64 |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Barrett across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Barrett (~0.92 confidence) and mother Mary Barrett (~0.92 confidence) and mother Mary Barrett (~0.92 confidence) and father John Barrett (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Barrett
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mary Barrett
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Mary Barrett
b. ~1894
Source mother
● Household
· direct · ~0.92
Father
John Barrett
b. ~1896
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Barrett
Son · 1940 · age 20 · b. ~1920 · Pennsylvania
★ You are viewing this record
Sibling
Mark Barrett
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Barrett
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Barrett
Sibling · 1940 · age 16
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-t0627-03414-00021)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Huffman | 65 | Head | Carpenter | West Virginia |
| 2 | William Nevergold | 56 | Head | Laborer | Pennsylvania |
| 3 | John Behlau | 47 | Head | Laborer | Pennsylvania |
| 4 | John Barrett | 44 | Head | — | New York |
| 5 | Mary Barrett | 46 | Wife | — | Pennsylvania |
| 6 | Thomas Barrett | 27 | Son | Laborer | Pennsylvania |
| 7 | William Barrett THIS PERSON | 20 | Son | New Worker | Pennsylvania |
| 8 | John Barrett | 16 | Son | — | Pennsylvania |
| 9 | Mark Barrett | 13 | Son | — | Pennsylvania |
| 10 | Ray Palmer | 32 | Head | Draftsman | Pennsylvania |
| 11 | Mary Palmer | 30 | Wife | — | Pennsylvania |
| 12 | Edward Schmidt | 60 | Head | Manager | Germany |
| 13 | Ellen Schmidt | 50 | Wife | Cook | Sweden |
| 14 | William H. Tappe | 39 | Head | Superintendent | Pennsylvania |
| 15 | Marie Tappe | 32 | Wife | — | Pennsylvania |
| 16 | Lavonne Tappe | 11 | Daughter | — | Pennsylvania |
| 17 | William Tappe | 10 | Son | — | Pennsylvania |
| 18 | John Tappe | 8 | Son | — | Pennsylvania |
| 19 | Ronald Tappe | 5 | Son | — | Pennsylvania |
| 20 | John Cumberland | 34 | Head | Attorney | Washington, D.C. |
| 21 | Caroline Cumberland | 28 | Wife | — | Washington, D.C. |
| 22 | Mark D. Butler | 32 | Head | Stenographer Clerk | Ohio |
| 23 | Anne Butler | 30 | Wife | — | Maryland |
| 24 | Patricia Butler | 5 | Daughter | — | Maryland |
| 25 | Ludmilo Butler | 5 | Daughter | — | Maryland |
| 26 | Ira Dale Perry | 34 | Head | Mail Clerk | Pennsylvania |
| 27 | Mary Louise Perry | 35 | Wife | — | Pennsylvania |
| 28 | James Tuckey | 32 | Head | Draftsman | Pennsylvania |
| 29 | Dorothy Tuckey | 27 | Wife | — | Pennsylvania |
| 30 | William Tuckey | 7 | Son | — | Pennsylvania |
| 31 | Judith Tuckey | 2 | Daughter | — | Pennsylvania |
| 32 | Clifford Toensing | 30 | Head | District Manager | North Dakota |
| 33 | Elizabeth Toensing | 29 | Wife | — | Minnesota |
| 34 | Craig Toensing | 3 | Son | — | Michigan |
| 35 | Trent Toensing | 1 | Son | — | Pennsylvania |
| 36 | Helen Simpson | 22 | Servant | General Housework | Pennsylvania |
| 37 | Frank Chadonic | 27 | Head | Laborer | Pennsylvania |
| 38 | Margaret Chadonic | 27 | Wife | — | Pennsylvania |
| 39 | Margaret Schettley | 45 | Head | — | Germany |
| 40 | Elizabeth Schettley | 22 | Daughter | Senior Clerk | Pennsylvania |
Pedigree Summary
William + 3 siblings
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)