WC
William Chapman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Chapman across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Nellie & William — first a head (b.~1902), then head of a 7-person household.
Age 38
b. ~1902
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Chapman |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Trucking Co. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1144 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Truck Driver |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1902 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Juanita Chapman | Daughter | — | 9 | ~1931 |
| Eileen Chapman | Daughter | — | 11 | ~1929 |
| William Chapman | Head | — | 38 | ~1902 |
| Robert Chapman | Son | — | 6 | ~1934 |
| William Chapman | Son | — | 14 | ~1926 |
| George Chapman | Son | — | 4 | ~1936 |
| Audrey Chapman | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 17
Allegheny, Pennsylvania · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | West Virginia |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Allegheny, Pennsylvania
Head, age 28
Allegheny, Pennsylvania · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | West Virginia |
| Occupation | Laborer |
| Industry | Bedding Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Veteran | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Allegheny-County, Pennsylvania
Head, age 38
Allegheny-County, Pennsylvania · implied b. ~1902 — 7 household members
| Surname | Chapman |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Truck Driver |
| Industry | Trucking Co. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1144 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Chapman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Nellie Chapman (~0.92 confidence) and father William Chapman (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Nellie Chapman
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
William Chapman
b. ~1889
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Chapman
Head · 1940 · age 38 · b. ~1902 · Pennsylvania
★ 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 — 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-t0627-03671-00306)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Colette Ubinger | 37 | Sister | Salesclerk | Penna. |
| 2 | Clara Ubinger | 34 | Sister | Salesclerk | Penna. |
| 3 | Hoyt Roberts | 48 | Lodger | Salesman | Ohio |
| 4 | Fred Pechar | 51 | Head | Laborer | Penna. |
| 5 | Agnes Pechar | 48 | Wife | — | Penna. |
| 6 | Fred Pechar | 27 | Son | Salesclerk | Tennessee |
| 7 | John Pechar | 20 | Son | Laborer | Penna. |
| 8 | Howard Pechar | 19 | Son | New Worker | Penna. |
| 9 | Charles Pechar | 17 | Son | New Worker | Penna. |
| 10 | James Pechar | 15 | Son | — | Penna. |
| 11 | Raymond Pechar | 9 | Son | — | Penna. |
| 12 | Dolores Holland | 17 | Daughter | — | North Carolina |
| 13 | John Holland | 16 | Step Son | — | North Carolina |
| 14 | William Chapman THIS PERSON | 38 | Head | Truck Driver | Ohio |
| 15 | Audrey Chapman | 33 | Wife | — | Penna. |
| 16 | William Chapman | 14 | Son | — | Penna. |
| 17 | Eileen Chapman | 11 | Daughter | — | Penna. |
| 18 | Juanita Chapman | 9 | Daughter | — | Penna. |
| 19 | Robert Chapman | 6 | Son | — | Penna. |
| 20 | George Chapman | 4 | Son | — | Penna. |
| 21 | Joseph Hammond | 37 | Head | Truck Driver | Penna. |
| 22 | Frances Hammond | 31 | Wife | — | Penna. |
| 23 | George Hammond | 6 | Son | — | Penna. |
| 24 | Anna Kuntz | 71 | Head | — | Yugoslavia |
| 25 | August Kuntz | 47 | Son | Core Maker | Penna. |
| 26 | Louis Lamza | 41 | Head | Moulder Helper | Yugoslavia |
| 27 | Rose Lamza | 38 | Wife | Machine Operator | Penna. |
| 28 | William E. Harvey | 40 | Head | Truck Driver | Penna. |
| 29 | May Harvey | 34 | Wife | — | Penna. |
| 30 | William Harvey | 13 | Son | — | Penna. |
| 31 | Dorothy Harvey | 7 | Son | — | Penna. |
| 32 | Fred C. Million | 47 | Head | Cab Driver | Penna. |
| 33 | Eunice A. Million | 35 | Wife | — | Ohio |
| 34 | Francis Moore | 57 | Lodger | — | West Virginia |
| 35 | Charles W. Hawkins | 57 | Head | Cab Driver | Penna. |
| 36 | Elizabeth Hawkins | 50 | Wife | — | Penna. |
| 37 | Sarah Hawkins | 27 | Daughter | Salesclerk | Penna. |
| 38 | Marie Hawkins | 24 | Daughter | New Worker | Penna. |
| 39 | Charles Hawkins | 17 | Son | — | Penna. |
| 40 | Frank Melder | 47 | Son | Crane Operator | Penna. |
Pedigree Summary
William
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)