WC
William Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Campbell across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1914), then head of a 7-person household.
Age 26
b. ~1914
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Campbell |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| William Campbell | Head | — | 53 | ~1887 |
| Thomas Boyle | Other | — | 35 | ~1905 |
| Joseph Campbell | Son | — | 24 | ~1916 |
| Edward Campbell | Son | — | 22 | ~1918 |
| William Campbell | Son | — | 26 | ~1914 |
| C Campbell | Son | — | 20 | ~1920 |
| Sara Campbell | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 26
Allegheny-County, Pennsylvania · implied b. ~1914 — 7 household members
| Surname | Campbell |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 8 |
| 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 Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Campbell (~0.92 confidence) and father William Campbell (~0.92 confidence) and father William Campbell (~0.92 confidence) and mother Sara Campbell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Campbell
b. ~1888
Source father
● Household
· direct · ~0.92
Father
William Campbell
b. ~1887
Source father
● Household
· direct · ~0.92
Father
William Campbell
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Sara Campbell
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Campbell
Son · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Campbell
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Campbell
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
C Campbell
Sibling · 1940 · age 20
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-t0627-03676-00152)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Audrey M. Coombs | 28 | Daughter | Telephone Oper | Pennsylvania |
| 2 | Bernard Coombs | 26 | Son | Laborer | Pennsylvania |
| 3 | Virginia Patton | 25 | Sister | — | Pennsylvania |
| 4 | Robert Smith | 10 | Nephew | — | Pennsylvania |
| 5 | Francis Patton | 8 | Nephew | — | Pennsylvania |
| 6 | Nicholas J. Sebatt | 25 | Head | Porter | Pennsylvania |
| 7 | Mary A. (E) Sebatt | 21 | Wife | — | Pennsylvania |
| 8 | Josephine Sebatt | 2 | Son | — | Pennsylvania |
| 9 | Walter Sebatt | 23 | Brother | Laborer | Pennsylvania |
| 10 | Margaret Borden | 39 | Mother | — | Austria |
| 11 | Harriett Mcdermott | 18 | Sister in law | — | Pennsylvania |
| 12 | Frank Penel | 33 | Head | Care Taker | Pennsylvania |
| 13 | Catherine (E) Penel | 23 | Wife | — | Illinois |
| 14 | Francis R. Penel | 6 | Son | — | Pennsylvania |
| 15 | Phyllis A. Penel | 5 | Daughter | — | Pennsylvania |
| 16 | Michael P. Mcnally | 58 | Head | — | Pennsylvania |
| 17 | Emma H. Mcnally | 53 | Wife | — | Pennsylvania |
| 18 | Mary J. Mcnally | 27 | Daughter | Machine Operator | Pennsylvania |
| 19 | Michael P. Jr. Mcnally | 24 | Son | — | Pennsylvania |
| 20 | Raymond Mcnally | 22 | Son | Stock Boy | Pennsylvania |
| 21 | Rose E. Mcnally | 20 | Daughter | — | Pennsylvania |
| 22 | William B. Campbell | 53 | Head | Clerk | Pennsylvania |
| 23 | Sara J. Campbell | 49 | Wife | — | Indiana |
| 24 | William W. Campbell THIS PERSON | 26 | Son | — | Pennsylvania |
| 25 | Joseph H. Campbell | 24 | Son | Clerk | Pennsylvania |
| 26 | Edward F. Campbell | 22 | Son | Porter | Pennsylvania |
| 27 | C. Albert Campbell | 20 | Son | Messenger | Pennsylvania |
| 28 | Thomas G. Boyle | 35 | Cousin | — | Pennsylvania |
| 29 | Rufus Newhaur | 54 | Head | Bar Tender | Canada-Eng |
| 30 | Rose (E) Newhaur | 51 | Wife | — | Pennsylvania |
| 31 | Mary A. Newhaur | 28 | Daughter | — | Pennsylvania |
| 32 | Rose M. Newhaur | 25 | Daughter | Clerk | Pennsylvania |
| 33 | William F. Newhaur | 24 | Son | Laborer | Pennsylvania |
| 34 | James R. Newhaur | 23 | Son | Porter | Pennsylvania |
| 35 | Edward P. Newhaur | 20 | Son | Clerk | Pennsylvania |
| 36 | Thomas Pendergast | 67 | Head | Elev. Operator | Pennsylvania |
| 37 | Anna Pendergast | 67 | Wife | — | Pennsylvania |
| 38 | Richard Pendergast | 26 | Son | Chauffeur | Pennsylvania |
| 39 | Joseph Pendergast | 23 | Son | Laborer | Pennsylvania |
| 40 | Edward J. Pendergast | 33 | Son | Fireman | 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)