RC
Ruth Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Ruth Campbell across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a head (b.~1905), then head of a 2-person household.
Age 35
b. ~1905
Female
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Campbell |
| Given Name | Ruth |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Telephone operator |
| Industry | Western Union |
| Class of Worker | P |
| Hours Worked | 44 |
| Income (1939) | 1248 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Telephone Operator |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1905 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Campbell | Daughter | — | 16 | ~1924 |
| Ruth Campbell | Head | — | 35 | ~1905 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 14
Allegheny, Pennsylvania · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Ruth E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 25
Allegheny, Pennsylvania · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Ruth E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 35
Allegheny-County, Pennsylvania · implied b. ~1905 — 2 household members
| Surname | Campbell |
| Given Name | Ruth |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Telephone operator |
| Industry | Western Union |
| Class of Worker | P |
| Hours Worked | 44 |
| Income (1939) | 1248 |
| Highest Grade | Hs 2 |
| 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 Ruth Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Campbell (~0.92 confidence) and mother Mary Campbell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Campbell
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Mary Campbell
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Campbell
Head · 1940 · age 35 · b. ~1905 · 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
39 people indexed on this census page (nara:1940:m-t0627-03670-00331)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth Campbell THIS PERSON | 35 | Head | Telephone Operator | Pennsylvania |
| 2 | Evelyn Campbell | 16 | Daughter | — | Pennsylvania |
| 3 | Isabelle E. Weissing | 42 | Head | — | Pennsylvania |
| 4 | Henry C. Weissing | 73 | Father | — | Pennsylvania |
| 5 | Howard S. Mcdonald | 22 | Head | Iron Worker | Pennsylvania |
| 6 | Esther R. Mcdonald | 22 | Wife | — | Pennsylvania |
| 7 | Clifford R. Church | 52 | Head | Salesman | Pennsylvania |
| 8 | Florence P. Church | 52 | Wife | — | Pennsylvania |
| 9 | Edith Church | 23 | Daughter | New Worker | Pennsylvania |
| 10 | Clifford R. Jr. Church | 18 | Son | — | Pennsylvania |
| 11 | Anna Nicholson | 65 | Head | Matron | Pennsylvania |
| 12 | Adolphus H. Klintz | 64 | Head | Hardware Salesman | Pennsylvania |
| 13 | Mary G. Klintz | 60 | Wife | — | Pennsylvania |
| 14 | Raymond E. Klintz | 22 | Son | Hardware Salesman | Pennsylvania |
| 15 | Joseph Klones | 65 | Head | — | England |
| 16 | Sabina Klones | 60 | Wife | — | Germany |
| 17 | Lawrance B. Kern | 28 | Head | Office Clerk | Pennsylvania |
| 18 | Helen M. Kern | 22 | Wife | — | Pennsylvania |
| 19 | Joan M. Kern | 1 | Daughter | — | Pennsylvania |
| 20 | Lorenz B. Mcconnell | 26 | Head | Stationary Engineer | Pennsylvania |
| 21 | Marguerite C. Mcconnell | 26 | Wife | — | Pennsylvania |
| 22 | Paul N. Smeck | 21 | Brother-in-law | Tractor Operator | Pennsylvania |
| 23 | Georgetta W. Mcconnell | 25 | Head | — | Pennsylvania |
| 24 | Earl F. Mcconnell | 25 | Husband | Stationary Engineer | Pennsylvania |
| 25 | John F. Mcconnell | 2 | Son | — | Pennsylvania |
| 26 | Mary Schneider | 22 | Head | Stenographer | Pennsylvania |
| 27 | Dorothy Schneider | 18 | Sister | Typist | Pennsylvania |
| 28 | Robert A. Boyer | 34 | Head | Stock Clerk Material | Pennsylvania |
| 29 | Verna E. Boyer | 27 | Wife | — | Pennsylvania |
| 30 | Susan J. Boyer | 2 | Daughter | — | Pennsylvania |
| 31 | Vernon W. Boyer | 1 | Son | — | Pennsylvania |
| 32 | Charles E. Myers | 35 | Head | Operator | Pennsylvania |
| 33 | Louella J. Myers | 29 | Wife | — | Pennsylvania |
| 34 | Luella G. Myers | 7 | Daughter | — | Pennsylvania |
| 35 | Charlotte E. Myers | 4 | Daughter | — | Pennsylvania |
| 36 | Charles E. Jr. Myers | 1 | Son | — | Pennsylvania |
| 37 | George M. Eavy | 68 | Head | Washer | Alabama |
| 38 | Carl Paolino | 23 | Head | Gardner | Pennsylvania |
| 39 | Florence E. Paolino | 21 | Wife | — | Ohio |
Pedigree Summary
Ruth
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)