CA
Catherine Allen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Catherine Allen across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 11-person household.
Age 25
b. ~1915
Female
Daughter
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Allen |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1915 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Catherine | Age | Birth yr |
|---|---|---|---|---|
| Elmer Mcmahon | Other | — | 17 | ~1923 |
| William Mcmahon | Other | — | 25 | ~1915 |
| Doris Allen | Daughter | — | 2 | ~1938 |
| Edwin Allen | Other | — | 25 | ~1915 |
| Regis Mcmahon | Son | — | 21 | ~1919 |
| Elizabeth Mcmahon | Head | — | 60 | ~1880 |
| John Mcmahon | Son | — | 28 | ~1912 |
| William Mcmahon | Son | — | 18 | ~1922 |
| Robert Allen | Other | — | ~1940 | |
| Catherine Allen | Daughter | — | 25 | ~1915 |
| Robert Mcmahon | Son | — | 16 | ~1924 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 15
Allegheny, Pennsylvania · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | Catherine |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Clerk |
| Industry | grocery store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 25
Allegheny-County, Pennsylvania · implied b. ~1915 — 11 household members
| Surname | Allen |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H 4 |
| 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 Catherine Allen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Catherine Allen
Daughter · 1940 · age 25 · b. ~1915 · Pennsylvania
★ You are viewing this record
Sibling
Regis Mcmahon
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcmahon
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Allen
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcmahon
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcmahon
Sibling · 1940 · age 28
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
36 people indexed on this census page (nara:1940:m-t0627-03676-00048)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emma C Seli | 5 | Daughter | — | Pennsylvania |
| 2 | Frederick L Seli | 3 | Son | — | Pennsylvania |
| 3 | Donald H Bradley | 29 | Head | Service Man | Pennsylvania |
| 4 | Eveline M Bradley | 22 | Wife | — | Maryland |
| 5 | Agnes A Schilling | 60 | Head | General Office Wk | Pennsylvania |
| 6 | George Benaman | 36 | Head | General Office Clk | Pennsylvania |
| 7 | Rena Q Benaman | 39 | Wife | — | Pennsylvania |
| 8 | George Benaman | 8 | Son | — | Pennsylvania |
| 11 | Elizabeth Mcmahon | 60 | Head | — | Pennsylvania |
| 12 | John H Mcmahon | 28 | Son | Employment Clerk | Pennsylvania |
| 13 | Regis M Mcmahon | 21 | Son | Laborer | Pennsylvania |
| 14 | William J Mcmahon | 18 | Son | New Worker | Pennsylvania |
| 15 | Robert F Mcmahon | 16 | Son | — | Pennsylvania |
| 16 | Catherine Allen THIS PERSON | 25 | Daughter | — | Pennsylvania |
| 17 | Edwin H Allen | 25 | Son-in-law | Musician | Pennsylvania |
| 18 | Doris M Allen | 2 | Daughter | — | Pennsylvania |
| 19 | Robert W Allen | 0 | Grandson | — | Pennsylvania |
| 20 | Elmer J Mcmahon | 17 | Nephew | — | Pennsylvania |
| 21 | William J Mcmahon | 25 | Nephew | Stock Clerk | Pennsylvania |
| 22 | Ellwood R Shaw | 38 | Head | Machinist | Delaware |
| 23 | Josephine P Shaw | 35 | Wife | — | Pennsylvania |
| 24 | Mary L Shaw | 13 | Daughter | — | Pennsylvania |
| 25 | Betty B Shaw | 1 | Daughter | — | Pennsylvania |
| 26 | Cordelia E Canaga | 42 | Mother-in-law | Typist Clerk | Ohio |
| 27 | Louise A Canaga | 33 | Sister-in-law | Teacher | Pennsylvania |
| 28 | Hallie B Alston | 60 | Head | Watchman | Pennsylvania |
| 29 | Annette A Alston | 50 | Wife | — | Pennsylvania |
| 30 | Hallie C Alston | 32 | Son | Receiving Teller | Pennsylvania |
| 31 | Charles G Alston | 29 | Son | Stock Clerk | Pennsylvania |
| 32 | Charles B Harlow | 42 | Head | Shop Agent | Pennsylvania |
| 33 | Catherine C Harlow | 37 | Wife | — | Pennsylvania |
| 34 | James C Harlow | 14 | Son | — | Pennsylvania |
| 35 | Frederick G Harlow | 10 | Son | — | Pennsylvania |
| 36 | Douglas G Donahue | 67 | Head | — | England |
| 37 | Elizabeth Donahue | 67 | Wife | — | England |
| 40 | Robert H Brown | 31 | Head | Plumber | Pennsylvania |
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)