MR
Mary Regan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Regan across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| 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 | ~1925 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Regan | Son | — | 10 | ~1930 |
| Bernard Regan | Son | — | 6 | ~1934 |
| Mary Regan | Daughter | — | 15 | ~1925 |
| Thomas Regan | Son | — | 12 | ~1928 |
| Margaret Regan | Daughter | — | 14 | ~1926 |
| Edward Regan | Son | — | 19 | ~1921 |
| Martin Regan | Son | — | 16 | ~1924 |
| John Regan | Son | — | 18 | ~1922 |
| Catherine Regan | Spouse | — | 47 | ~1893 |
| Martin Regan | Head | — | 54 | ~1886 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age 4
Allegheny, Pennsylvania · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 15
Allegheny-County, Pennsylvania · implied b. ~1925 — 10 household members
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| 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 Mary Regan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Regan
Daughter · 1940 · age 15 · b. ~1925 · Pennsylvania
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Sibling
William Regan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Regan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Regan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Regan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Regan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Regan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Regan
Sibling · 1940 · age 14
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-t0627-03674-00633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph R Wheeler | 46 | Head | Fireman | Pennsylvania |
| 2 | Margaret Wheeler | 44 | Wife | — | Pennsylvania |
| 3 | George Wheeler | 22 | Son | Sprayer | Pennsylvania |
| 4 | Bernard Wheeler | 19 | Son | New Worker | Pennsylvania |
| 5 | Harold Wheeler | 17 | Son | New Worker | Pennsylvania |
| 6 | Edward Wheeler | 15 | Son | — | Pennsylvania |
| 7 | William Wheeler | 11 | Son | — | Pennsylvania |
| 8 | Nancy Jane Wheeler | 1 | Daughter | — | Pennsylvania |
| 9 | Stella Steiner | 36 | Head | — | Germany |
| 10 | Frank Steiner | 18 | Son | Apprentice | Germany |
| 11 | Marie Steiner | 15 | Daughter | — | Pennsylvania |
| 12 | Stephanie Steiner | 14 | Daughter | — | Pennsylvania |
| 13 | William Steiner | 8 | Son | — | Pennsylvania |
| 14 | Martin Regan | 54 | Head | Laborer | Ireland |
| 15 | Catherine Regan | 47 | Wife | — | England |
| 16 | Edward Regan | 19 | Son | Laborer | New York |
| 17 | John Regan | 18 | Son | New Worker | New York |
| 18 | Martin Regan | 16 | Son | — | Pennsylvania |
| 19 | Mary Regan THIS PERSON | 15 | Daughter | — | Pennsylvania |
| 20 | Margaret Regan | 14 | Daughter | — | Pennsylvania |
| 21 | Thomas Regan | 12 | Son | — | Pennsylvania |
| 22 | William Regan | 10 | Son | — | Pennsylvania |
| 23 | Bernard Regan | 6 | Son | — | Pennsylvania |
| 24 | George Rombach | 37 | Head | Core Maker | Pennsylvania |
| 25 | Evelyn Rombach | 41 | Wife | — | Pennsylvania |
| 26 | Gilbert Rombach | 14 | Son | — | Pennsylvania |
| 27 | Howard Rombach | 12 | Son | — | Pennsylvania |
| 28 | Richard Rombach | 10 | Son | — | Pennsylvania |
| 29 | Robert Rombach | 8 | Son | — | Pennsylvania |
| 30 | John Rombach | 6 | Son | — | Pennsylvania |
| 31 | Norman Rombach | 3 | Son | — | Pennsylvania |
| 32 | Michael Hazelcon | 50 | Head | Cooper | Slovakia |
| 33 | Catherine Hazelcon | 65 | Wife | — | Slovakia |
| 34 | Frank H Smola | 49 | Head | Auto Watchman | Pennsylvania |
| 35 | Helen Smola | 45 | Wife | — | Pennsylvania |
| 36 | Francis Smola | 24 | Son | Shippers Helper | Pennsylvania |
| 37 | George Smola | 20 | Son | New Worker | Pennsylvania |
| 38 | Dorothy Smola | 17 | Daughter | — | Pennsylvania |
| 39 | Marcella Smola | 13 | Daughter | — | Pennsylvania |
| 40 | John Mcconway | 33 | Head | Laborer | 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)