MF
Mary Flaherty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Flaherty across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Flaherty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1923 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Flaherty | Spouse | — | 49 | ~1891 |
| Dolores Flaherty | Daughter | — | 20 | ~1920 |
| Bridget Flaherty | Daughter | — | 6 | ~1934 |
| Mary Flaherty | Daughter | — | 17 | ~1923 |
| Regis Flaherty | Son | — | 12 | ~1928 |
| Bart Flaherty | Head | — | 41 | ~1899 |
| Patrick Flaherty | Son | — | 15 | ~1925 |
| Rita Flaherty | Daughter | — | 13 | ~1927 |
| Sarah Flaherty | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 6
Allegheny, Pennsylvania · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | North Carolina |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 17
Allegheny-County, Pennsylvania · implied b. ~1923 — 9 household members
| Surname | Flaherty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Pennsylvania |
| 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 Flaherty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Flaherty
Daughter · 1940 · age 17 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Patrick Flaherty
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Flaherty
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Flaherty
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regis Flaherty
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dolores Flaherty
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bridget Flaherty
Sibling · 1940 · age 6
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-t0627-03672-00449)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth Briggs | 90 | Head | — | England |
| 42 | Mary Briggs | 59 | Daughter | Real Estate | England |
| 43 | Harry Kirby | 49 | Head | Painter | New York |
| 44 | Jessie Kirby | 47 | Wife | — | New Jersey |
| 45 | Ronald Kirby | 21 | Son | Laborer | Pennsylvania |
| 46 | Bill Kirby | 23 | Son | Laborer | New York |
| 47 | Robert G. Patterson | 57 | Head | Laborer | Pennsylvania |
| 48 | Sadie M. Patterson | 57 | Wife | — | Pennsylvania |
| 49 | Paul M. Sheldon | 29 | Lodger | Truck Helper | Pennsylvania |
| 50 | Bart Flaherty | 41 | Head | Police Man | Pennsylvania |
| 51 | Mary C. Flaherty | 49 | Wife | — | Ireland |
| 52 | Dolores Flaherty | 20 | Daughter | — | Pennsylvania |
| 53 | Mary Flaherty THIS PERSON | 17 | Daughter | — | Pennsylvania |
| 54 | Patrick Flaherty | 15 | Son | — | Pennsylvania |
| 55 | Rita Flaherty | 13 | Daughter | — | Pennsylvania |
| 56 | Regis Flaherty | 12 | Son | — | Pennsylvania |
| 57 | Sarah Flaherty | 9 | Daughter | — | Pennsylvania |
| 58 | Bridget Flaherty | 6 | Daughter | — | Pennsylvania |
| 59 | Robert O. Wagner | 41 | Head | Patrol Police | Pennsylvania |
| 60 | Nell Wagner | 43 | Wife | — | Illinois |
| 61 | Grace Guarino | 76 | Head | — | Italy |
| 62 | Samuel Guarino | 48 | Son | Proprietor | Italy |
| 63 | Margaret Gallagher | 72 | Head | Cleaning | Pennsylvania |
| 64 | Rubenhard | 65 | Lodger | Laborer | Pennsylvania |
| 65 | F. E. Cavett | 69 | Head | Pension | Pennsylvania |
| 66 | Emma D. Cavett | 65 | Wife | — | Pennsylvania |
| 67 | Mary Wood | 60 | Lodger | Cleaning | Pennsylvania |
| 68 | Walter Hullerman | 33 | Head | Truck Driver | Pennsylvania |
| 69 | Lottie Hullerman | 30 | Wife | — | Pennsylvania |
| 70 | Ora Hlavis | 61 | Head | Seamstress | Pennsylvania |
| 71 | James Powell | 57 | Head | Laborer | — |
| 72 | Catherine Powell | 54 | Wife | — | Erie Ireland |
| 73 | Catherine Ullman | 27 | Lodger | Cleaning | Pennsylvania |
| 74 | John Powell | 34 | Son | — | Pennsylvania |
| 75 | William Powell | 24 | Son | — | Pennsylvania |
| 76 | George Shaw | 57 | Head | Laborer | Pennsylvania |
| 77 | Ray Shaw | 23 | Son | Office Work | Pennsylvania |
| 78 | Earl Shaw | 19 | Son | Office Work | Pennsylvania |
| 79 | Aida Jack | 34 | Head | Sewing | Indiana |
| 80 | Charles Jack | 11 | Son | — | Pennsylvania |
Related Census Records
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)