MC
Mary Carr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Carr across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 4-person household.
Age 52
b. ~1888
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Carr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1888 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Charles Carr | Head | — | 63 | ~1877 |
| Francis Carr | Son | — | 19 | ~1921 |
| Patrick Carr | Son | — | 18 | ~1922 |
| Mary Carr | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 34
Allegheny, Pennsylvania · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1915 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1920 |
| Birthplace (normalized) | ireland |
1930
Allegheny, Pennsylvania
Spouse, age 43
Allegheny, Pennsylvania · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1907 |
| Age at First Marriage | 17 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Allegheny-County, Pennsylvania
Spouse, age 52
Allegheny-County, Pennsylvania · implied b. ~1888 — 4 household members
| Surname | Carr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Carr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carr
Spouse · 1940 · age 52 · b. ~1888 · 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
40 people indexed on this census page (nara:1940:m-t0627-03661-00489)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Glory Reichard | 12 | Daughter | — | Pennsylvania |
| 42 | Robert Reichard | 9 | Son | — | Pennsylvania |
| 43 | Howard Reichard | 7 | Son | — | Pennsylvania |
| 44 | Rebecca Reichard | 4 | Daughter | — | Pennsylvania |
| 45 | David Snyder | 26 | Head | Baker | Pennsylvania |
| 46 | Virginia Snyder | 26 | Wife | — | Pennsylvania |
| 47 | Elizabeth A. Snyder | 5 | Daughter | — | Pennsylvania |
| 48 | Mary C. Snyder | 3 | Daughter | — | Pennsylvania |
| 49 | Albert R. Saunders | 39 | Head | Salesman | Ohio |
| 50 | Mary O. Saunders | 38 | Wife | — | Pennsylvania |
| 51 | Albert R. Jr. Saunders | 20 | Son | New Worker | Pennsylvania |
| 52 | Norberta L. Saunders | 18 | Daughter | — | Ohio |
| 53 | John Saunders | 16 | Son | — | Pennsylvania |
| 54 | Ralph Saunders | 14 | Son | — | Ohio |
| 55 | Raymond Saunders | 12 | Son | — | Pennsylvania |
| 56 | Jasper Manda | 71 | Father-in-law | Pensioned | Pennsylvania |
| 57 | John Ruane | 37 | Head | Carpenter | Scotland |
| 58 | Sarah A. Ruane | 27 | Wife | — | Ohio |
| 59 | Ellen Ruane | 7 | Daughter | — | Michigan |
| 60 | Sheila Ruane | 5 | Daughter | — | Pennsylvania |
| 61 | William M. Ruane | 2 | Son | — | Pennsylvania |
| 62 | Christ Fezor | 63 | Head | Operator Dry-Machine | Pennsylvania |
| 63 | Albert Fezor | 33 | Son | Packer | Pennsylvania |
| 64 | Etta Fezor | 29 | Daughter | — | Pennsylvania |
| 65 | George Fezor | 23 | Son | New Worker | Pennsylvania |
| 66 | Albert Fezor | 1 | Grandson | — | Pennsylvania |
| 67 | Louis Ferragonio | 38 | Head | Investigator | Pennsylvania |
| 68 | Angeline Ferragonio | 31 | Wife | — | Pennsylvania |
| 69 | Frank Ferragonio | 11 | Son | — | Pennsylvania |
| 70 | Louis Ferragonio | 8 | Son | — | Pennsylvania |
| 71 | Patsy Ferragonio | 1 | Son | — | Pennsylvania |
| 72 | Charles Carr | 63 | Head | Pensioned | Ireland |
| 73 | Mary Carr THIS PERSON | 52 | Wife | — | Ireland |
| 74 | Francis Carr | 19 | Son | — | Pennsylvania |
| 75 | Patrick Carr | 18 | Son | — | Pennsylvania |
| 76 | Robert Weissenstein | 40 | Head | Switchboard Wireman | Pennsylvania |
| 77 | Clara Weissenstein | 40 | Wife | Cashier | Pennsylvania |
| 78 | Russell Weissenstein | 19 | Son | Attendant | Pennsylvania |
| 79 | Dorothy Weissenstein | 16 | Daughter | — | Pennsylvania |
| 80 | Alfred Holmes | 73 | Father-in-law | Old Age | England |
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)