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Mary Barrett — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Barrett across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 2-person household.
Age 67
b. ~1873
Female
Head
Born: Pennsylvania
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Barrett |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1873 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Barrett | Head | — | 67 | ~1873 |
| Ray Barrett | Son | — | 34 | ~1906 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 45
Allegheny, Pennsylvania · implied b. ~1875 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barrett |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Spouse, age 58
Allegheny, Pennsylvania · implied b. ~1872 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barrett |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 18 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 67
Allegheny-County, Pennsylvania · implied b. ~1873 — 2 household members
| Surname | Barrett |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 1935 Residence | Same House |
| 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 Barrett across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Barrett
Head · 1940 · age 67 · b. ~1873 · 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-t0627-03663-00627)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen S Polson | 41 | Wife | — | Pennsylvania |
| 2 | Wm. A Jr Polson | 14 | Son | — | Pennsylvania |
| 3 | Melva R Polson | 7 | Daughter | — | Pennsylvania |
| 4 | John Nagy | 29 | Head | Counter | Pennsylvania |
| 5 | Margaret Nagy | 31 | Wife | — | Pennsylvania |
| 6 | Elsie Nagy | 9 | Daughter | — | Pennsylvania |
| 7 | John Nagy | 7 | Son | — | Pennsylvania |
| 8 | Verner B Brown | 38 | Head | Salesman | Pennsylvania |
| 9 | Laura L Brown | 33 | Wife | — | Pennsylvania |
| 10 | George F Brown | 41 | Brother | Policeman | Pennsylvania |
| 11 | End Block J -- Block Ten Begins Here | None | — | — | — |
| 12 | Stephen Krusek | 44 | Head | Cement Finisher | Yugoslavia |
| 13 | Block Ten & Eleven Continued Below | None | — | — | — |
| 14 | Harry H Callender | 61 | Head | Compressor Engineer | Pennsylvania |
| 15 | George Callender | 25 | Son | Painter | Pennsylvania |
| 16 | Jack Callender | 19 | Son | New Worker | Pennsylvania |
| 17 | Paul Truan | 27 | Son-in-law | Salesman | Pennsylvania |
| 18 | Alice E Truan | 21 | Daughter | — | Pennsylvania |
| 19 | Richard Truan | 2 | Grandson | — | Pennsylvania |
| 20 | Robert Truan | 1 | Grandson | — | Pennsylvania |
| 21 | Harvey L Walsh | 43 | Head | Salesman | Pennsylvania |
| 22 | Vera Walsh | 43 | Wife | — | Pennsylvania |
| 23 | Patricia Walsh | 15 | Daughter | — | Pennsylvania |
| 24 | Melvin M Sarver | 25 | Head | Clerk Dept. Supervisor | Pennsylvania |
| 25 | Norma Sarver | 24 | Wife | — | Pennsylvania |
| 26 | Richard Sarver | 2 | Son-in-law | — | Pennsylvania |
| 27 | Mary Barrett THIS PERSON | 67 | Head | — | Pennsylvania |
| 28 | Ray Barrett | 34 | Son | Laborer | Pennsylvania |
| 29 | Wm Drummond | 52 | Head | Machinist | Scotland |
| 30 | Grace Drummond | 40 | Sister | — | Pennsylvania |
| 31 | Albert Leach | 21 | Nephew | — | Pennsylvania |
| 32 | James Connelly | 41 | Head | Punch Press Operator | Pennsylvania |
| 33 | Wilhelmina Connelly | 36 | Wife | — | Pennsylvania |
| 34 | James F Connelly | 21 | Son | New Worker | Pennsylvania |
| 35 | John Connelly | 17 | Son | — | Pennsylvania |
| 36 | Margaret Connelly | 16 | Daughter | — | Pennsylvania |
| 37 | Edward Connelly | 14 | Son | — | Pennsylvania |
| 38 | Robert Connelly | 10 | Son | — | Pennsylvania |
| 39 | Chas Connelly | 8 | Son | — | Pennsylvania |
| 40 | Emma Kendall | 46 | Head | — | Germany |
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)