MP
Mary Pollock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Pollock across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 5-person household.
Age 17
b. ~1923
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Pollock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Homestead |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Industry | No |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Homestead |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Michael Pollock | Head | — | 46 | ~1894 |
| Mary Pollock | Daughter | — | 17 | ~1923 |
| Valeria Pollock | Spouse | — | 42 | ~1898 |
| Anna Pollock | Daughter | — | 19 | ~1921 |
| Michael Pollock | Son | — | 23 | ~1917 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 7
Allegheny, Pennsylvania · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pollack |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Age at First Marriage | 7 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Czechoslovakia |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 17
Allegheny-County, Pennsylvania · implied b. ~1923 — 5 household members
| Surname | Pollock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Homestead |
| 1935 Residence (County) | Allegheny |
| Industry | No |
| Highest Grade | Hs 3 |
| 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 Pollock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Pollock
Daughter · 1940 · age 17 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Anna Pollock
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Pollock
Sibling · 1940 · age 23
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-t0627-03406-00224)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Allison | 38 | Head | Linderpaitner | Alabama |
| 42 | Sarah Allison | 31 | Wife | — | Pennsylvania |
| 43 | Rachel Allison | 12 | Daughter | — | Pennsylvania |
| 44 | James Allison | 8 | Son | — | Pennsylvania |
| 45 | Ralph Allison | 8 | Son | — | Pennsylvania |
| 46 | Lynn Allison | 4 | Daughter | — | Pennsylvania |
| 47 | Roy Allison | 1 | Son | — | Pennsylvania |
| 48 | Luie Labella | 35 | Head | — | Mexico |
| 49 | Julius Labella | 26 | Wife | — | Pennsylvania |
| 50 | Albert Labella | 9 | Son | — | Pennsylvania |
| 51 | Joseph Hriego | 43 | Head | — | Hungary |
| 52 | Anna Hriego | 43 | Wife | — | Hungary |
| 53 | Anna Hriego | 24 | Daughter | Packer | Pennsylvania |
| 54 | Joseph Hriego | 12 | Son | — | Pennsylvania |
| 55 | Elmer E. Diehl | 47 | Head | Barber | Pennsylvania |
| 56 | Gaynell Diehl | 40 | Wife | — | Pennsylvania |
| 57 | George Campbell | 25 | Step-son | Repair Man | Pennsylvania |
| 58 | Elsie Diehl | 16 | Daughter | — | Pennsylvania |
| 59 | Lois Diehl | 10 | Daughter | — | Pennsylvania |
| 60 | Charles Diehl | 5 | Son | — | Pennsylvania |
| 61 | George Roth | 54 | Head | Janitor | Austria |
| 62 | Regenia Roth | 53 | Wife | — | Austria |
| 63 | Andrew Roth | 20 | Son | Laborer | Pennsylvania |
| 64 | Richard Roth | 9 | Son | — | Pennsylvania |
| 65 | Michael Huszar | 29 | Head | Painter | Pennsylvania |
| 66 | Anna Huszar | 35 | Wife | — | Pennsylvania |
| 67 | Alan Huszar | 1 | Daughter | — | Pennsylvania |
| 68 | Alex Blanies | 53 | Head | Laborer | Russia |
| 69 | Stella Blanies | 48 | Wife | — | Poland |
| 70 | Chester Blanies | 21 | Son | Laborer | Pennsylvania |
| 71 | Vincent Blanies | 18 | Son | — | Pennsylvania |
| 72 | Stella Blanies | 13 | Daughter | Laborer | Pennsylvania |
| 73 | Louis Blanies | 10 | Son | — | Pennsylvania |
| 74 | James Blanies | 7 | Son | — | Pennsylvania |
| 75 | Michael Pollock | 46 | Head | Laborer | Czechoslovakia |
| 76 | Valeria Pollock | 42 | Wife | — | Czechoslovakia |
| 77 | Michael Pollock | 23 | Son | Laborer | Pennsylvania |
| 78 | Anna Pollock | 19 | Daughter | Clerk | Pennsylvania |
| 79 | Mary Pollock THIS PERSON | 17 | Daughter | — | Pennsylvania |
| 80 | Joseph Ignatz | 47 | Head | Handy Man | 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)