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Mary Blair — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, Pennsylvania
Our Model Tree links this Mary Blair across the 1920, 1930 and 1940 US Censuses in Erie-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 2-person household.
Age 75
b. ~1865
Female
Head
Born: Scotland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, Pennsylvania |
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Erie City |
| 1935 Residence (County) | Erie |
| Naturalization Status | Alien |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Erie City |
| Est. Birth Year | ~1865 |
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 Blair | Head | — | 75 | ~1865 |
| George Blair | Son | — | 40 | ~1900 |
Census Appearances
1920
Erie, Pennsylvania
Head, age 55
Erie, Pennsylvania · implied b. ~1865 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Year of Immigration | 1881 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Erie, Pennsylvania
Other, age 65
Erie, Pennsylvania · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1881 |
| Age at First Marriage | 19 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 5200 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Erie-County, Pennsylvania
Head, age 75
Erie-County, Pennsylvania · implied b. ~1865 — 2 household members
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Erie City |
| 1935 Residence (County) | Erie |
| Naturalization Status | Alien |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Blair
Head · 1940 · age 75 · b. ~1865 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Erie-County, Pennsylvania
Open full size
1940 US Federal Census — Erie-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03647-00416)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Andrew S. Frazier | 37 | Head | Salesman | Pennsylvania |
| 2 | Frieda J. Frazier | 31 | Wife | — | Pennsylvania |
| 3 | Jeanette Frazier | 3 | Daughter | — | Pennsylvania |
| 4 | William E. Edinger | 70 | Head | — | Pennsylvania |
| 5 | Mina Edinger | 64 | Wife | — | Pennsylvania |
| 6 | William Jr. Edinger | 39 | Son | Automobile Parts Clerk | Pennsylvania |
| 7 | Andrew A. G. Edinger | 34 | Son | New Worker | Pennsylvania |
| 8 | Russell H. Edinger | 22 | Son | New Worker | Pennsylvania |
| 9 | Lloyd Edinger | 16 | Grandson | — | Pennsylvania |
| 10 | Raymond Hart | 50 | Head | Meter Inspector | New York |
| 11 | Muriel Hart | 46 | Wife | — | New York |
| 12 | Arlene Hart | 3 | Daughter | — | Pennsylvania |
| 13 | Thomas J. Carnahan | 66 | Head | — | Northern Ireland |
| 14 | Bessie Carnahan | 38 | Daughter | — | Pennsylvania |
| 15 | Gladys Carnahan | 24 | Daughter | — | Pennsylvania |
| 16 | Dorothy Carnahan | 18 | Daughter | — | Pennsylvania |
| 17 | William Carnahan | 15 | Son | — | Pennsylvania |
| 18 | John F. Erb | 48 | Head | Laborer | Pennsylvania |
| 19 | Clara Erb | 45 | Wife | — | Pennsylvania |
| 20 | Marjorie R. Erb | 18 | Daughter | Sales New Worker | Pennsylvania |
| 21 | Ralph L. Jordan | 32 | Head | Radio Retail And Repair | Pennsylvania |
| 22 | Evelyn Jordan | 31 | Wife | Assists In Radio Retail Store | Pennsylvania |
| 23 | Roy A. Jordan | 68 | Father | — | Pennsylvania |
| 24 | Amelia Jordan | 65 | Mother | — | Germany |
| 25 | George B. Lyman | 32 | Head | Truck Driver | Connecticut |
| 26 | Edna J. Lyman | 29 | Wife | — | Pennsylvania |
| 27 | Shirley Lyman | 5 | Daughter | — | Pennsylvania |
| 28 | Donna May Lyman | 2 | Daughter | — | Pennsylvania |
| 29 | Stanley B. Pasterka | 27 | Head | Annealer | Pennsylvania |
| 30 | Olive Pasterka | 20 | Wife | — | Pennsylvania |
| 31 | Iris May Pasterka | 4 | Daughter | — | Pennsylvania |
| 32 | Robert S. Pasterka | 2 | Son | — | Pennsylvania |
| 33 | Carl Pasterka | 12 | Son | — | Pennsylvania |
| 34 | Clyde W. Shaner | 39 | Head | Electrician | Pennsylvania |
| 35 | Beulah R. Shaner | 39 | Wife | — | Pennsylvania |
| 36 | Jeanne N. Shaner | 19 | Daughter | New Worker | Pennsylvania |
| 37 | Carole Shaner | 14 | Daughter | — | Pennsylvania |
| 38 | Nancy Shaner | 6 | Daughter | — | Pennsylvania |
| 39 | Mary Blair THIS PERSON | 75 | Head | — | Scotland |
| 40 | George Blair | 40 | Son | Painter | 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)