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James Blair — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Blair across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 3-person household.
Age 72
b. ~1868
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Blair |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | watchman |
| Industry | automobile |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1144 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Watchman |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1868 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Berrie Blair | Daughter | — | 26 | ~1914 |
| Bessie Blair | Spouse | — | 59 | ~1881 |
| James Blair | Head | — | 72 | ~1868 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 47
Allegheny, Pennsylvania · implied b. ~1873 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1881 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Blacksmith |
| Industry | Equitable Gas Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Year of Naturalization | 1904 |
| Birthplace (normalized) | scotland |
1930
Allegheny, Pennsylvania
Head, age 58
Allegheny, Pennsylvania · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 28 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Blacksmith |
| Industry | Foundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scottish |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Allegheny-County, Pennsylvania
Head, age 72
Allegheny-County, Pennsylvania · implied b. ~1868 — 3 household members
| Surname | Blair |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | watchman |
| Industry | automobile |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1144 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 James 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
James Blair
Head · 1940 · age 72 · b. ~1868 · 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 — 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-t0627-03662-00395)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alice Falk | 16 | son | — | Pennsylvania |
| 2 | Pauline Saul | 67 | lodger | — | Poland |
| 3 | Fred Amshul | 42 | head | Physician | Pennsylvania |
| 4 | Freda Amshul | 37 | wife | — | Pennsylvania |
| 5 | Caryl Helen Amshul | 6 | daughter | — | Pennsylvania |
| 6 | Anne Leschak | 28 | servant | Maid | Poland |
| 7 | Milton Lewis | 37 | head | Merchant | Pennsylvania |
| 8 | Fredericka Lewis | 33 | wife | — | Pennsylvania |
| 9 | Lorraine Lewis | 3 | daughter | — | Pennsylvania |
| 10 | Lawrence Lewis | 0 | son | — | Pennsylvania |
| 11 | Julia Beeley | 24 | servant | Maid | Pennsylvania |
| 12 | James Blair THIS PERSON | 72 | head | Watchman | Scotland |
| 13 | Bessie Blair | 59 | wife | — | Ohio |
| 14 | Berrie Blair | 26 | daughter | Stenographer | Pennsylvania |
| 15 | Peter J. Sugden | 44 | head | Custodian | Pennsylvania |
| 16 | Nellie Sugden | 39 | wife | — | Pennsylvania |
| 17 | Jean Iris Sugden | 14 | daughter | — | Pennsylvania |
| 18 | Shirley Mae Sugden | 11 | daughter | — | Pennsylvania |
| 19 | Bailey Moore | 48 | head | Vice-President | Pennsylvania |
| 20 | Marie Moore | 45 | wife | — | Maryland |
| 21 | Maid | None | — | — | — |
| 22 | Mayer Sinderman | 45 | head | Attorney | Pennsylvania |
| 23 | Kathryn Sinderman | 38 | wife | — | Pennsylvania |
| 24 | David H. Sinderman | 15 | son | — | Pennsylvania |
| 25 | Ruth Sinderman | 7 | daughter | — | Pennsylvania |
| 26 | Laura Pounds | 27 | servant | Maid | Pennsylvania |
| 27 | Anna Reineman | 77 | head | — | Pennsylvania |
| 28 | Elizabeth Reineman | 47 | daughter | — | Pennsylvania |
| 29 | Anna Rusadanrie | 26 | servant | Maid | Pennsylvania |
| 30 | Edmund Whited | 50 | head | Advertising Man | Canada |
| 31 | Ruby Whited | 45 | wife | — | West Virginia |
| 32 | John W. Whited | 12 | son | — | Pennsylvania |
| 33 | Olive Supple | 58 | mother-in-law | — | West Virginia |
| 34 | Markie Supple | 26 | nephew-in-law | Social Worker | Illinois |
| 35 | Edward S. Fathun | 56 | head | Electrical Engineer | Maryland |
| 36 | Mildred C. Fathun | 51 | wife | Squad Leader | Pennsylvania |
| 37 | Earl D. H. Fathun | 21 | son | — | Pennsylvania |
| 38 | Donald Fathun | 20 | son | Accounting Clerk | Pennsylvania |
| 39 | Glenn C. Fathun | 16 | son | — | Pennsylvania |
| 40 | Margaret Jean Fathun | 11 | daughter | — | Ohio |
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)