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James Buchanan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Buchanan across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 8-person household.
Age 40
b. ~1900
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Buchanan |
| Given Name | James Howard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Electrician |
| Industry | Municipal Electric Plant |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1600 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Electrician |
| Township / Ward | Tarentum |
| Est. Birth Year | ~1900 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Walter Buchanan | Son | — | 12 | ~1928 |
| Clyde Buchanan | Son | — | 9 | ~1931 |
| James Buchanan | Head | — | 40 | ~1900 |
| Harry Buchanan | Other | — | 73 | ~1867 |
| Helen Buchanan | Daughter | — | 18 | ~1922 |
| James Buchanan | Son | — | 15 | ~1925 |
| Dorothy Buchanan | Spouse | — | 41 | ~1899 |
| Mary Buchanan | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Westmoreland, Pennsylvania
Head, age 31
Westmoreland, Pennsylvania · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Electrician |
| Industry | Power Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 8500 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 40
Allegheny-County, Pennsylvania · implied b. ~1900 — 8 household members
| Surname | Buchanan |
| Given Name | James Howard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Allegheny |
| Occupation | Electrician |
| Industry | Municipal Electric Plant |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1600 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 James Buchanan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Buchanan
Head · 1940 · age 40 · b. ~1900 · 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
38 people indexed on this census page (nara:1940:m-t0627-03419-00134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fred E. Achenbrough | 76 | Head | — | Pennsylvania |
| 42 | Mary Achenbrough | 74 | Wife | — | Pennsylvania |
| 43 | S. Ross Cunningham | 56 | Head | Supt. Brick Manufacturer | Pennsylvania |
| 44 | Lillian Cunningham | 60 | Wife | — | Pennsylvania |
| 46 | James Howard Buchanan THIS PERSON | 40 | Head | Electrician | Pennsylvania |
| 47 | Dorothy A. Buchanan | 41 | Wife | — | Pennsylvania |
| 48 | Mary E. Buchanan | 20 | Daughter | Housemaid | Pennsylvania |
| 49 | Helen Jane Buchanan | 18 | Daughter | — | Pennsylvania |
| 50 | James E. Buchanan | 15 | Son | — | Pennsylvania |
| 51 | Walter Buchanan | 12 | Son | — | Pennsylvania |
| 52 | Clyde Buchanan | 9 | Son | — | Pennsylvania |
| 53 | Harry Elmer Buchanan | 73 | Father | — | Pennsylvania |
| 54 | Bertie S. Burford | 54 | Head | Gas Operator Fuel Dept | Pennsylvania |
| 55 | Helen Burford | 52 | Wife | — | Germany |
| 56 | Ernest Devoge | 52 | Head | Laborer Brick Mason | Belgium |
| 57 | Pearl Devoge | 50 | Wife | — | Pennsylvania |
| 58 | Ruth May Devoge | 15 | Daughter | — | Pennsylvania |
| 59 | Nellie Smith | 54 | Head | — | Pennsylvania |
| 60 | Myrtle Smith | 33 | Daughter | Glass Cutter | Pennsylvania |
| 61 | Dorothy Smith | 26 | Daughter | Waitress | Pennsylvania |
| 62 | Hazel Smith | 23 | Daughter | Glass Cutter | Pennsylvania |
| 63 | George Smith | 17 | Son | New Worker | Pennsylvania |
| 64 | Ralph Blose | 40 | Head | Pipefitter | Pennsylvania |
| 65 | Lillian Blose | 39 | Wife | — | Pennsylvania |
| 66 | Ralph Jr. Blose | 15 | Son | — | Pennsylvania |
| 67 | Vernon Blose | 13 | Son | — | Pennsylvania |
| 68 | Ruth Larkin | 53 | Head | Rubber On Belt | Pennsylvania |
| 69 | Mary Larkin | 23 | Daughter | Booker | Pennsylvania |
| 70 | George D. Gibson | 37 | Head | Opener | Pennsylvania |
| 71 | Edith Gibson | 30 | Wife | — | Pennsylvania |
| 72 | George Jr. Gibson | 7 | Son | — | Pennsylvania |
| 73 | Wilbur Grosky | 31 | Head | Barber | Pennsylvania |
| 74 | Ruth Grosky | 29 | Wife | — | Pennsylvania |
| 75 | Carol Ann Grosky | 3 | Daughter | — | Pennsylvania |
| 76 | Jack W. Grosky | 0 | Son | — | Pennsylvania |
| 77 | Thelma W. Hogsett | 37 | Head | Carrier Smoother | Pennsylvania |
| 78 | Betty Jane Hogsett | 16 | Daughter | — | Pennsylvania |
| 79 | Emma Roland | 60 | Mother | — | Estonia |
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)