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James Long — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Long across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 5-person household.
Age 63
b. ~1877
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Long |
| Given Name | James M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Physician |
| Industry | Private Practice |
| Class of Worker | E |
| Hours Worked | 56 |
| Income (1939) | 5000 |
| Highest Grade | C 8 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Physician |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1877 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Helen Long | Daughter | — | 28 | ~1912 |
| James Long | Head | — | 63 | ~1877 |
| Amelia Schecker | Other | — | 57 | ~1883 |
| Edward Youmans | Other | — | 50 | ~1890 |
| Mary Long | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 42
Allegheny, Pennsylvania · implied b. ~1878 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | James M. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Physician |
| Industry | General Medicine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 53
Allegheny, Pennsylvania · implied b. ~1877 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | James M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 34 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Doctor |
| Industry | General practice |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 150 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 63
Allegheny-County, Pennsylvania · implied b. ~1877 — 5 household members
| Surname | Long |
| Given Name | James M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Physician |
| Industry | Private Practice |
| Class of Worker | E |
| Hours Worked | 56 |
| Income (1939) | 5000 |
| Highest Grade | C 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 Long 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 Long
Head · 1940 · age 63 · b. ~1877 · 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
31 people indexed on this census page (nara:1940:m-t0627-03655-00766)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | James M. Long THIS PERSON | 63 | Head | Physician | Pennsylvania |
| 3 | Mary Long | 59 | Wife | — | New York |
| 4 | Helen Long | 28 | Daughter | Librarian | Pennsylvania |
| 5 | Edward Youmans | 50 | Brother-in-law | Clerk | New York |
| 6 | Amelia Schecker | 57 | Servant | Servant | Pennsylvania |
| 7 | Mary P. Lyddane | 57 | Head | Housekeeper | Pennsylvania |
| 8 | Ruth Loughlin | 35 | Lodger | Nurse | Pennsylvania |
| 11 | Thomas H. Mckay | 62 | Head | Executive | Pennsylvania |
| 12 | Martha Mckay | 54 | Wife | — | Pennsylvania |
| 13 | Lawrence Mckay | 26 | Son | Industrial Engineer | Pennsylvania |
| 14 | Anna G. Swallow | 30 | Servant | Servant | Pennsylvania |
| 16 | Audrey M. O. Saunders | 33 | Head | Bookkeeper | Massachusetts |
| 18 | Catherine Marshall | 67 | Aunt | — | Pennsylvania |
| 19 | Clara Laughlin | 71 | Head | — | Pennsylvania |
| 21 | Nancy L. Mason | 11 | Daughter | — | Pennsylvania |
| 22 | Robert J. Mason | 2 | Son | — | Pennsylvania |
| 24 | Hazel Symons | 44 | Wife | — | Michigan |
| 25 | Lulu Daubert | 44 | Wife | — | Ohio |
| 27 | Elizabeth Greene | 22 | Daughter | Stenographer | Pennsylvania |
| 28 | Anna Hotely | 27 | Servant | Servant | Pennsylvania |
| 30 | Edward Thompson | 79 | Head | — | Pennsylvania |
| 31 | Maude Thompson | 69 | Wife | — | Pennsylvania |
| 32 | Clara Graham | 35 | Servant | Servant | Pennsylvania |
| 33 | Ella A. Dowley | 65 | Head | — | Pennsylvania |
| 34 | Joseph Punnette | 83 | Head | — | North Ireland |
| 35 | Alfred Heintz Cox | 40 | Head | Building Cont. | Canada |
| 36 | Edith U. Cox | 30 | Wife | — | Pennsylvania |
| 37 | Marie E. Mckay | None | Head | — | Washington, D.C. |
| 38 | Thomas Jefferson Mckay | 30 | Head | Factory Mgr. | Pennsylvania |
| 39 | Alfred Aurora Jackiewicz | 30 | Head | Sales Representative | New Jersey |
| 40 | John Phillip Ritenour | 22 | Head | Metallurgist | 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)