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Robert Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Johnston across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 3-person household.
Age 44
b. ~1896
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Johnston |
| Given Name | Robert H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Bellevue Borough |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Foreman |
| Industry | Lumber yard |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2700 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Foreman |
| Township / Ward | Bellevue Borough |
| Est. Birth Year | ~1896 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Jean Johnston | Daughter | — | 12 | ~1928 |
| Robert Johnston | Head | — | 44 | ~1896 |
| Jean Johnston | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 30
Allegheny, Pennsylvania · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1904 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Melter Open Hearth |
| Industry | Steel Mill |
| 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 | 1915 |
| Birthplace (normalized) | scotland |
1930
Allegheny, Pennsylvania
Head, age 35
Allegheny, Pennsylvania · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 30 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Clerk |
| Industry | Lumb. Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 37.50 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Allegheny-County, Pennsylvania
Head, age 44
Allegheny-County, Pennsylvania · implied b. ~1896 — 3 household members
| Surname | Johnston |
| Given Name | Robert H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Bellevue Borough |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | Foreman |
| Industry | Lumber yard |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2700 |
| Highest Grade | H-4 |
| 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 Robert Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Robert Johnston
Head · 1940 · age 44 · b. ~1896 · 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-t0627-03397-00598)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert H. Johnston THIS PERSON | 44 | Head | Foreman | Scotland |
| 42 | Jean Johnston | 35 | Wife | — | Pennsylvania |
| 43 | Jean Johnston | 12 | Daughter | — | Pennsylvania |
| 44 | Miles W. Sr. Smith | 43 | Head | Assistant Manager | Pennsylvania |
| 45 | Allean Smith | 41 | Wife | — | Pennsylvania |
| 46 | Miles Jr. Smith | 18 | Son | — | Pennsylvania |
| 47 | George H. Smith | 16 | Son | — | Pennsylvania |
| 48 | William B. Smith | 5 | Son | — | Pennsylvania |
| 49 | Russell G. Pollock | 38 | Head | Assistant Production Mgr | Pennsylvania |
| 50 | Isabel Pollock | 37 | Wife | — | Pennsylvania |
| 51 | Russell Jr. Pollock | 10 | Son | — | Pennsylvania |
| 52 | Helen G. Ker | 78 | Mother-in-law | — | Virginia |
| 53 | William G. Heineman | 38 | Head | Draftsman | Pennsylvania |
| 54 | Elizabeth Heineman | 38 | Wife | — | Pennsylvania |
| 55 | William G. Heineman | 15 | Son | — | Pennsylvania |
| 56 | James H. Ross | 39 | Head | Salesman | Pennsylvania |
| 57 | Esther F. Ross | 39 | Wife | — | Pennsylvania |
| 58 | Roger A. Webster | 30 | Head | Production Office | Pennsylvania |
| 59 | Katherine Webster | 27 | Wife | — | Pennsylvania |
| 60 | Barry Webster | 3 | Son | — | Pennsylvania |
| 61 | Roger Jr. Webster | 0 | Son | — | Pennsylvania |
| 62 | Raymond J. Smith | 31 | Head | Salesman | Pennsylvania |
| 63 | Louise Smith | 29 | Wife | — | Pennsylvania |
| 64 | Louise C. Smith | 6 | Daughter | — | Pennsylvania |
| 65 | Raymond Jr. Smith | 4 | Son | — | Pennsylvania |
| 66 | James L. Smith | 1 | Son | — | Pennsylvania |
| 67 | Janet G. Smith | 1 | Daughter | — | Pennsylvania |
| 68 | Earl P. Freese | 46 | Head | Accountant | Pennsylvania |
| 69 | Elizabeth Freese | 38 | Wife | — | Pennsylvania |
| 70 | Jean Freese | 12 | Daughter | — | Pennsylvania |
| 71 | David Freese | 8 | Son | — | Pennsylvania |
| 72 | Harry Thongmore | 46 | Head | Office Clerk | Pennsylvania |
| 73 | Eloise Thongmore | 38 | Wife | — | Indiana |
| 74 | Brian J. Gilliland | 33 | Head | Teacher | Pennsylvania |
| 75 | Mary Gilliland | 31 | Wife | — | Pennsylvania |
| 76 | Franklin Gilliland | 4 | Son | — | Pennsylvania |
| 77 | William Pittinger | 44 | Head | Deputy Clerk | Pennsylvania |
| 78 | Eleanor Pittinger | 30 | Wife | — | Pennsylvania |
| 79 | William Phillips | 48 | Head | Office Manager | Illinois |
| 80 | Hazel Phillips | 42 | Wife | — | 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)