HT
Herbert Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Herbert Thompson across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents William & Mary — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Thompson |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerical work |
| Industry | U. Switch & Signal |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 720 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerical Work |
| Township / Ward | Swissvale Borough |
| Est. Birth Year | ~1916 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Herbert | Age | Birth yr |
|---|---|---|---|---|
| Mary Thompson | Spouse | — | 71 | ~1869 |
| Herbert Thompson | Son | — | 24 | ~1916 |
| William Thompson | Head | — | 73 | ~1867 |
| Stanley Thompson | Son | — | 31 | ~1909 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 4
Allegheny, Pennsylvania · implied b. ~1916 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Herbert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Mother Tongue | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 14
Allegheny, Pennsylvania · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 24
Allegheny-County, Pennsylvania · implied b. ~1916 — 4 household members
| Surname | Thompson |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerical work |
| Industry | U. Switch & Signal |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 720 |
| Highest Grade | H 4 |
| 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 Herbert Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Thompson (~0.92 confidence) and mother Mary Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Thompson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Mary Thompson
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Herbert Thompson
Son · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Stanley Thompson
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-03418-00577)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helena B. Smyth | 44 | Daughter | — | Pennsylvania |
| 2 | Lewis Greenawalt | 45 | Roomer | Butcher | Pennsylvania |
| 3 | Kenneth R. Smith | 37 | Head | Time Study Clerk | Pennsylvania |
| 4 | Mary Smith | 36 | Wife | — | Pennsylvania |
| 5 | Jayne Smith | 12 | Daughter | — | Pennsylvania |
| 6 | Robert Smith | 10 | Son | — | Pennsylvania |
| 7 | Ralph R. Kemmerer | 44 | Head | Engineer | Indiana |
| 8 | Edith H. Kemmerer | 44 | Wife | — | Missouri |
| 9 | Alvin E. Kemmerer | 24 | Son | Machinist | Missouri |
| 10 | Ruby Kemmerer | 19 | Daughter | Clerk | Missouri |
| 11 | Melba Kemmerer | 15 | Daughter | — | Missouri |
| 12 | John H. Thompson | 51 | Head | Tool Helper | England |
| 13 | Anne R. Thompson | 48 | Wife | — | Scotland |
| 14 | Elizabeth Barr | 74 | Mother-in-law | — | Scotland |
| 15 | William Barr | 72 | Brother-in-law | — | Scotland |
| 16 | John W. Thompson | 71 | Head | — | Pennsylvania |
| 17 | Elsie Thompson | 72 | Wife | — | Pennsylvania |
| 18 | Minnie Thompson | 39 | Daughter | Clerical Work | Pennsylvania |
| 19 | Arfield Railingshafer | 25 | Head | Solicitor | Pennsylvania |
| 20 | Elizabeth Railingshafer | 24 | Wife | — | Pennsylvania |
| 21 | Linda Railingshafer | 2 | Daughter | — | Pennsylvania |
| 22 | James Mckarney | 66 | Head | Inspector | Pennsylvania |
| 23 | Mary Mckarney | 64 | Wife | — | Northumberland |
| 24 | Walter R. Martin | 45 | Head | Purchasing Agent | Illinois |
| 25 | Audrey Martin | 33 | Wife | — | Pennsylvania |
| 26 | Mabel Jenkins | 51 | Head | — | Indiana |
| 27 | William H. Thompson | 73 | Head | — | England |
| 28 | Mary Thompson | 71 | Wife | — | England |
| 29 | Stanley Thompson | 31 | Son | Draftsman | England |
| 30 | Herbert Thompson THIS PERSON | 24 | Son | Clerical Work | Pennsylvania |
| 31 | Fred Georgia | 55 | Head | Clerical Work | Pennsylvania |
| 32 | Ethel Georgia | 58 | Wife | — | Pennsylvania |
| 33 | Ira Trunell | 42 | Head | Architecture | Pennsylvania |
| 34 | Lyda Trunell | 43 | Wife | — | Pennsylvania |
| 35 | Patricia J. Trunell | 9 | Daughter | — | Pennsylvania |
| 36 | Charles F. Scherer | 30 | Head | Heating Engineer | Pennsylvania |
| 37 | Ethel E. Scherer | 29 | Wife | — | Pennsylvania |
| 38 | Harold J. Boyle | 42 | Head | Paperhanger | Pennsylvania |
| 39 | Hilda Boyle | 44 | Wife | — | Ohio |
| 40 | Patricia Boyle | 17 | Daughter | — | Ohio |
Related Census Records
Pedigree Summary
Herbert + 1 sibling
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)