RT
Robert Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Thompson across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Robert & John — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Thompson |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Chipper |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | No 5 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Chipper |
| Township / Ward | Mount Lebanon |
| Est. Birth Year | ~1908 |
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 |
|---|---|---|---|---|
| Geraldine Thompson | Daughter | — | 5 | ~1935 |
| Robert Thompson | Head | — | 32 | ~1908 |
| Winifred Thompson | Spouse | — | 25 | ~1915 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ross R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Son, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 21
Allegheny, Pennsylvania · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Electrical |
| Industry | Appliance Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 32
Allegheny-County, Pennsylvania · implied b. ~1908 — 3 household members
| Surname | Thompson |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Chipper |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | No 5 |
| 1935 Residence | Pennsylvania |
| 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 Robert Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Thompson (~0.92 confidence) and father John Thompson (~0.92 confidence) and father Ross Thompson (~0.92 confidence) and mother Mary Thompson (~0.92 confidence) and mother Blanche Thompson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Thompson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
John Thompson
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Ross Thompson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Thompson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Blanche Thompson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Thompson
Head · 1940 · age 32 · b. ~1908 · Pennsylvania
★ You are viewing this record
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-t0627-03400-00014)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Christian Pfeiffer | 12 | Daughter | — | Pennsylvania |
| 42 | August Pfeiffer | 10 | Son | — | Pennsylvania |
| 43 | William Pfeiffer | 6 | Son | — | Pennsylvania |
| 44 | Catherine Pfeiffer | 3 | Daughter | — | Pennsylvania |
| 45 | Elizabeth Pfeiffer | 1 | Daughter | — | Pennsylvania |
| 46 | Robert Thompson THIS PERSON | 32 | Head | Chipper | Pennsylvania |
| 47 | Winifred Thompson | 25 | Wife | — | England |
| 48 | Geraldine Thompson | 5 | Daughter | — | Pennsylvania |
| 49 | Robert Mcmonagle | 33 | Head | Coal Miner | Pennsylvania |
| 50 | Mary Mcmonagle | 19 | Wife | — | Scotland |
| 51 | Robert Jr. Mcmonagle | 1 | Son | — | Pennsylvania |
| 52 | Alex Robertson | 48 | Head | Coal Miner | Scotland |
| 53 | Mary Robertson | 45 | Wife | — | Pennsylvania |
| 54 | Leroy Robertson | 18 | Son | — | Pennsylvania |
| 55 | Marie Robertson | 16 | Daughter | — | Pennsylvania |
| 56 | Georgina Robertson | 15 | Daughter | — | Pennsylvania |
| 57 | Luciana Robertson | 12 | Daughter | — | Pennsylvania |
| 58 | James Robertson | 11 | Son | — | Pennsylvania |
| 59 | Charles Robertson | 12 | Son | — | Pennsylvania |
| 60 | Cleridice Ciallella | 40 | Head | — | Italy |
| 61 | Joseph Ciallella | 10 | Son | — | Pennsylvania |
| 62 | John Ciallella | 10 | Son | — | Pennsylvania |
| 63 | George Ciallella | 9 | Son | — | Pennsylvania |
| 64 | Rudy Ciallella | 5 | Son | — | Pennsylvania |
| 65 | Embra Ciallella | 17 | Daughter | Maid | Pennsylvania |
| 66 | Rayfard Ciallella | 15 | Son | — | Pennsylvania |
| 67 | Ross De Pasquale | 59 | Lodger | Coal Miner | Italy |
| 68 | Steve Zeman | 65 | Head | Coal Miner | Austria |
| 69 | John Nation | 67 | Head | Coal Miner | Pennsylvania |
| 70 | Mary Nation | 62 | Wife | — | Pennsylvania |
| 71 | Arthur Paul | 32 | Head | Labor | Pennsylvania |
| 72 | Enes Paul | 28 | Wife | — | Pennsylvania |
| 73 | Arthur Jr. Paul | 9 | Son | — | Pennsylvania |
| 74 | Ronald Paul | 4 | Son | — | Pennsylvania |
| 75 | Arlene Paul | 1 | Daughter | — | Pennsylvania |
| 76 | Emil Klepach | 60 | Head | Labor | Poland |
| 77 | Stephen Klepach | 15 | Son | — | Pennsylvania |
| 78 | Anna Yunkosky | 50 | Head | — | Russia |
| 79 | Joseph Yunkosky | 25 | Son | Labor | Pennsylvania |
| 80 | Charles Yunkosky | 22 | Son | Labor | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 5 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)