CT
Clarence Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Clarence Thomas across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Ada & James — first a head (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Clarence R. B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Munhall Boro |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Motor inspector |
| Industry | Steel mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1850 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Motor Inspector |
| Township / Ward | Munhall Boro |
| Est. Birth Year | ~1901 |
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 Clarence | Age | Birth yr |
|---|---|---|---|---|
| Alice Thomas | Daughter | — | 15 | ~1925 |
| Clarence Thomas | Head | — | 39 | ~1901 |
| Juanita Hixenburgh | Other | — | 33 | ~1907 |
| Margaret Thomas | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 18
Allegheny, Pennsylvania · implied b. ~1902 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Clarence R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Electrical Engineering |
| Industry | Steel Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 27
Allegheny, Pennsylvania · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Inspector |
| Industry | Steel Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4700 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 39
Allegheny-County, Pennsylvania · implied b. ~1901 — 4 household members
| Surname | Thomas |
| Given Name | Clarence R. B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Munhall Boro |
| 1935 Residence (County) | Allegheny |
| Occupation | Motor inspector |
| Industry | Steel mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1850 |
| Highest Grade | H 3 |
| 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 Clarence Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ada Thomas (~0.92 confidence) and father James Thomas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ada Thomas
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
James Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
Clarence Thomas
Head · 1940 · age 39 · b. ~1901 · 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-t0627-03412-00317)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mae Cook | 34 | Wife | — | Pennsylvania |
| 42 | Matthew Cook | 7 | Son | — | Pennsylvania |
| 43 | Robert A. Cook | 6 | Son | — | Pennsylvania |
| 44 | Rita Elaine Cook | 2 | Daughter | — | Pennsylvania |
| 45 | Lawrence D. Cook | 1 | Son | — | Pennsylvania |
| 46 | Andrew Latzy | 31 | Head | Laborer | Illinois |
| 47 | Anne C. Latzy | 39 | Wife | — | Oklahoma |
| 48 | Maria Ann Latzy | 17 | Daughter | — | Pennsylvania |
| 49 | Edward Latzy | 15 | Son | — | Pennsylvania |
| 50 | Helen Marie Latzy | 12 | Daughter | — | Pennsylvania |
| 51 | Andrew Kurtz | 29 | Brother-in-law | — | Wisconsin |
| 52 | Mary Kurtz | 66 | Mother-in-law | — | Austria |
| 53 | Anthony J. Coonan | 35 | Head | Burner | Pennsylvania |
| 54 | Mary E. Coonan | 36 | Wife | — | Ohio |
| 55 | Martin Coonan | 3 | Son | — | Pennsylvania |
| 56 | Joseph Coonan | 2 | Son | — | Pennsylvania |
| 57 | J. W. Bowser | 49 | Head | Marker | Pennsylvania |
| 58 | Florence A. Bowser | 48 | Daughter | — | Pennsylvania |
| 59 | Helen L. Bowser | 18 | Daughter | — | Pennsylvania |
| 60 | Walter Bowser | 16 | Son | — | Pennsylvania |
| 61 | Mary M. Bowser | 13 | Daughter | — | Pennsylvania |
| 62 | John H. Kirsch | 46 | Head | Conductor | Pennsylvania |
| 63 | Marie E. Kirsch | 46 | Wife | — | Pennsylvania |
| 64 | Charles J. Kirsch | 23 | Son | Clerk | Pennsylvania |
| 65 | Charles J. Zitzman | 53 | Brother-in-law | Chargeman | Pennsylvania |
| 66 | Clarence R. B. Thomas THIS PERSON | 39 | Head | Motor Inspector | Pennsylvania |
| 67 | Margaret Thomas | 37 | Wife | — | Pennsylvania |
| 68 | Alice Mae Thomas | 15 | Daughter | — | Pennsylvania |
| 69 | Juanita Hixenburgh | 33 | Sister-in-law | — | Pennsylvania |
| 70 | Ernest Hamilton | 30 | Head | Cost Clerk | Pennsylvania |
| 71 | Mary Hamilton | 27 | Wife | — | Pennsylvania |
| 72 | Judith L. Hamilton | 2 | Daughter | — | Pennsylvania |
| 73 | H. L. Thomas | 31 | Head | Mechanic | Pennsylvania |
| 74 | Hilda Thomas | 31 | Wife | — | Pennsylvania |
| 75 | Frank Thomas | 9 | Son | — | Pennsylvania |
| 76 | Owen E. Sharpe | 47 | Head | Laborer | Pennsylvania |
| 77 | Bessie M. Sharpe | 42 | Wife | — | Ireland |
| 78 | Charles D. Shafer | 44 | Head | Laborer-Skill | Ohio |
| 79 | Ethel Shafer | 37 | Wife | — | Pennsylvania |
| 80 | Clifton Shafer | 16 | Son | — | Pennsylvania |
Related Census Records
Pedigree Summary
Clarence
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)