TJ
Thelma Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Thelma Johnson across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Andrew & Andrew — first a head (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Female
Head
Born: Pennsylvania
Separated
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Separated |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Maid |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1913 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Johnson | Head | — | 27 | ~1913 |
| Mary Jones | Other | — | 50 | ~1890 |
| William Robison | Son | — | 14 | ~1926 |
| Jerry Robison | Son | — | 11 | ~1929 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 5
Allegheny, Pennsylvania · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thelma L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 27
Allegheny-County, Pennsylvania · implied b. ~1913 — 4 household members
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Separated |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Thelma Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Johnson (~0.92 confidence) and father Andrew Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Johnson
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Andrew Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thelma Johnson
Head · 1940 · age 27 · b. ~1913 · 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-t0627-03652-00769)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fletcher O'Neil | 56 | Head | — | Alabama |
| 2 | Jones Negiel | 45 | Lodger | Laborer | Arkansas |
| 3 | Thomas Beaton | 40 | Lodger | Laborer | Ohio |
| 4 | Eugene Davis | 37 | Lodger | Mill Laborer | S. Carolina |
| 5 | Thelma Johnson THIS PERSON | 27 | Head | Maid | Pennsylvania |
| 6 | Mary Jones | 50 | Mother | — | Pennsylvania |
| 7 | William Robison | 14 | Son | — | Pennsylvania |
| 8 | Jerry Robison | 11 | Son | — | Pennsylvania |
| 9 | Mack Turner | 47 | Head | Bricklayer | N. Carolina |
| 10 | Melvin Thomas | 38 | Lodger | — | Texas |
| 11 | Catherine Anderson | 39 | Lodger | — | Pennsylvania |
| 12 | John Washington | 37 | Lodger | Usher | Texas |
| 13 | Edward Mckinley | 7 | Son | — | Pennsylvania |
| 14 | Paul Blackstone | 8 | Son | — | Pennsylvania |
| 15 | Joe Thomas | 43 | Lodger | Laborer | S. Carolina |
| 16 | David Lowes | 48 | Head | Laborer | Florida |
| 17 | Marion Lowes | 26 | Son | Carpenter | Florida |
| 18 | Cannette Lowes | 25 | Wife | — | Pennsylvania |
| 19 | Marlene Lowes | 7 | Daughter | — | Pennsylvania |
| 20 | Shirley Lowes | 6 | Daughter | — | Pennsylvania |
| 21 | Cora Bailey | 47 | Head | — | Alabama |
| 22 | Dan Bailey | 42 | Husband | Laborer | Virginia |
| 23 | Madison Mede | 54 | Lodger | Laborer | Maryland |
| 24 | Alfred Freeman | 37 | Lodger | Steel Mill | S. Arabia |
| 25 | Edward Stuck | 20 | Lodger | — | S. Carolina |
| 26 | Viola Bennet | 53 | Head | — | Virginia |
| 27 | Ben Delener | 71 | Lodger | — | Virginia |
| 28 | Ball Key | 57 | Lodger | — | Washington D.C. |
| 29 | Ethel Smith | 32 | Lodger | Waitress | Ohio |
| 30 | George Smith | 45 | Lodger | Mechanic | Louisiana |
| 31 | Dawson Parsons | 47 | Lodger | Laborer | Georgia |
| 32 | Joseph Hawkins | 50 | Lodger | Gardener | Maryland |
| 33 | Rosa Moon | 35 | Lodger | Maid | Virginia |
| 34 | Cecil Bell | 19 | Lodger | Maid | Virginia |
| 35 | Julia Morgate | 60 | Head | — | Poland |
| 36 | Victoria Morgate | 23 | Daughter | Stenographer | Pennsylvania |
| 37 | Melvin Morgate | 22 | Son | Sales Clerk | Pennsylvania |
| 38 | Wanda Morgate | 19 | Cousin | Stenographer | Pennsylvania |
| 39 | Benny Johnson | 38 | Head | Porter | Virginia |
| 40 | William Madison | 40 | Lodger | Laborer | Texas |
Pedigree Summary
Thelma
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)