TH
Thelma Harris — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Thelma Harris across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Arthur & Annie — first a daughter (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Harris |
| Given Name | Thelma J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 1840 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Teacher |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1907 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Annie Harris | Spouse | — | 57 | ~1883 |
| Thelma Harris | Daughter | — | 33 | ~1907 |
| Arthur Harris | Head | — | 60 | ~1880 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 13
Allegheny, Pennsylvania · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Thelma J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 23
Allegheny, Pennsylvania · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Thelma J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 33
Allegheny-County, Pennsylvania · implied b. ~1907 — 3 household members
| Surname | Harris |
| Given Name | Thelma J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 1840 |
| Highest Grade | C 2 |
| 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 Harris across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Harris (~0.92 confidence) and mother Annie Harris (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Harris
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Annie Harris
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Harris
Daughter · 1940 · age 33 · b. ~1907 · 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-t0627-03664-00050)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jean Gould | 10 | Daughter | — | Pennsylvania |
| 42 | Nancy Gould | 7 | Daughter | — | Pennsylvania |
| 43 | Arthur Harris | 60 | Head | Steel Worker | Pennsylvania |
| 44 | Annie Harris | 57 | Wife | — | Illinois |
| 45 | Thelma J. Harris THIS PERSON | 33 | Daughter | Teacher | Pennsylvania |
| 46 | Roy T. Clunk | 46 | Head | District Attorney | Pennsylvania |
| 47 | Emilia B. Clunk | 39 | Wife | — | Ohio |
| 48 | Archie M. Godley | 68 | Head | — | Ireland |
| 49 | Sadie L. Godley | 60 | Wife | — | Kentucky |
| 50 | Barbara Goodwin | 58 | In law | — | Kentucky |
| 51 | Charles Bailey | 42 | Head | Conductor | Pennsylvania |
| 52 | Helen Bailey | 35 | Wife | — | Pennsylvania |
| 53 | Charles Jr. Bailey | 2 | Son | — | Pennsylvania |
| 54 | Nora O'Brien | 65 | Mother in law | — | Ireland |
| 55 | Mary O'Brien | 40 | Sister in law | Stenographer | Pennsylvania |
| 56 | Joseph O'Brien | 39 | Brother in law | Doctor | Pennsylvania |
| 57 | Ann O'Brien | 33 | Sister in law | Private Nurse | Pennsylvania |
| 58 | Mary Martin | 60 | Head | — | Poland |
| 59 | Leonard M. Martin | 39 | Son | Traveling Salesman | Pennsylvania |
| 60 | Freda N. Martin | 35 | Daughter | Saleslady | Pennsylvania |
| 61 | Allan Martin | 34 | Son | Druggist | Pennsylvania |
| 62 | Esther Martin | 32 | Daughter | — | Pennsylvania |
| 63 | Margaret Hughes | 44 | Head | Teacher | Pennsylvania |
| 64 | Ruth Crowley | 40 | Sister | Teacher | Pennsylvania |
| 65 | Ruth Ann Crowley | 14 | Niece | — | Pennsylvania |
| 66 | Peggy Crowley | 12 | Niece | — | Pennsylvania |
| 67 | Margaret Ann Hughes | 10 | Daughter | — | Pennsylvania |
| 68 | Clement A. Doland | 51 | Head | Steel Inspect Man | Pennsylvania |
| 69 | Stella M. Doland | 48 | Wife | — | Pennsylvania |
| 70 | Nancy Doland | 23 | Daughter | Stenographer | Pennsylvania |
| 71 | Dorothy Doland | 18 | Daughter | — | Pennsylvania |
| 72 | Robert H. Blackham | 31 | Head | Bookkeeper | Pennsylvania |
| 73 | Helen Blackham | 30 | Wife | — | Pennsylvania |
| 74 | Roberta J. Blackham | 9 | Daughter | — | New York |
| 75 | Norman H. Blackham | 2 | Son | — | Pennsylvania |
| 76 | Carrie B. Hook | 73 | Mother in law | — | Pennsylvania |
| 77 | Sadie E. Gould | 75 | Head | — | Pennsylvania |
| 78 | Mary M. Gould | 48 | Daughter | Office Clerk | Pennsylvania |
| 79 | Gertrude G. Henning | 40 | Daughter | Stenographer | Pennsylvania |
| 80 | Katherine Guthrie | 65 | Head | Dress Fitter | Pennsylvania |
Related Census Records
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)