HT
Harold Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montour-County, Pennsylvania
Our Model Tree links this Harold Thomas across the 1920, 1930 and 1940 US Censuses in Montour-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Daniel & David — first a head (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Montour-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Harold W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Danville |
| 1935 Residence (County) | Montour |
| Additional Details | |
| Occupation | Laborer |
| Industry | W. P. A. |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 90 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Danville |
| Est. Birth Year | ~1917 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Bernard Thomas | Son | — | 1 | ~1939 |
| Harold Thomas | Head | — | 23 | ~1917 |
| Clayton Thomas | Son | — | 3 | ~1937 |
| Agatha Thomas | Spouse | — | 20 | ~1920 |
Census Appearances
1920
Montour, Pennsylvania
Son, age 3
Montour, Pennsylvania · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold Jr |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Montour, Pennsylvania
Son, age 13
Montour, Pennsylvania · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Montour-County, Pennsylvania
Head, age 23
Montour-County, Pennsylvania · implied b. ~1917 — 4 household members
| Surname | Thomas |
| Given Name | Harold W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Danville |
| 1935 Residence (County) | Montour |
| Occupation | Laborer |
| Industry | W. P. A. |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 90 |
| Highest Grade | H 1 |
| 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 Harold Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Daniel Thomas (~0.83 confidence) and father David Thomas (~0.83 confidence) and mother Sallie Thomas (~0.83 confidence) and mother Sarah Thomas (~0.83 confidence) and father Harold Thomas (~0.92 confidence) and mother Gladys Thomas (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Father
Daniel Thomas
b. ~1863
Source father>father
● Household
· direct · ~0.83
Father
David Thomas
b. ~1868
Source father>father
● Household
· direct · ~0.83
Mother
Sallie Thomas
b. ~1873
Source father>mother
● Household
· direct · ~0.83
Mother
Sarah Thomas
b. ~1873
Source father>mother
● Household
· direct · ~0.83
Father
Harold Thomas
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Gladys Thomas
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Thomas
Head · 1940 · age 23 · b. ~1917 · 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 — Montour-County, Pennsylvania
Open full size
1940 US Federal Census — Montour-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03587-00185)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John, Jr. Greely | 16 | Son | — | Pennsylvania |
| 42 | Catherine A. Purdy | 42 | Head | — | Pennsylvania |
| 43 | Jane Purdy | 17 | Daughter | — | Pennsylvania |
| 44 | William Purdy | 16 | Son | — | Pennsylvania |
| 45 | John R. Purdy | 14 | Son | — | Pennsylvania |
| 46 | Mary Purdy | 12 | Daughter | — | Pennsylvania |
| 47 | Irene Purdy | 10 | Daughter | — | Pennsylvania |
| 48 | Dorothy Purdy | 8 | Daughter | — | Pennsylvania |
| 49 | Robert Purdy | 6 | Son | — | Pennsylvania |
| 50 | Margaret Purdy | 4 | Daughter | — | Pennsylvania |
| 51 | William Renner | 45 | Head | Laborer | Pennsylvania |
| 52 | George Renner | 86 | Father | — | Pennsylvania |
| 53 | John Pelowie | 36 | Head | Laborer | Pennsylvania |
| 54 | Esther Pelowie | 33 | Wife | Seamstress | Pennsylvania |
| 55 | Elizabeth Pelowie | 16 | Daughter | — | Pennsylvania |
| 56 | Helen Pelowie | 14 | Daughter | — | Pennsylvania |
| 57 | Josephine Pelowie | 12 | Daughter | — | Pennsylvania |
| 58 | Eugene Pelowie | 11 | Son | — | Pennsylvania |
| 59 | Robert Pelowie | 9 | Son | — | Pennsylvania |
| 60 | Albert Pelowie | 9 | Son | — | Pennsylvania |
| 61 | Shirley Pelowie | 6 | Daughter | — | Pennsylvania |
| 62 | Mary V. Purdy | 72 | Head | — | Pennsylvania |
| 63 | Edward Halteman | 64 | Head | Proprietor | Pennsylvania |
| 64 | Fred L. Halteman | 42 | Son | Proprietor | Pennsylvania |
| 65 | Harold W. Thomas THIS PERSON | 23 | Head | Laborer | Pennsylvania |
| 66 | Agatha Thomas | 20 | Wife | — | Pennsylvania |
| 67 | Clayton Thomas | 3 | Son | — | Pennsylvania |
| 68 | Bernard Thomas | 1 | Son | — | Pennsylvania |
| 69 | William Switzer | 44 | Head | Truck Driver | Pennsylvania |
| 70 | Nancy Switzer | 43 | Wife | — | Pennsylvania |
| 71 | James Switzer | 20 | Son | — | Pennsylvania |
| 72 | Genevieve Switzer | 16 | Daughter | — | Pennsylvania |
| 73 | Gordon Switzer | 12 | Son | — | Pennsylvania |
| 74 | Robert Switzer | 9 | Son | — | Pennsylvania |
| 75 | William A. Long | 50 | Head | Laborer | Pennsylvania |
| 76 | Helen M. Long | 45 | Wife | — | Pennsylvania |
| 77 | Clair Long | 16 | Son | — | Pennsylvania |
| 78 | Benjamin Merrill | 43 | Head | Attendant | Pennsylvania |
| 79 | Esther Merrill | 42 | Wife | — | Pennsylvania |
| 80 | Geraldine Merrill | 9 | Daughter | — | Pennsylvania |
Related Census Records
Pedigree Summary
Harold
Gen 1 · 2 parents
~0.92
Gen 2 · 4 grandparents
~0.83
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)