DT
Donald Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lackawanna-County, Pennsylvania
Our Model Tree links this Donald Thomas across the 1930 and 1940 US Censuses in Lackawanna-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 13-person household.
Age 21
b. ~1919
Male
Son
Born: Arkansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lackawanna-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arkansas |
| 1935 Residence (City) | Olyphant |
| 1935 Residence (County) | Lackawanna |
| Additional Details | |
| Occupation | 104 |
| Industry | Gas Station Attendant |
| Class of Worker | Gas Station |
| Hours Worked | 2 |
| Highest Grade | H 3 |
| 1935 Residence | Same Place |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
| Occupation | 104 |
| Township / Ward | Olyphant |
| Est. Birth Year | ~1919 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Annabelle Thomas | Other | — | ~1940 | |
| Charles Thomas | Head | — | 47 | ~1893 |
| James Thomas | Son | — | ~1940 | |
| Harold Thomas | Son | — | 22 | ~1918 |
| Louis Thomas | Son | — | 17 | ~1923 |
| James Thomas | Other | — | ~1940 | |
| Violet Thomas | Other | — | 18 | ~1922 |
| Ruth Thomas | Daughter | — | 4 | ~1936 |
| Howell Thomas | Son | — | 12 | ~1928 |
| Donald Thomas | Son | — | 21 | ~1919 |
| Florence Thomas | Spouse | — | 47 | ~1893 |
| Florine Thomas | Other | — | 21 | ~1919 |
| Shirley Thomas | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Lackawanna, Pennsylvania
Son, age 11
Lackawanna, Pennsylvania · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arkansas |
| Father's Birthplace | Arkansas |
| Mother's Birthplace | Penna |
| Can Read/Write | Yes |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
1940
Lackawanna-County, Pennsylvania
Son, age 21
Lackawanna-County, Pennsylvania · implied b. ~1919 — 13 household members
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arkansas |
| 1935 Residence (City) | Olyphant |
| 1935 Residence (County) | Lackawanna |
| Occupation | 104 |
| Industry | Gas Station Attendant |
| Class of Worker | Gas Station |
| Hours Worked | 2 |
| Highest Grade | H 3 |
| 1935 Residence | Same Place |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
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 Donald Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Thomas
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
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Sibling
Harold Thomas
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Thomas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howell Thomas
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Thomas
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Thomas
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Thomas
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lackawanna-County, Pennsylvania
Open full size
1940 US Federal Census — Lackawanna-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03526-00409)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Petrochko | 30 | Son | Laborer | Pennsylvania |
| 42 | Anna Petrochko | 26 | Daughter | Operator | Pennsylvania |
| 43 | Helen Petrochko | 24 | Daughter | Operator | Pennsylvania |
| 44 | Charles D. Thomas | 47 | Head | Tracklayer | Arkansas |
| 45 | Florence Thomas | 47 | Wife | — | Pennsylvania |
| 46 | Louis Thomas | 17 | Son | 52 | Pennsylvania |
| 47 | Howell Thomas | 12 | Son | — | Pennsylvania |
| 48 | Shirley Thomas | 7 | Daughter | — | Pennsylvania |
| 49 | Ruth Thomas | 4 | Daughter | — | Pennsylvania |
| 50 | James R. Thomas | 0 | Son | — | Pennsylvania |
| 51 | Harold Thomas | 22 | Son | 11 | Arkansas |
| 52 | Florine Thomas | 21 | Daughter-in-law | — | Pennsylvania |
| 53 | Annabelle Thomas | 0 | Granddaughter | — | Pennsylvania |
| 54 | Donald Thomas THIS PERSON | 21 | Son | 104 | Arkansas |
| 55 | Violet Thomas | 18 | Daughter-in-law | — | Pennsylvania |
| 56 | James H. Thomas | 0 | Grandson | — | Pennsylvania |
| 57 | Sam Lee | 52 | Head | 18 | China |
| 58 | Joseph A. Low | 48 | Head | Physician | Pennsylvania |
| 59 | Eleanor Low | 47 | Wife | — | Delaware |
| 60 | Eleanor Marie Low | 11 | Daughter | — | Pennsylvania |
| 61 | Fred Longauer | 39 | Head | Brake Runner | Pennsylvania |
| 62 | Madeline Longauer | 78 | Mother | — | Germany |
| 63 | William Longauer | 41 | Brother | Electrician | Pennsylvania |
| 64 | Joseph Longauer | 41 | Brother | Laborer | Pennsylvania |
| 65 | John Longauer | 27 | Brother | Truck Driver | Pennsylvania |
| 66 | John Liska | 55 | Head | Tailor | Poland |
| 67 | Katherine Liska | 49 | Wife | — | Poland |
| 68 | Mary Liska | 27 | Daughter | Bookkeeper | Pennsylvania |
| 69 | Joseph Liska | 24 | Son | Helper | Pennsylvania |
| 70 | John Holodick | 42 | Head | Shoe Repair | Italy |
| 71 | Christine Holodick | 32 | Wife | — | Pennsylvania |
| 72 | Katherine Holodick | 15 | Daughter | — | Pennsylvania |
| 73 | Anthony Holodick | 9 | Son | — | Pennsylvania |
| 74 | William Stephenson | 34 | Head | Brakeman | Pennsylvania |
| 75 | Marietta Stephenson | 31 | Wife | — | Pennsylvania |
| 76 | Thomas Stephenson | 8 | Son | — | Pennsylvania |
| 77 | Madeline Stephenson | 2 | Daughter | — | Pennsylvania |
| 78 | Joseph H. Miller | 61 | Head | Hotel Superintendent | Pennsylvania |
| 79 | Katherine Miller | 57 | Wife | Operator | Pennsylvania |
| 80 | Nina Lloyd | 71 | Head | Proprietor | Pennsylvania |
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)