IT
Isaac Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fayette-County, Pennsylvania
Our Model Tree links this Isaac Thomas across the 1920, 1930 and 1940 US Censuses in Fayette-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Fayette-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | South Union Twp. |
| 1935 Residence (County) | Fayette |
| Additional Details | |
| Occupation | Laborer |
| Industry | Around Coal Mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 800 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | South Union Twp |
| Est. Birth Year | ~1897 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Bernadette Thomas | Daughter | — | 4 | ~1936 |
| Isaac Thomas | Head | — | 43 | ~1897 |
| Ferne Thomas | Daughter | — | 17 | ~1923 |
| Clayton Thomas | Son | — | 13 | ~1927 |
| Sidna Thomas | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Philadelphia, Pennsylvania
Other, age 22
Philadelphia, Pennsylvania · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac M. |
| Relationship to Head | Step-son |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Sailor |
| Industry | Merchant Ship |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Cambria, Pennsylvania
Other, age 32
Cambria, Pennsylvania · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Toley Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Fayette-County, Pennsylvania
Head, age 43
Fayette-County, Pennsylvania · implied b. ~1897 — 5 household members
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | South Union Twp. |
| 1935 Residence (County) | Fayette |
| Occupation | Laborer |
| Industry | Around Coal Mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 800 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Isaac Thomas across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Isaac Thomas
Head · 1940 · age 43 · b. ~1897 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Fayette-County, Pennsylvania
Open full size
1940 US Federal Census — Fayette-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03507-00355)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tillie Holland | 42 | Wife | — | Pennsylvania |
| 2 | Charles F Holland | 18 | Son | — | Pennsylvania |
| 3 | Robert F Holland | 15 | Son | — | Pennsylvania |
| 4 | Mildred M Holland | 13 | Daughter | — | Pennsylvania |
| 5 | Frank Gleason | 32 | Head | Farmer | Pennsylvania |
| 6 | Lucy Gleason | 32 | Wife | — | West Virginia |
| 7 | Patricia Lou Gleason | 8 | Daughter | — | Pennsylvania |
| 8 | John Patrick Gleason | 5 | Son | — | Pennsylvania |
| 9 | Connie Lou Gleason | 2 | Daughter | — | Pennsylvania |
| 10 | Louis Williams | 37 | Head | Superintendent | Pennsylvania |
| 11 | Grace W. Williams | 37 | Wife | — | Pennsylvania |
| 12 | Betty Louise Williams | 3 | Daughter | — | Pennsylvania |
| 13 | S. S. Snider | 53 | Head | Farmer | Pennsylvania |
| 14 | Alvira Snider | 53 | Wife | — | Pennsylvania |
| 15 | Fannie S. Fuller | 82 | Mother-in-law | — | New York |
| 16 | Fuller Mccowan | 20 | Nephew | Clerk | Pennsylvania |
| 17 | Ed Jackson | 55 | Head | Farmer | Pennsylvania |
| 18 | Cora Jackson | 54 | Wife | — | Pennsylvania |
| 19 | Dorothy Jackson | 25 | Daughter | Typist | Pennsylvania |
| 20 | Margaret Jackson | 20 | Daughter | Clerk | Pennsylvania |
| 21 | Robert Jackson | 18 | Son | — | Pennsylvania |
| 22 | William Jackson | 16 | Son | — | Pennsylvania |
| 23 | James Franks | 32 | Head | Coal Hauler | Pennsylvania |
| 24 | Mabel Franks | 30 | Wife | — | Pennsylvania |
| 25 | Ella Williams | 69 | Head | Seamstress | Pennsylvania |
| 26 | Abraham James Moore | 44 | Head | Trucker | Pennsylvania |
| 27 | Helen M. Moore | 34 | Wife | — | Pennsylvania |
| 28 | Michael Moore | 7 | Son | — | Pennsylvania |
| 29 | Abraham Moore | 34 | Lodger | Coal Digger | Pennsylvania |
| 30 | Cyril Ruble | 32 | Head | Visitor | Pennsylvania |
| 31 | Catherine Ruble | 26 | Wife | — | Pennsylvania |
| 32 | Thomas Ruble | 1 | Son | — | Pennsylvania |
| 33 | Elliott David Campbell | 53 | Head | Laborer | Pennsylvania |
| 34 | Sarah Campbell | 53 | Wife | — | Pennsylvania |
| 35 | Isaac Thomas THIS PERSON | 43 | Head | Laborer | Maryland |
| 36 | Sidna Thomas | 34 | Wife | — | Pennsylvania |
| 37 | Ferne Thomas | 17 | Daughter | — | Maryland |
| 38 | Clayton Thomas | 13 | Son | — | Pennsylvania |
| 39 | Bernadette Thomas | 4 | Daughter | — | Pennsylvania |
| 40 | Milo M. Fleming | 37 | Head | Teacher | Indiana |
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)