RT
Ralph Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this Ralph Thomas across the 1920, 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Louis & Louis — first a son (b.~1919), then head of a 15-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Hazleton City |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Hazleton City |
| 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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Rita Thomas | Daughter | — | 14 | ~1926 |
| Emily Gatras | Spouse | — | 24 | ~1916 |
| Mary Thomas | Daughter | — | ~1940 | |
| Louis Thomas | Son | — | 19 | ~1921 |
| Anna Thomas | Daughter | — | 18 | ~1922 |
| Isidore Thomas | Son | — | 12 | ~1928 |
| Morris Thomas | Son | — | 23 | ~1917 |
| Clara Thomas | Daughter | — | 17 | ~1923 |
| Christina Thomas | Daughter | — | 25 | ~1915 |
| Ralph Thomas | Son | — | 21 | ~1919 |
| Louis Thomas | Head | — | 52 | ~1888 |
| Alfonso Thomas | Son | — | 10 | ~1930 |
| Nellie Thomas | Daughter | — | 22 | ~1918 |
| Sylvia Thomas | Daughter | — | 4 | ~1936 |
| Mary Thomas | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Luzerne, Pennsylvania
Son, age
Luzerne, Pennsylvania · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Son, age 11
Luzerne, Pennsylvania · implied b. ~1919 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Birthplace | Pennsylvania |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Son, age 21
Luzerne-County, Pennsylvania · implied b. ~1919 — 15 household members
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Hazleton City |
| 1935 Residence (County) | Luzerne |
| Highest Grade | H 4 |
| 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 Ralph Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Louis Thomas (~0.92 confidence) and father Louis Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence) and mother Emily Gatras (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Father
Louis Thomas
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Louis Thomas
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Emily Gatras
b. ~1916
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Ralph Thomas
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Alfonso Thomas
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isidore Thomas
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Thomas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvia Thomas
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thomas
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Thomas
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Thomas
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Thomas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Thomas
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Thomas
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christina Thomas
Sibling · 1940 · age 25
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03553-00020)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leonard Swank | 44 | Head | Labor | Pennsylvania |
| 2 | Anna Swank | 45 | Wife | — | Pennsylvania |
| 3 | Donald Swank | 13 | Son | — | Pennsylvania |
| 4 | Doris Swank | 12 | Daughter | — | Pennsylvania |
| 5 | William Swank | 9 | Son | — | Pennsylvania |
| 6 | Louis Thomas | 52 | Head | Truck Driver | Italy |
| 7 | Mary Thomas | 47 | Wife | — | Italy |
| 8 | Christina Thomas | 25 | Daughter | — | Pennsylvania |
| 9 | Morris Thomas | 23 | Son | Labor | Pennsylvania |
| 10 | Nellie Thomas | 22 | Daughter | Colors | Pennsylvania |
| 11 | Ralph Thomas THIS PERSON | 21 | Son | — | Pennsylvania |
| 12 | Louis Thomas | 19 | Son | Labor | Pennsylvania |
| 13 | Anna Thomas | 18 | Daughter | — | Pennsylvania |
| 14 | Clara Thomas | 17 | Daughter | — | Pennsylvania |
| 15 | Rita Thomas | 14 | Daughter | — | Pennsylvania |
| 16 | Isidore Thomas | 12 | Son | — | Pennsylvania |
| 17 | Alfonso Thomas | 10 | Son | — | Pennsylvania |
| 18 | Sylvia Thomas | 4 | Daughter | — | Pennsylvania |
| 19 | Mary Thomas | 0 | Daughter | — | Pennsylvania |
| 20 | Emily Gatras | 24 | Wife | — | Pennsylvania |
| 21 | John Gatras | 27 | Head | Labor | Pennsylvania |
| 22 | John Jr Gatras | 2 | Son | — | Pennsylvania |
| 23 | Thomas Gatras | 0 | Son | — | Pennsylvania |
| 24 | Mary Gatras | 59 | Aunt | Cook | Pennsylvania |
| 25 | Joseph Palfavor | 35 | Lodger | Labor | Pennsylvania |
| 26 | Anna Clay | 72 | Head | — | Pennsylvania |
| 27 | Henry J. Clay | 77 | Head | — | Pennsylvania |
| 28 | Ada Clay | 48 | Daughter | Seamstress | Pennsylvania |
| 29 | Robert Clay | 45 | Son | Labor | Pennsylvania |
| 30 | Henry J. Deihl | 34 | Head | Agent | Pennsylvania |
| 31 | Beatrice Deihl | 30 | Wife | — | Pennsylvania |
| 32 | Beatrice R Deihl | 12 | Daughter | — | Pennsylvania |
| 33 | George Deihl | 10 | Son | — | Pennsylvania |
| 34 | Mary Louise Deihl | 8 | Daughter | — | Pennsylvania |
| 35 | William Jamison | 66 | Head | Plumber | Pennsylvania |
| 36 | Maude Jamison | 64 | Wife | — | Pennsylvania |
| 37 | Frank Kross | 41 | Head | Dept. Buyer | Pennsylvania |
| 38 | Olga Kross | 42 | Wife | — | Pennsylvania |
| 39 | Francis Kross | 18 | Son | — | Pennsylvania |
| 40 | Robert Kross | 12 | Son | — | Vermont |
Related Census Records
Pedigree Summary
Ralph + 11 siblings
Gen 1 · 5 parents
~0.86
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)