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Lewis Thomas — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Lewis Thomas across the 1920, 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 6-person household.
Age 50
b. ~1870
Male
Head
Born: Wales
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Thomas |
| Given Name | Lewis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Wales |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Additional Details | |
| Occupation | Foreman |
| Industry | Steel mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Welsh |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Wales |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | wales |
| Occupation | Foreman |
| Township / Ward | Munhall Borough |
| Est. Birth Year | ~1870 |
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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Lewis | Age | Birth yr |
|---|---|---|---|---|
| Harold Thomas | Son | — | 9 | ~1911 |
| David Thomas | Son | — | 2 | ~1918 |
| Margaret Thomas | Spouse | — | 41 | ~1879 |
| Lewis Thomas | Head | — | 50 | ~1870 |
| Elizabeth Mcclean | Other | — | 23 | ~1897 |
| Hayden Thomas | Son | — | 5 | ~1915 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 50
Allegheny, Pennsylvania · implied b. ~1870 — 6 household members
| Surname | Thomas |
| Given Name | Lewis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Wales |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | Foreman |
| Industry | Steel mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Welsh |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Wales |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | wales |
1930
Allegheny, Pennsylvania
Head, age 60
Allegheny, Pennsylvania · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Levi |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Wales |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 22 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | Fireman |
| Industry | Steel Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
1940
Allegheny-County, Pennsylvania
Head, age 70
Allegheny-County, Pennsylvania · implied b. ~1870 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Levi |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Wales |
| 1935 Residence (City) | Munhall borough |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same House |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
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 Lewis Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lewis Thomas
Head · 1920 · age 50 · b. ~1870 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1515unit:0688)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael | 25 | Son | Laborer | Pennsylvania |
| 2 | Margaret | 22 | Daughter | Stenographer | Pennsylvania |
| 3 | Peter | 20 | Son | None | Pennsylvania |
| 4 | Catherine | 17 | Daughter | None | Pennsylvania |
| 5 | Martin | 31 | Son | Laborer | Pennsylvania |
| 6 | Catherine | 27 | Wife | None | Pennsylvania |
| 7 | Lewis Thomas THIS PERSON | 50 | Head | Foreman | Wales |
| 8 | Margaret Thomas | 41 | Wife | None | England |
| 9 | Harold Thomas | 9 | Son | None | Pennsylvania |
| 10 | Hayden Thomas | 5 | Son | None | Pennsylvania |
| 11 | David Thomas | 2 | Son | None | Pennsylvania |
| 12 | Elizabeth Mcclean | 23 | Boarder | Servant | Pennsylvania |
| 13 | Walter Stafford | 40 | Head | None | Wales |
| 14 | Alma Stafford | 32 | Wife | None | Ohio |
| 15 | Ella May Bulmer | 32 | Boarder | Teacher | Pennsylvania |
| 16 | Albert Stafford | 4 | Daughter | None | Pennsylvania |
| 17 | Benjamin Slaven | 43 | Head | Crane Man | New York |
| 18 | Isabel Slaven | 43 | Wife | None | New York |
| 19 | Anna Bray | 45 | Boarder | Publicity Worker | New York |
| 20 | William Brown | 41 | Head | Clerk | Pennsylvania |
| 21 | Lelia Brown | 40 | Wife | None | Pennsylvania |
| 22 | William Brown | 11 | Son | None | Pennsylvania |
| 23 | Christ Quigley | 70 | Head | Engineer | Ireland |
| 24 | Ellen Quigley | 64 | Wife | None | England |
| 25 | James Quigley | 33 | Son | Laborer | Pennsylvania |
| 26 | Nettie Quigley | 36 | Daughter | Telephone Operator | Pennsylvania |
| 27 | William Mcneil | 61 | Head | Laborer | Scotland |
| 28 | Janet Mcneil | 58 | Wife | None | Scotland |
| 29 | Jean Mcneil | 20 | Daughter | Stenographer | Pennsylvania |
| 30 | Alfred Perkins | 27 | Head | Clerk | Pennsylvania |
| 31 | Agnes Perkins | 22 | Wife | None | Pennsylvania |
| 32 | Richard Barthol | 47 | Head | Laborer | Germany |
| 33 | Katie Barthol | 48 | Wife | None | Germany |
| 34 | Lillian Barthol | 13 | Daughter | None | Pennsylvania |
| 35 | Robert Robertson | 57 | Head | Machinist | Scotland |
| 36 | Jeanie Robertson | 54 | Wife | None | Scotland |
| 37 | Nellie Robertson | 23 | Daughter | Teacher | Pennsylvania |
| 38 | Joseph Smith | 58 | Head | Laborer | England |
| 39 | Bert Smith | 27 | Son | Laborer | Pennsylvania |
| 40 | Alice Smith | 16 | Daughter | None | Pennsylvania |
| 41 | Charles H Johnson | 45 | Head | Clerk | Pennsylvania |
| 42 | Essie Johnson | 34 | Wife | None | Pennsylvania |
| 43 | Dorothy Johnson | 5 | Daughter | None | Pennsylvania |
| 44 | Charles Johnson | 3 | Son | None | Pennsylvania |
| 45 | Robert Johnson | 1 | Son | None | Pennsylvania |
| 46 | Albert Riley | 44 | Head | Layer-Off | England |
| 47 | Margaret Riley | 45 | Wife | None | Pennsylvania |
| 48 | Ruth Riley | 16 | Daughter | None | Pennsylvania |
| 49 | Clarence Riley | 19 | Son | Laborer | Pennsylvania |
| 50 | Robert Sigley | 45 | Head | Laborer | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)