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William Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Washington-County, Pennsylvania
Our Model Tree links this William Hamilton across the 1920, 1930 and 1940 US Censuses in Washington-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Katharine & Clarence — first a head (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Pennsylvania |
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lawrence-Hills |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Joy Operator |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1591 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Joy Operator |
| Township / Ward | Lawrencehills |
| Est. Birth Year | ~1912 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Hamilton | Head | — | 28 | ~1912 |
| Lorraine Mcneil | Other | — | 16 | ~1924 |
| Donald Hamilton | Son | — | 4 | ~1936 |
| Edward Hamilton | Son | — | 4 | ~1936 |
| William Hamilton | Son | — | 5 | ~1935 |
| Margaret Hamilton | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Washington, Pennsylvania
Son, age 8
Washington, Pennsylvania · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Washington, Pennsylvania
Son, age 18
Washington, Pennsylvania · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Coal Miner |
| Industry | Loader |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Washington-County, Pennsylvania
Head, age 28
Washington-County, Pennsylvania · implied b. ~1912 — 6 household members
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lawrence-Hills |
| 1935 Residence (County) | Washington |
| Occupation | Joy Operator |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1591 |
| Highest Grade | No 8 |
| 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 William Hamilton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Katharine Hamilton (~0.92 confidence) and father Clarence Hamilton (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Katharine Hamilton
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Clarence Hamilton
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Hamilton
Head · 1940 · age 28 · b. ~1912 · 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 — Washington-County, Pennsylvania
Open full size
1940 US Federal Census — Washington-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03621-00257)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Hamilton THIS PERSON | 28 | Head | Joy Operator | Pennsylvania |
| 42 | Margaret Hamilton | 26 | Wife | — | Pennsylvania |
| 43 | William Hamilton | 5 | Son | — | Pennsylvania |
| 44 | Edward Hamilton | 4 | Son | — | Pennsylvania |
| 45 | Donald Hamilton | 4 | Son | — | Pennsylvania |
| 46 | Lorraine Mcneil | 16 | Servant | — | Pennsylvania |
| 47 | Arthur Richardson | 41 | Head | Motorman | Pennsylvania |
| 48 | Elsie Richardson | 38 | Wife | — | Pennsylvania |
| 49 | Emil Richardson | 19 | Son | Truck Driver | Pennsylvania |
| 50 | Warren Richardson | 15 | Son | — | Pennsylvania |
| 51 | William Richardson | 9 | Son | — | Pennsylvania |
| 52 | James Richardson | 74 | Head | — | Pennsylvania |
| 53 | Ella Richardson | 64 | Wife | — | Pennsylvania |
| 54 | William Van Tassel | 44 | Head | Watchman | Pennsylvania |
| 55 | Julia Van Tassel | 38 | Wife | — | Pennsylvania |
| 56 | Mary E. Van Tassel | 15 | Daughter | — | Pennsylvania |
| 57 | William G. Van Tassel | 13 | Son | — | Pennsylvania |
| 58 | Patricia A. Van Tassel | 7 | Daughter | — | Pennsylvania |
| 59 | George H. V. Van Tassel | 0 | Son | — | Pennsylvania |
| 60 | James Kamp | 82 | Head | Farmer | Pennsylvania |
| 61 | Mary Kamp | 59 | Daughter | — | Pennsylvania |
| 62 | Joseph Kamp | 40 | Son | Motorman | Pennsylvania |
| 63 | James Lawn | 27 | Grandson | Fireman | Pennsylvania |
| 64 | Mary Lawn | 26 | Granddaughter | — | Pennsylvania |
| 65 | Dennis James Lawn | 0 | Grandson | — | Pennsylvania |
| 66 | Sarah Jane Bayer | 72 | Mother | — | Pennsylvania |
| 67 | Ernest N. Bayer | 47 | Son | — | Pennsylvania |
| 68 | John Harriett | 42 | Head | Loader | Pennsylvania |
| 69 | Jennetta Harriett | 34 | Wife | — | Pennsylvania |
| 70 | Betty M. Harriett | 10 | Daughter | — | Pennsylvania |
| 71 | Jack Harriett | 1 | Son | — | Pennsylvania |
| 72 | John Quartine | 35 | Head | Labor | Italy |
| 73 | Catherine Quartine | 29 | Wife | — | Pennsylvania |
| 74 | Shirley Quartine | 4 | Daughter | — | Pennsylvania |
| 75 | John Quartine | 2 | Son | — | Pennsylvania |
| 76 | Katherine Quartine | 0 | Daughter | — | Pennsylvania |
| 77 | Marie Quartine | 64 | Mother | — | Italy |
| 78 | Joseph Quartine | 27 | Son | Laborer | Pennsylvania |
| 79 | Mary Quartine | 20 | Daughter | Clerk | Pennsylvania |
| 80 | Harry Thompson | 67 | Head | — | Ohio |
Pedigree Summary
William
Gen 1 · 2 parents
~0.92
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)