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William Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this William Hamilton across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Clerk |
| Industry | retail grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 220 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Clerk |
| Township / Ward | New York City |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Margaret Hamilton | Daughter | — | 18 | ~1922 |
| Ann Barnet | Daughter | — | 21 | ~1919 |
| Grace Hamilton | Daughter | — | 15 | ~1925 |
| William Hamilton | Head | — | 54 | ~1886 |
| William Hamilton | Son | — | 23 | ~1917 |
| Florence Hamilton | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Kings, New …
Son, age 3
Kings, New York · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Son, age 13
Kings, New York · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 23
Kings-County, New York · implied b. ~1917 — 6 household members
| Surname | Hamilton |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Occupation | Clerk |
| Industry | retail grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 220 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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: father William Hamilton (~0.92 confidence) and father William Hamilton (~0.92 confidence) and father William Hamilton (~0.92 confidence) and mother Florence Hamilton (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Hamilton
b. ~1886
Source father
● Household
· direct · ~0.92
Father
William Hamilton
b. ~1887
Source father
● Household
· direct · ~0.92
Father
William Hamilton
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Florence Hamilton
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Hamilton
Son · 1940 · age 23 · b. ~1917 · New York
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Sibling
Ann Barnet
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hamilton
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Hamilton
Sibling · 1940 · age 15
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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02581-00402)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Hamilton | 54 | Head | Laborer | New York |
| 2 | Florence Hamilton | 48 | Wife | — | New York |
| 3 | William Hamilton THIS PERSON | 23 | Son | Clerk | New York |
| 4 | Margaret Hamilton | 18 | Daughter | Laundress | New York |
| 5 | Grace Hamilton | 15 | Daughter | — | New York |
| 6 | Ann Barnet | 21 | Daughter | Laundress | New York |
| 7 | Helge Sanders | 31 | Head | Painter | Sweden |
| 8 | Gunhild Sanders | 29 | Wife | — | New York |
| 9 | Elaine Sanders | 3 | Daughter | — | New York |
| 10 | Harold Sanders | 0 | Son | — | New York |
| 11 | Leonard Thomas | 52 | Head | Mechanic | England |
| 12 | Grace Thomas | 58 | Wife | — | England |
| 13 | Doris Thomas | 18 | Daughter | New Worker | New York |
| 14 | Leonard, Jr. Thomas | 14 | Son | — | New York |
| 15 | James Diver | 38 | Head | Longshoreman | Eire |
| 16 | Ellen Diver | 42 | Wife | — | Eire |
| 17 | Henry Diver | 9 | Son | — | New York |
| 18 | Anna Diver | 7 | Daughter | — | New York |
| 19 | James Diver | 5 | Son | — | New York |
| 20 | John Diver | 3 | Son | — | New York |
| 21 | George Diver | 45 | Brother | Longshoreman | Eire |
| 22 | Charles Hughes | 62 | Head | Salesman | New York |
| 23 | Margaret Hughes | 54 | Wife | — | New York |
| 24 | Raymond Hughes | 17 | Son | — | New York |
| 25 | Harriet Curley | 46 | Head | Laundress | New Jersey |
| 26 | David Curley | 18 | Son | Delivery Boy | New York |
| 27 | John Von Allen | 43 | Head | Manager | New York |
| 28 | Marie Von Allen | 47 | Wife | — | New York |
| 29 | Julia Von Allen | 21 | Daughter | Typist | New York |
| 30 | Marie Von Allen | 19 | Daughter | Typist | New York |
| 31 | Catherine Von Allen | 17 | Daughter | New Worker | New York |
| 33 | Arthur George | 74 | Head | Physician | New York |
| 34 | Mary Woolston | 59 | Housekeeper | Housekeeper | England |
| 35 | Leslie Woolston | 37 | Housekeeper's son | Rating Clerk | England |
| 36 | Peter Fitzpatrick | 47 | Head | Loader | Scotland |
| 37 | Catherine Fitzpatrick | 52 | Wife | — | Scotland |
| 38 | Francis Fitzpatrick | 20 | Son | Loader | Scotland |
| 39 | John Fitzpatrick | 17 | Son | — | Scotland |
| 40 | Mary Fitzpatrick | 19 | Daughter | — | Scotland |
Related Census Records
Pedigree Summary
William + 3 siblings
Gen 1 · 4 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)