JH
James Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Butler-County, Ohio
Our Model Tree links this James Hamilton across the 1910, 1920, 1930 and 1940 US Censuses in Butler-County, Ohio (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Ohio |
| Surname | Hamilton |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | St. Clair Tp. |
| 1935 Residence (County) | Butler |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Farmer |
| Township / Ward | St Clair Tp |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| John Hamilton | Head | — | 79 | ~1861 |
| Clarence Hamilton | Son | — | 35 | ~1905 |
| James Hamilton | Son | — | 32 | ~1908 |
| Mary Hamilton | Spouse | — | 64 | ~1876 |
Census Appearances
1910
Butler, Ohio
Son, age 2
Butler, Ohio · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Butler, Ohio
Son, age 12
Butler, Ohio · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Butler, Ohio
Son, age 22
Butler, Ohio · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| Age at First Marriage | W |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Butler-County, Ohio
Son, age 32
Butler-County, Ohio · implied b. ~1908 — 4 household members
| Surname | Hamilton |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | St. Clair Tp. |
| 1935 Residence (County) | Butler |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 James Hamilton across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Hamilton (~0.92 confidence) and mother Mary Hamilton (~0.92 confidence) and mother Mary Hamilton (~0.92 confidence) and mother Mary Hamilton (~0.92 confidence) and father John Hamilton (~0.92 confidence) and mother Mary Hamilton (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Hamilton
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Mary Hamilton
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Mary Hamilton
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Hamilton
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
John Hamilton
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mary Hamilton
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Hamilton
Son · 1940 · age 32 · b. ~1908 · Ohio
★ You are viewing this record
Sibling
Clarence Hamilton
Sibling · 1940 · age 35
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 — Butler-County, Ohio
Open full size
1940 US Federal Census — Butler-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03035-00977)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Matilda Augspurger | 74 | Head | — | Ohio |
| 42 | Charles E Darr | 66 | Lodger | Laborer | Ohio |
| 43 | Marion Fetherland | 36 | Head | Pipefitter | Ohio |
| 44 | Maschie Fetherland | 32 | Wife | — | Ohio |
| 45 | William Fetherland | 11 | Son | — | Ohio |
| 46 | Jerry Lee Fetherland | 9 | Son | — | Ohio |
| 47 | Dale Jack Fetherland | 7 | Son | — | Ohio |
| 48 | Emerick Hamrick | 53 | Head | Machinist | Czechoslovakia |
| 49 | Elizabeth H Hamrick | 43 | Wife | — | Germany |
| 50 | Betty F Hamrick | 22 | Daughter | Beautician | Ohio |
| 51 | Robert Dick Hamrick | 20 | Son | Newsworker | Ohio |
| 52 | Helen Jean Hamrick | 17 | Daughter | — | Ohio |
| 53 | Arnold Glenn Hamrick | 8 | Son | — | Ohio |
| 54 | Alfred G Baumann | 21 | Head | Farmer | Ohio |
| 55 | Elizabeth E Baumann | 20 | Wife | — | Ohio |
| 56 | Jacob W Beder | 57 | Head | Farmer | Ohio |
| 57 | Clara C Beder | 61 | Wife | — | Ohio |
| 58 | Charles Kirtley | 69 | Head | Farmer | Ohio |
| 59 | Bessie Kirtley | 57 | Wife | — | Ohio |
| 60 | Howard Kirtley | 24 | Son | Laborer | Ohio |
| 61 | James Burns | 45 | Lodger | Laborer | Pennsylvania |
| 62 | Cora Winterstein | 64 | Head | — | Ohio |
| 63 | Willard Winterstein | 32 | Son | Farmer | Ohio |
| 64 | Gordon Winterstein | 30 | Son | Farmer | Ohio |
| 65 | Luther J Paulin | 40 | Head | Farmer | Ohio |
| 66 | Helen B Paulin | 34 | Wife | — | Ohio |
| 67 | Mary Caroline Paulin | 4 | Daughter | — | Ohio |
| 68 | Clayton T Kerns | 26 | Head | Millwright | Ohio |
| 69 | Gladys Kerns | 24 | Wife | — | Kentucky |
| 70 | Bertram Johnson | 43 | Head | Iron Molder | Ohio |
| 71 | Ernest C Fisher | 43 | Head | Pipe Fitter | Ohio |
| 72 | Irene Iona Fisher | 43 | Wife | — | Ohio |
| 73 | Lloyd B Fisher | 18 | Son | — | Ohio |
| 74 | Robert Bonnell | 73 | Head | — | Indiana |
| 75 | Minnie Elbe Bonnell | 63 | Daughter | — | Indiana |
| 76 | John A Hamilton | 79 | Head | — | Ohio |
| 77 | Mary Hamilton | 64 | Wife | — | Ohio |
| 78 | Clarence Hamilton | 35 | Son | Farmer | Ohio |
| 79 | James Hamilton THIS PERSON | 32 | Son | Farmer | Ohio |
| 80 | John C Vogel | 50 | Head | Farmer | Ohio |
Pedigree Summary
James + 1 sibling
Gen 1 · 6 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)