JH
John Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Story-County, Iowa
Our Model Tree links this John Hamilton across the 1920, 1930 and 1940 US Censuses in Story-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Story-County, Iowa |
| Surname | Hamilton |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Ames City |
| 1935 Residence (County) | Story |
| Additional Details | |
| Occupation | mechanic |
| Industry | sewing Co |
| Class of Worker | PW |
| Hours Worked | 27 |
| Income (1939) | 336 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Mechanic |
| Township / Ward | Ames 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Wilma Hamilton | Daughter | — | 1 | ~1939 |
| John Hamilton | Head | — | 23 | ~1917 |
| Alfred Arning | Other | — | 58 | ~1882 |
| John Hamilton | Son | — | ~1940 | |
| Lila Hamilton | Spouse | — | 21 | ~1919 |
Census Appearances
1920
Story, Iowa
Son, age 3
Story, Iowa · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | John Wm. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Nebraska |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Story, Iowa
Son, age 14
Story, Iowa · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Story-County, Iowa
Head, age 23
Story-County, Iowa · implied b. ~1917 — 5 household members
| Surname | Hamilton |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Ames City |
| 1935 Residence (County) | Story |
| Occupation | mechanic |
| Industry | sewing Co |
| Class of Worker | PW |
| Hours Worked | 27 |
| Income (1939) | 336 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 John Hamilton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Hamilton (~0.92 confidence) and father John Hamilton (~0.92 confidence) and mother Melva Hamilton (~0.92 confidence) and mother Wilma Hamilton (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Hamilton
b. ~1887
Source father
● Household
· direct · ~0.92
Father
John Hamilton
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Melva Hamilton
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Wilma Hamilton
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hamilton
Head · 1940 · age 23 · b. ~1917 · Iowa
★ 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 — Story-County, Iowa
Open full size
1940 US Federal Census — Story-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01206-00136)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earl Kirkendall | 45 | Head | Trucker | Iowa |
| 42 | Ruth Kirkendall | 44 | Wife | Home Maker | Iowa |
| 43 | Frances Kirkendall | 18 | daughter | Home Maker | Iowa |
| 44 | Phyllis Kirkendall | 16 | daughter | — | Iowa |
| 45 | Doris Kirkendall | 12 | daughter | — | Iowa |
| 46 | Diana Kirkendall | 10 | daughter | — | Iowa |
| 47 | Richard Kirkendall | 4 | son | — | Iowa |
| 48 | Eugene S. Smith | 37 | Head | Mechanic | Iowa |
| 49 | Sylvia Smith | 35 | wife | Home Maker | Iowa |
| 50 | Kenneth Smith | 17 | son | — | Iowa |
| 51 | Richard Smith | 16 | son | — | Iowa |
| 52 | Robert Smith | 13 | son | — | Iowa |
| 53 | James Smith | 8 | son | — | Iowa |
| 54 | James E. Dooley | 50 | Head | Trucker | Missouri |
| 55 | Lillie M. Dooley | 42 | wife | Seamstress | Missouri |
| 56 | Melvin Dooley | 22 | son | Deliveryman | Missouri |
| 57 | Marvin Dooley | 20 | son | Mechanic | Missouri |
| 58 | Merle Dooley | 18 | son | — | Missouri |
| 59 | Melford Dooley | 17 | son | — | Missouri |
| 60 | Maxine Dooley | 14 | daughter | — | Missouri |
| 61 | Marion Dooley | 12 | son | — | Missouri |
| 62 | Henry Sevde | 45 | Head | Laborer | Iowa |
| 63 | Helen Sevde | 42 | wife | Servant | Iowa |
| 64 | Irine Sevde | 18 | daughter | Trucker | Iowa |
| 65 | Ilene Sevde | 16 | daughter | — | Iowa |
| 66 | Richard Sevde | 10 | son | — | Iowa |
| 67 | John W. Hamilton THIS PERSON | 23 | Head | Mechanic | Iowa |
| 68 | Lila Hamilton | 21 | wife | — | Iowa |
| 69 | Wilma Hamilton | 1 | daughter | — | Iowa |
| 70 | John Hamilton | 0 | son | — | Iowa |
| 71 | Alfred J. Arning | 58 | lodger | Carpenter | Norway |
| 72 | Mrs. T. B. Ames | 67 | Head | Home Maker | Iowa |
| 73 | Gilbert H. Sr. More | 57 | Head | Retired | Ohio |
| 74 | Marion V. More | 48 | wife | Servant | Iowa |
| 75 | Gilbert H. Jr. More | 22 | son | Mechanic | Iowa |
| 76 | Maurice E. Rahm | 25 | Head | Bookkeeping | Iowa |
| 77 | Margaret Rahm | 24 | wife | Home Maker | Iowa |
| 78 | F. T. Moore | 42 | Head | Manager | Indiana |
| 79 | Broome Bertha Moore | 47 | wife | Home Maker | Holland |
| 80 | Joseph Foladare | 30 | Head | Teaching | California |
Pedigree Summary
John
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)