HH
Harry Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Harry Hamilton across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Hannah — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Hamilton |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | machinist operator |
| Industry | Conveyor-Stoker Mfg |
| Class of Worker | Pw |
| Hours Worked | 40 |
| Income (1939) | 282 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machinist Operator |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Vlasta Hamilton | Spouse | — | 31 | ~1909 |
| Robert Hamilton | Son | — | 7 | ~1933 |
| Harry Hamilton | Head | — | 33 | ~1907 |
Census Appearances
1920
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Harry G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 23
Cook, Illinois · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Shipping Clerk |
| Industry | Wholesale Drug Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 33
Cook-County, Illinois · implied b. ~1907 — 3 household members
| Surname | Hamilton |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | machinist operator |
| Industry | Conveyor-Stoker Mfg |
| Class of Worker | Pw |
| Hours Worked | 40 |
| Income (1939) | 282 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Harry 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 mother Hannah Hamilton (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Hamilton
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Hannah Hamilton
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Hamilton
Head · 1940 · age 33 · b. ~1907 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00988-00430)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Sokolski | 53 | Head | Iron Moulder | Poland |
| 2 | Anna Sokolski | 56 | Wife | H | Poland |
| 3 | Emily Sokolski | 27 | Daughter | Comptometer Operator | Illinois |
| 4 | Joseph Sokolski | 23 | Son | Machine Operator | Illinois |
| 5 | Evelyn Sokolski | 16 | Daughter | S | Illinois |
| 6 | Sophia Jezovik | 30 | Daughter | H | Illinois |
| 7 | James Jezovik | 2 | Grandson | — | Illinois |
| 8 | Andrew Golabek | 38 | Head | Engraver | Poland |
| 9 | Helen Golabek | 30 | Wife | Alteration | Illinois |
| 10 | Andrew Jr Golabek | 6 | Son | — | Illinois |
| 11 | Walter Kmiecik | 24 | Head | Cashier | Illinois |
| 12 | Harriette Kmiecik | 25 | Wife | Packer | Illinois |
| 13 | Harry Hamilton THIS PERSON | 33 | Head | Machinist Operator | Illinois |
| 14 | Vlasta Hamilton | 31 | Wife | Telephone Operator | Poland |
| 15 | Robert Hamilton | 7 | Son | — | Illinois |
| 16 | Stanley Miklasz | 39 | Head | Conductor | Illinois |
| 17 | Irene Miklasz | 28 | Wife | Curtain Stretcher | Illinois |
| 18 | Extra Line Miklasz | None | — | — | — |
| 19 | Frank Rogus | 37 | Head | Plate Maker | Illinois |
| 20 | Josephine Rogus | 28 | Wife | H | Illinois |
| 21 | Mary Janiczek | 49 | Head | H | Poland |
| 22 | Felix Janiczek | 23 | Son | U | Illinois |
| 23 | Marion Janiczek | 20 | Son | Shipping Clerk | Illinois |
| 24 | Frank Janiczek | 16 | Son | S | Illinois |
| 25 | Joseph Burczyk | 37 | Head | Pressman | Illinois |
| 26 | Cecilia Burczyk | 40 | Wife | H | Indiana |
| 27 | John Burczyk | 13 | Son | — | Illinois |
| 28 | Joseph Jr Burczyk | 10 | Son | — | Illinois |
| 29 | Alice Skowronski | 49 | Head | Twister | Poland |
| 30 | Matthew Skowronski | 23 | Son | Machine Operator | Illinois |
| 31 | Regina Skowronski | 20 | Daughter | U | Illinois |
| 32 | Frances Budychowski | 60 | Head | H | Poland |
| 33 | Frank Majewski | 37 | Head | Stitcher | Illinois |
| 34 | Helen Majewski | 38 | Wife | H | Illinois |
| 35 | Eugene Majewski | 15 | Son | S | Illinois |
| 36 | Frank Jr Majewski | 12 | Son | — | Illinois |
| 37 | Roman Majewski | 6 | Son | — | Illinois |
| 38 | Frank Morys | 37 | Head | Finisher | Illinois |
| 39 | Irene Morys | 29 | Wife | H | Illinois |
| 40 | Constance Morys | 5 | Daughter | — | Illinois |
Pedigree Summary
Harry
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)