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Harry Hamilton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bay-County, Michigan
Our Model Tree links this Harry Hamilton across the 1920, 1930 and 1940 US Censuses in Bay-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bay-County, Michigan |
| Surname | Hamilton |
| Given Name | Harry J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Midland |
| 1935 Residence (County) | Midland |
| Additional Details | |
| Occupation | Stock man |
| Industry | Auto Parts mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | C 1 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Stock Man |
| Township / Ward | Bay 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Jonathan Hamilton | Daughter | — | 2 | ~1938 |
| Evelyn Hamilton | Spouse | — | 21 | ~1919 |
| Harry Hamilton | Head | — | 23 | ~1917 |
Census Appearances
1920
Bay, Michigan
Other, age 2
Bay, Michigan · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Harry J |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Bay, Michigan
Other, age 12
Bay, Michigan · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Harry J. |
| Relationship to Head | Gr-Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Bay-County, Michigan
Head, age 23
Bay-County, Michigan · implied b. ~1917 — 3 household members
| Surname | Hamilton |
| Given Name | Harry J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Midland |
| 1935 Residence (County) | Midland |
| Occupation | Stock man |
| Industry | Auto Parts mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | C 1 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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.
Show:
This person
Anchor record
Harry Hamilton
Head · 1940 · age 23 · b. ~1917 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Bay-County, Michigan
Open full size
1940 US Federal Census — Bay-County, Michigan
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-01728-00027)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fern Haas | 43 | daughter | Cleaner | Ohio |
| 42 | William Haas | 19 | grandson | Nya | Ohio |
| 43 | Carlton Richter | 40 | son | Etcher | Ohio |
| 44 | Wanita Richter | 22 | daughter-in-law | Sander | Ohio |
| 45 | Carlene Richter | 1 | granddaughter | — | Michigan |
| 46 | Auto Jaffie | 38 | lodger | Etcher | Ohio |
| 47 | Walter R Humphrey | 34 | Head | Laborer | Illinois |
| 48 | Marie Humphrey | 38 | wife | — | Illinois |
| 49 | Marilyn Humphrey | 9 | daughter | — | Illinois |
| 50 | Robert Humphrey | 3 | son | — | Michigan |
| 51 | Inez Humphrey | 1 | daughter | — | Michigan |
| 52 | Harry J Hamilton THIS PERSON | 23 | Head | Stock Man | Michigan |
| 53 | Evelyn Hamilton | 21 | wife | — | Michigan |
| 54 | Jonathan Hamilton | 2 | daughter | — | Michigan |
| 55 | Laurence Batzloff | 21 | Head | Trucker | Michigan |
| 56 | Alfreda Batzloff | 19 | wife | — | Michigan |
| 57 | Leola Forsyth | 64 | Head | — | Michigan |
| 58 | William Forsyth | 36 | son | Proprietor | Michigan |
| 59 | Reed Forsyth | 19 | grandson | Clerk | Michigan |
| 60 | Leo Gardner | 32 | Head | Cement Worker | Michigan |
| 61 | Lucile Gardner | 28 | wife | Mach Operator | Michigan |
| 62 | Donna Gardner | 6 | daughter | — | Michigan |
| 63 | Maude Wertz | 59 | Head | Nurse | Michigan |
| 64 | Ada Saunders | 50 | Head | Dressmaker | Canada English |
| 65 | Lillian Saunders | 47 | sister | Steno. Clerk | Michigan |
| 67 | Myron Zielinski | 30 | Head | Radio Repair Man | Michigan |
| 68 | Mabel Zielinski | 27 | wife | — | Michigan |
| 69 | Basil White | 33 | Head | Engineer Field | Michigan |
| 70 | Sophia White | 25 | wife | Clerk | Michigan |
| 72 | Kazimir Petrowski | 35 | Head | Assembler | Michigan |
| 73 | Rose Petrowski | 28 | wife | — | Michigan |
| 74 | Annabelle Petrowski | 5 | daughter | — | Michigan |
| 75 | Leonard C Petrowski | 3 | son | — | Michigan |
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)