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William Hamilton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Hamilton across the 1910, 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 4-person household.
Age 72
b. ~1868
Male
Head
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | HAMILTON |
| Given Name | WILLIAM D. |
| Relationship to Head | HEAD |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | Boston |
| Est. Birth Year | ~1868 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Hamilton | Daughter | — | 64 | ~1876 |
| William Hamilton | Head | — | 72 | ~1868 |
| Paul Hamilton | Son | — | 28 | ~1912 |
| James Hamilton | Son | — | 32 | ~1908 |
Census Appearances
1910
Middlesex, Massachusetts
Head, age 44
Middlesex, Massachusetts · implied b. ~1866 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maine |
| Years Married | 23 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Foreman |
| Industry | Shoe Factory |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1920
Middlesex, Massachusetts
Head, age 53
Middlesex, Massachusetts · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Asst Treasurer |
| Industry | Machinery Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Middlesex, Massachusetts
Head, age 63
Middlesex, Massachusetts · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | William A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 22 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Inspector |
| Industry | Shoe Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Veteran | No |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Suffolk-County, Massachusetts
Head, age 72
Suffolk-County, Massachusetts · implied b. ~1868 — 4 household members
| Surname | HAMILTON |
| Given Name | WILLIAM D. |
| Relationship to Head | HEAD |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Hamilton
Head · 1940 · age 72 · b. ~1868 · Massachusetts
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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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01671-00111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edwin Markowski | 15 | SON | — | Massachusetts |
| 42 | Walter Markowski | 15 | SON | — | Massachusetts |
| 43 | Irene Markowski | 14 | DAUGHTER | — | Massachusetts |
| 44 | Theresa Markowski | 12 | DAUGHTER | — | Massachusetts |
| 45 | Walter Crouch | 39 | HEAD | Fireman | Massachusetts |
| 46 | Gertrude Crouch | 39 | WIFE | — | Massachusetts |
| 47 | Gertrude Crouch | 15 | DAUGHTER | — | Massachusetts |
| 48 | Dorothy Crouch | 13 | DAUGHTER | — | Massachusetts |
| 49 | William Currie | 60 | HEAD | Sales Clerk | Canada English |
| 50 | Amelia Currie | 59 | WIFE | — | Canada English |
| 51 | Leslie Currie | 28 | SON | Manager | Canada English |
| 52 | Maurice Cronin | 45 | HEAD | Plumber | Massachusetts |
| 53 | Marie Cronin | 41 | WIFE | — | Massachusetts |
| 54 | Mary Cronin | 14 | DAUGHTER | — | Massachusetts |
| 55 | Barbara Cronin | 11 | DAUGHTER | — | Massachusetts |
| 56 | William Cronin | 9 | SON | — | Massachusetts |
| 57 | Virginia Cronin | 4 | DAUGHTER | — | Massachusetts |
| 58 | Lewis A. Holliday | 49 | HEAD | Inspector | Kentucky |
| 59 | Mary A. Holliday | 49 | WIFE | — | Massachusetts |
| 60 | Virginia Holliday | 21 | DAUGHTER | Bundle Girl | Massachusetts |
| 61 | William D. Hamilton THIS PERSON | 72 | HEAD | — | Maine |
| 62 | Marjorie Hamilton | 64 | DAUGHTER | — | Maine |
| 63 | James Hamilton | 32 | SON | Shipper | Maine |
| 64 | Paul Hamilton | 28 | SON | Checker | Maine |
| 65 | James J. Connors | 48 | HEAD | Brick Mason | Massachusetts |
| 66 | Ellen Connors | 46 | WIFE | — | Massachusetts |
| 67 | Joseph Connors | 15 | SON | — | Massachusetts |
| 68 | William Connors | 14 | SON | — | Massachusetts |
| 69 | Virginia Connors | 10 | DAUGHTER | — | Massachusetts |
| 70 | William Shields | 36 | HEAD | Salesmanager | Massachusetts |
| 71 | Catherine Shields | 32 | WIFE | — | Massachusetts |
| 72 | Catherine Shields | 14 | DAUGHTER | — | Massachusetts |
| 73 | William Shields | 12 | SON | — | Massachusetts |
| 74 | Joseph Mccormick | 22 | LODGER | Checker | Massachusetts |
| 75 | Pat Shields | 65 | HEAD | — | Eire |
| 76 | Margaret Shields | 63 | WIFE | — | Eire |
| 77 | Margaret Shields | 22 | DAUGHTER | Sales Girl | Massachusetts |
| 78 | Christine Barnett | 68 | LODGER | — | Eire |
| 79 | Donald Marshall | 26 | SON-IN-LAW | Foreman | Ohio |
| 80 | Mary Marshall | 24 | DAUGHTER | — | Massachusetts |
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)