JH
John Hancock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this John Hancock across the 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Hancock |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | R |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Pennsylvania |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Brockton |
| Est. Birth Year | ~1925 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Hancock | Son | — | 15 | ~1925 |
| Martin Hancock | Son | — | 3 | ~1937 |
| Joseph Hancock | Son | — | 2 | ~1938 |
| Edward Hancock | Head | — | 29 | ~1911 |
| Mildred Hancock | Daughter | — | 27 | ~1913 |
| Edward Hancock | Son | — | 12 | ~1928 |
| Richard Hancock | Son | — | 7 | ~1933 |
| Ella Hancock | Other | — | 65 | ~1875 |
| Morris Hancock | Son | — | 11 | ~1929 |
| Colleen Hancock | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 5
Suffolk, Massachusetts · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hancock |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Son, age 15
Plymouth-County, Massachusetts · implied b. ~1925 — 10 household members
| Surname | Hancock |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | R |
| Highest Grade | Hs 2 |
| 1935 Residence | Pennsylvania |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Hancock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hancock
Son · 1940 · age 15 · b. ~1925 · Massachusetts
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Sibling
Martin Hancock
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Hancock
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Hancock
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Hancock
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Hancock
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Colleen Hancock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hancock
Sibling · 1940 · age 2
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 — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01636-00659)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nicholas Poulin | 51 | Head | Xoxo | Massachusetts |
| 2 | George Poulin | 20 | Son | Barber | Massachusetts |
| 3 | Theresa Poulin | 18 | Daughter | Dresser | Massachusetts |
| 4 | Peter Poulin | 16 | Son | — | Massachusetts |
| 5 | Lawrence Poulin | 12 | Son | — | Massachusetts |
| 6 | Bessie Poulin | 70 | Mother | — | Greece |
| 7 | James Mcnamara | 55 | Head | Laborer | Massachusetts |
| 8 | George Mcnamara | 22 | Son | Laborer | Massachusetts |
| 9 | Mabel Mcnamara | 16 | Daughter | — | Massachusetts |
| 10 | Edward Hancock | 29 | Head | Mechanic | Maine |
| 11 | John Hancock THIS PERSON | 15 | Son | — | Massachusetts |
| 12 | Edward Jr. Hancock | 12 | Son | — | Massachusetts |
| 13 | Morris W. Hancock | 11 | Son | — | Massachusetts |
| 14 | Richard F. Hancock | 7 | Son | — | New York |
| 15 | Martin A. Hancock | 3 | Son | — | New York |
| 16 | Joseph P. Hancock | 2 | Son | — | Pennsylvania |
| 17 | Colleen A. Hancock | 5 | Daughter | — | Massachusetts |
| 18 | Mildred Hancock | 27 | Daughter | — | Massachusetts |
| 19 | Ella Hancock | 65 | Mother | — | Maine |
| 20 | Dominic Altieri | 43 | Head | — | Italy |
| 21 | Lucy Altieri | 36 | Wife | — | Italy |
| 22 | Marie Altieri | 9 | Daughter | — | Massachusetts |
| 23 | Josephine Altieri | 8 | Daughter | — | Massachusetts |
| 24 | Christina Altieri | 5 | Daughter | — | Massachusetts |
| 25 | Michael Altieri | 2 | Son | — | Massachusetts |
| 26 | Tony Altieri | 1 | Son | — | Massachusetts |
| 27 | Mary Work | 42 | Head | Veg. Peeler | Massachusetts |
| 28 | Lillian Work | 17 | Daughter | — | Illinois |
| 30 | Mary Thibeault | 42 | Head | — | Massachusetts |
| 31 | George Thibeault | 18 | Son | New Worker | Massachusetts |
| 32 | Jack Thibeault | 15 | Son | — | Massachusetts |
| 33 | Edward Thibeault | 7 | Son | — | Massachusetts |
| 34 | Rose Thibeault | 5 | Daughter | — | Massachusetts |
| 35 | Jane Voyer | 48 | Head | — | Canada French |
| 36 | Gertrude Voyer | 14 | Daughter | — | Canada French |
| 37 | Jack Voyer | 17 | Son | — | Maine |
| 38 | Jacqueline Voyer | 16 | Daughter | — | Massachusetts |
| 39 | Rachael Voyer | 14 | Daughter | — | Massachusetts |
| 40 | Laura Tucker | 37 | Head | — | 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)