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John Roche — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Roche across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 15-person household.
Age 17
b. ~1923
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Roche |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | Hs 4-3 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1923 |
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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Thomas Roche | Son | — | 27 | ~1913 |
| John Moran | Other | — | 65 | ~1875 |
| Grace Mukahy | Daughter | — | 12 | ~1928 |
| Ella Stockton | Other | — | 66 | ~1874 |
| Blaise Millot | Other | — | 41 | ~1899 |
| Joseph Roche | Son | — | 14 | ~1926 |
| Henry Roche | Son | — | 25 | ~1915 |
| John Roche | Son | — | 17 | ~1923 |
| Annie Roche | Head | — | 56 | ~1884 |
| John Mccarthy | Other | — | 39 | ~1901 |
| Thomas Murray | Other | — | 43 | ~1897 |
| Thomas Mukahy | Son | — | 10 | ~1930 |
| Henry Roche | Spouse | — | 57 | ~1883 |
| George Higley | Other | — | 71 | ~1869 |
| Winslow Dammerritt | Other | — | 65 | ~1875 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 7
Suffolk, Massachusetts · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roakes |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 17
Suffolk-County, Massachusetts · implied b. ~1923 — 15 household members
| Surname | Roche |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Highest Grade | Hs 4-3 |
| 1935 Residence | Same House |
| 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 Roche across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Roche
Son · 1940 · age 17 · b. ~1923 · Massachusetts
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Sibling
Henry Roche
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Roche
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Mukahy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mukahy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Roche
Sibling · 1940 · age 27
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 — 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-t0627-01659-00361)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annie M. Roche | 56 | Head | Housekeeper | Eire |
| 2 | Henry Roche | 57 | Husband | Watchman | Eire |
| 3 | Thomas M. Roche | 27 | Son | Clerk | New York |
| 4 | Henry J. Roche | 25 | Son | Trimmer | New York |
| 5 | John J. Roche THIS PERSON | 17 | Son | — | Massachusetts |
| 6 | Joseph Roche | 14 | Son | — | Massachusetts |
| 7 | Ella Stockton | 66 | Lodger | — | Massachusetts |
| 8 | John Moran | 65 | Lodger | — | Eire |
| 9 | George Higley | 71 | Lodger | — | New Hampshire |
| 10 | Thomas Murray | 43 | Lodger | Laborer | Eire |
| 11 | John Mccarthy | 39 | Lodger | Laborer | Eire |
| 12 | Winslow Dammerritt | 65 | Lodger | — | New Hampshire |
| 13 | Blaise Millot | 41 | Lodger | Laborer | Massachusetts |
| 14 | Grace M. Mukahy | 12 | Daughter | — | Massachusetts |
| 15 | Thomas J. Mukahy | 10 | Son | — | Massachusetts |
| 16 | James J. Regan | 34 | Head | Painter | Massachusetts |
| 17 | Irene A. Regan | 24 | Wife | — | Massachusetts |
| 18 | James A. Regan | 4 | Son | — | Massachusetts |
| 19 | Irene I. Regan | 1 | Daughter | — | Massachusetts |
| 20 | Dorothy A. Regan | 0 | Daughter | — | Massachusetts |
| 21 | Mabel E. Potter | 31 | Head | — | Massachusetts |
| 22 | Margaret J. Potter | 12 | Daughter | — | Massachusetts |
| 23 | Edward J. Potter | 10 | Son | — | Massachusetts |
| 24 | Marjorie E. Potter | 9 | Daughter | — | Massachusetts |
| 25 | John F. Potter | 5 | Son | — | Massachusetts |
| 26 | Sarah Mccormack | 68 | Head | — | Massachusetts |
| 27 | John J. Buckley | 81 | Head | — | Massachusetts |
| 28 | Salvatore Campagna | 47 | Head | Truck Helper & Driver | Italy |
| 29 | Josephine Campagna | 39 | Wife | — | Italy |
| 30 | Conchetta B. Campagna | 19 | Daughter | Typists | Massachusetts |
| 31 | Patrick F. Campagna | 17 | Son | New Worker | Massachusetts |
| 32 | Anna G. Campagna | 15 | Daughter | — | Massachusetts |
| 33 | Frank Campagna | 11 | Son | — | Massachusetts |
| 34 | Louis Campagna | 8 | Son | — | Massachusetts |
| 35 | Jeannette Campagna | 0 | Daughter | — | Massachusetts |
| 36 | Helen R. Hines | 28 | Head | — | Massachusetts |
| 37 | Alexander R. Hines | 40 | Father | General Laborer | Canada-English |
| 38 | Helen M. Hines | 16 | Daughter | — | Massachusetts |
| 39 | Dorothy Hines | 11 | Daughter | — | Massachusetts |
| 40 | Robert A. Hines | 1 | Son | — | 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)