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John Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Norfolk-County, Massachusetts
Our Model Tree links this John Mahoney across the 1930 and 1940 US Censuses in Norfolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 22-person household.
Age 12
b. ~1928
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Norfolk-County, Massachusetts |
| Surname | Mahoney |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford Town |
| 1935 Residence (County) | Norfolk |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford Town |
| Est. Birth Year | ~1928 |
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.
22 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Claire Mcduggan | Daughter | — | 1 | ~1939 |
| Elizabeth Mahoney | Daughter | — | 16 | ~1924 |
| Norma Cantoreggi | Daughter | — | 6 | ~1934 |
| Pascal Cantoreggi | Head | — | 38 | ~1902 |
| Joseph Mcduggan | Other | — | 31 | ~1909 |
| Claude Rogers | Other | — | 43 | ~1897 |
| Charles Browning | Other | — | 50 | ~1890 |
| Elton Glass | Other | — | 44 | ~1896 |
| Eva Le Clerc | Other | — | 42 | ~1898 |
| Mabel Abbott | Other | — | 34 | ~1906 |
| James Mahoney | Other | — | 45 | ~1895 |
| James Mahoney | Son | — | 14 | ~1926 |
| Robert Cantoreggi | Son | — | 4 | ~1936 |
| John Mahoney | Son | — | 12 | ~1928 |
| Joseph Mcduggan | Son | — | 9 | ~1931 |
| Graham Rogers | Son | — | 20 | ~1920 |
| Gertie Browning | Spouse | — | 53 | ~1887 |
| Edith Cantoreggi | Spouse | — | 32 | ~1908 |
| Isabel Rogers | Spouse | — | 40 | ~1900 |
| Lillian Glass | Spouse | — | 40 | ~1900 |
| Olive Mcduggan | Spouse | — | 31 | ~1909 |
| Elizabeth Mahoney | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Norfolk, Massachusetts
Son, age 2
Norfolk, Massachusetts · implied b. ~1928 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Norfolk-County, Massachusetts
Son, age 12
Norfolk-County, Massachusetts · implied b. ~1928 — 22 household members
| Surname | Mahoney |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford Town |
| 1935 Residence (County) | Norfolk |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Mahoney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mahoney
Son · 1940 · age 12 · b. ~1928 · Massachusetts
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Sibling
James Mahoney
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claire Mcduggan
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcduggan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mahoney
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norma Cantoreggi
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Graham Rogers
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Cantoreggi
Sibling · 1940 · age 4
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 — Norfolk-County, Massachusetts
Open full size
1940 US Federal Census — Norfolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01627-00275)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Karl T. Northland | 51 | Head | Superintendent | Norway |
| 2 | Evelyn G. Northland | 50 | Wife | — | Massachusetts |
| 3 | Karl T. Jr. Northland | 19 | Son | — | Massachusetts |
| 4 | Arthur G. Sampson | 35 | Head | Physician | Massachusetts |
| 5 | Caroline M. Sampson | 31 | Wife | — | Massachusetts |
| 6 | Richard Baratt | 48 | Employee | Physician | California |
| 7 | Rebecca Baratt | 45 | Wife | — | Pennsylvania |
| 8 | Theodore Baratt | 15 | Son | — | Massachusetts |
| 9 | Henry G. Baratt | 10 | Son | — | Massachusetts |
| 10 | Harry N. Gardner | 31 | Head | Physician | Pennsylvania |
| 11 | Dorothy S. Gardner | 30 | Wife | — | Pennsylvania |
| 12 | Harry N. Jr. Gardner | 2 | Son | — | Massachusetts |
| 13 | Henry Benjamin | 34 | Employee | Physician | Massachusetts |
| 14 | Jeanette K. Benjamin | 34 | Wife | — | Poland |
| 15 | Ruth A. Benjamin | 6 | Daughter | — | Massachusetts |
| 16 | Vicente Bavarro | 38 | Head | Physician | Philippine |
| 17 | Adeline L. Bavarro | 38 | Wife | — | New Jersey |
| 18 | Sophia C. Bavarro | 2 | Daughter | — | Massachusetts |
| 19 | Pascal Cantoreggi | 38 | Head | Steward | Massachusetts |
| 20 | Edith D. Cantoreggi | 32 | Wife | — | Massachusetts |
| 21 | Norma L. Cantoreggi | 6 | Daughter | — | Massachusetts |
| 22 | Robert A. Cantoreggi | 4 | Son | — | Massachusetts |
| 23 | Elton V. Glass | 44 | Employee | Dentist | New York |
| 24 | Lillian S. Glass | 40 | Wife | — | Massachusetts |
| 25 | Mabel Abbott | 34 | Employee | — | Massachusetts |
| 26 | Joseph P. Mcduggan | 31 | Employee | Physician | Massachusetts |
| 27 | Olive M. Mcduggan | 31 | Wife | — | Massachusetts |
| 28 | Joseph P. Jr. Mcduggan | 9 | Son | — | Massachusetts |
| 29 | Claire M. Mcduggan | 1 | Daughter | — | Massachusetts |
| 30 | Eva Le Clerc | 42 | Employee | Worker | Massachusetts |
| 31 | Charles L. Browning | 50 | Employee | Supervisor | Maine |
| 32 | Gertie C. Browning | 53 | Wife | — | Maine |
| 33 | Claude A. Rogers | 43 | Employee | Attendant | New Hampshire |
| 34 | Isabel M. Rogers | 40 | Wife | — | New Hampshire |
| 35 | Graham S. Rogers | 20 | Son | — | Massachusetts |
| 36 | James E. Mahoney | 45 | Employee | Supervisor | Massachusetts |
| 37 | Elizabeth W. Mahoney | 44 | Wife | — | Massachusetts |
| 38 | Elizabeth Mahoney | 16 | Daughter | — | Massachusetts |
| 39 | James E. Jr. Mahoney | 14 | Son | — | Massachusetts |
| 40 | John W. Mahoney THIS PERSON | 12 | 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)