JH
John Hennessey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Hennessey across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 8-person household.
Age 42
b. ~1898
Male
Head
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Hennessey |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Janitor |
| Industry | Newspaper |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Occupation | Janitor |
| Township / Ward | Boston City |
| Est. Birth Year | ~1898 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Thomas Hennessey | Son | — | 1 | ~1939 |
| John Hennessey | Head | — | 42 | ~1898 |
| Nellie Hennessey | Spouse | — | 36 | ~1904 |
| Martha Hennessey | Daughter | — | 3 | ~1937 |
| Barbara Hennessey | Daughter | — | 8 | ~1932 |
| Extra Hennessey | Other | — | — | |
| Eileen Hennessey | Daughter | — | 6 | ~1934 |
| John Hennessey | Son | — | 9 | ~1931 |
Census Appearances
1930
Essex, Massachusetts
Head, age 31
Essex, Massachusetts · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessey |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 19 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Manager |
| Industry | Building Allied |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Veteran | No |
| Birthplace (normalized) | irish free state |
1940
Suffolk-County, Massachusetts
Head, age 42
Suffolk-County, Massachusetts · implied b. ~1898 — 8 household members
| Surname | Hennessey |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Occupation | Janitor |
| Industry | Newspaper |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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 Hennessey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Hennessey
Head · 1940 · age 42 · b. ~1898 · 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-t0627-01668-00694)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Francis J Wright | 36 | Head | Painter | Chicago |
| 42 | Teresa Wright | 36 | Wife | — | Irish Free State |
| 43 | Eileen M Wright | 12 | Daughter | — | Massachusetts |
| 44 | Francis J Wright | 5 | Son | — | Massachusetts |
| 45 | Pauline C Wright | 2 | Daughter | — | Massachusetts |
| 46 | Carole Ann Wright | 0 | Daughter | — | Massachusetts |
| 47 | Francis L Chabot | 55 | Stepfather | — | Massachusetts |
| 48 | Dorothy L Chabot | 10 | Stepdaughter | — | Massachusetts |
| 49 | Joseph Stercalza | 26 | Lodger | Pastry Chef | Massachusetts |
| 50 | Alice C Stercalza | 25 | Daughter | — | Massachusetts |
| 51 | Richard J Stercalza | 0 | Grandson | — | Massachusetts |
| 52 | Ludwig Schneider | 36 | Head | Waiter | Germany |
| 53 | Anna Schneider | 37 | Wife | Checker | Germany |
| 54 | Albert J Schneider | 12 | Son | — | Massachusetts |
| 55 | Carl F Schneider | 7 | Son | — | Massachusetts |
| 56 | Francis M Gildea | 34 | Head | Printer | Massachusetts |
| 57 | Anna N Gildea | 34 | Wife | — | Irish Free State |
| 58 | Nan P Gildea | 9 | Daughter | — | Massachusetts |
| 59 | Anita M Gildea | 8 | Daughter | — | Massachusetts |
| 60 | Barbara F Gildea | 7 | Daughter | — | Massachusetts |
| 61 | Margaret M Gildea | 6 | Daughter | — | Massachusetts |
| 62 | Norene Gildea | 5 | Daughter | — | Massachusetts |
| 63 | James M Gildea | 3 | Son | — | Massachusetts |
| 64 | Joan Gildea | 1 | Daughter | — | Massachusetts |
| 65 | John J Nyfragla | 40 | Head | Printer | Massachusetts |
| 66 | Anna B Nyfragla | 36 | Wife | — | Massachusetts |
| 67 | John J Nyfragla | 12 | Son | — | Massachusetts |
| 68 | Beatrice M Nyfragla | 10 | Daughter | — | Massachusetts |
| 69 | Ruth A Nyfragla | 9 | Daughter | — | Massachusetts |
| 70 | Lawrence C Nyfragla | 8 | Son | — | Massachusetts |
| 71 | Gloria P Nyfragla | 5 | Daughter | — | Massachusetts |
| 72 | Paul Nyfragla | 3 | Son | — | Massachusetts |
| 73 | John J Hennessey THIS PERSON | 42 | Head | Janitor | Irish Free State |
| 74 | Nellie Hennessey | 36 | Wife | — | Ireland |
| 75 | John P Hennessey | 9 | Son | — | Massachusetts |
| 76 | Barbara A Hennessey | 8 | Daughter | — | Massachusetts |
| 77 | Eileen M Hennessey | 6 | Daughter | — | Massachusetts |
| 78 | Martha M Hennessey | 3 | Daughter | — | Massachusetts |
| 79 | Thomas J Hennessey | 1 | Son | — | Massachusetts |
| 80 | Extra Line Hennessey | None | — | — | — |
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)