JH
John Hennessey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Hennessey across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 7-person household.
Age 51
b. ~1879
Male
Head
Born: Irish Free State
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Hennessey |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1898 |
| Age at First Marriage | 27 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Fireman |
| Industry | Club Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Birthplace (normalized) | irish free state |
| Occupation | Fireman |
| Township / Ward | Boston City |
| Est. Birth Year | ~1879 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Hennessey | Son | — | 16 | ~1914 |
| John Hennessey | Son | — | 21 | ~1909 |
| John Hennessey | Head | — | 51 | ~1879 |
| Helen Hennessey | Daughter | — | 20 | ~1910 |
| Margaret Hennessey | Spouse | — | 50 | ~1880 |
| Rita Hennessey | Daughter | — | 14 | ~1916 |
| Helen Hennessey | Daughter | — | 23 | ~1907 |
Census Appearances
1930
Suffolk, Massachusetts
Head, age 51
Suffolk, Massachusetts · implied b. ~1879 — 7 household members
| Surname | Hennessey |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1898 |
| Age at First Marriage | 27 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Fireman |
| Industry | Club Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Birthplace (normalized) | irish free state |
1940
Suffolk-County, Massachusetts
Head, age 65
Suffolk-County, Massachusetts · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessy |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | SUFFOLK |
| Naturalization Status | Naturalized |
| Occupation | Foreman |
| Industry | Auto Club |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 960 |
| Highest Grade | No 8 |
| 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 · 1930 · age 51 · b. ~1879 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel949:0284)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Evelyn Mcniff | 9 | Daughter | — | Massachusetts |
| 2 | Peter J Mcniff | 6 | Son | — | Massachusetts |
| 3 | Edward O'Donnell | 51 | Head | Salesman | Massachusetts |
| 4 | Mary J O'Donnell | 54 | Wife | — | Massachusetts |
| 5 | Mary J O'Donnell | 17 | Daughter | Student Nurse | Massachusetts |
| 6 | Michael Doyle | 42 | Head | Chauffeur | Irish Free State |
| 7 | Annie Doyle | 41 | Wife | — | Irish Free State |
| 8 | Mary Doyle | 20 | Daughter | — | Massachusetts |
| 9 | Richard Doyle | 19 | Son | Manager | Massachusetts |
| 10 | Annie Doyle | 10 | Daughter | — | Massachusetts |
| 11 | John Doyle | 1 | Son | — | Massachusetts |
| 12 | Daniel Pitts | 32 | Head | Carpenter | Massachusetts |
| 13 | Marie Pitts | 31 | Wife | — | Massachusetts |
| 14 | Edith Pitts | 11 | Daughter | — | Massachusetts |
| 15 | Noel Pitts | 9 | Son | — | Massachusetts |
| 16 | James J Macdougall | 35 | Head | Laundryman | Massachusetts |
| 17 | Helen T Macdougall | 38 | Wife | — | Massachusetts |
| 18 | Robert J Macdougall | 8 | Son | — | Massachusetts |
| 19 | Francis Macdougall | 7 | Son | — | Massachusetts |
| 20 | Helen Macdougall | 6 | Daughter | — | Massachusetts |
| 21 | James J Jr Macdougall | 4 | Son | — | Massachusetts |
| 22 | Loretta Macdougall | 1 | Daughter | — | Massachusetts |
| 23 | John Smyth | 48 | Head | Painter | Northern Ireland |
| 24 | Bridget Smyth | 54 | Wife | — | Irish Free State |
| 25 | John Smyth | 17 | Son | — | Massachusetts |
| 26 | John J Harney | 54 | Head | Steamfitter | Irish Free State |
| 27 | Mary E Harney | 48 | Wife | — | Irish Free State |
| 28 | Julia Manning | 56 | Head | Cook | Irish Free State |
| 29 | Mary E Redden | 53 | Head | — | Massachusetts |
| 30 | George J Doherty | 50 | Head | Chef | Irish Free State |
| 31 | Delia Doherty | 50 | Wife | — | Irish Free State |
| 32 | Josephine Doherty | 23 | Daughter | Bookkeeper | Massachusetts |
| 33 | Beatrice Doherty | 20 | Daughter | Bookkeeper | Massachusetts |
| 34 | William O'Brien | 40 | Head | Chauffeur | Irish Free State |
| 35 | Nora O'Brien | 42 | Wife | — | Irish Free State |
| 36 | Thomas Jenifer | 54 | Head | Clerk | Irish Free State |
| 37 | Catherine Jenifer | 45 | Wife | — | Irish Free State |
| 38 | Edward Guess | 22 | Boarder | — | Irish Free State |
| 39 | Edward G Harlow | 50 | Head | Steward | England |
| 40 | Catherine Harlow | 48 | Wife | — | Irish Free State |
| 41 | Richard Harlow | 19 | Son | — | Massachusetts |
| 42 | Pauline Harlow | 10 | Daughter | Student Nurse | Massachusetts |
| 43 | John A Hennessey THIS PERSON | 51 | Head | Fireman | Irish Free State |
| 44 | Margaret Hennessey | 50 | Wife | — | Irish Free State |
| 45 | Helen Hennessey | 23 | Daughter | Bookkeeper | Massachusetts |
| 46 | John Hennessey | 21 | Son | Clerk | Massachusetts |
| 47 | Helen Hennessey | 20 | Daughter | Stenographer | Massachusetts |
| 48 | John J Hennessey | 16 | Son | — | Massachusetts |
| 49 | Rita Hennessey | 14 | Daughter | — | Massachusetts |
| 50 | Margaret Donahue | 69 | Head | — | Irish Free State |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)