JD
John Dennis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Dennis across the 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 7-person household.
Age 42
b. ~1888
Male
Head
Born: Portugal
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Dennis |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Portugal |
| Naturalization Status | First papers filed |
| Year of Immigration | 1907 |
| Age at First Marriage | 24 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Additional Details | |
| Occupation | Fish Dealer |
| Industry | Independent |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Home Owned/Rented | O |
| Home Value / Rent | 3,000 |
| Veteran | No |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Occupation | Fish Dealer |
| Township / Ward | Boston City |
| Est. Birth Year | ~1888 |
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 Dennis | Head | — | 42 | ~1888 |
| Mary Dennis | Spouse | — | 36 | ~1894 |
| John Dennis | Son | — | 16 | ~1914 |
| William Dennis | Son | — | 10 | ~1920 |
| Mary Dennis | Daughter | — | 12 | ~1918 |
| Jeanette Dennis | Daughter | — | 3 | ~1927 |
| James Dennis | Son | — | 5 | ~1925 |
Census Appearances
1920
Suffolk, Massachusetts
Head, age 32
Suffolk, Massachusetts · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dennis |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Portugal |
| Year of Immigration | 1903 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Laborer |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Home Owned/Rented | R |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1930
Suffolk, Massachusetts
Head, age 42
Suffolk, Massachusetts · implied b. ~1888 — 7 household members
| Surname | Dennis |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Portugal |
| Naturalization Status | First papers filed |
| Year of Immigration | 1907 |
| Age at First Marriage | 24 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Fish Dealer |
| Industry | Independent |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Home Owned/Rented | O |
| Home Value / Rent | 3,000 |
| Veteran | No |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
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 Dennis across 2 US Census years (1920 and 1930) in Suffolk, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
John Dennis
Head · 1930 · age 42 · b. ~1888 · 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:massachusettscensus00reel947:0172)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John G. Rooney | 22 | Son | Reporter | Massachusetts |
| 52 | James J. Moroney | 58 | Head | Fireman | Irish Free State |
| 53 | Ella P. Moroney | 50 | Wife | None | Germany |
| 54 | Thomas M. Moroney | 25 | Son | Manager | Massachusetts |
| 55 | John E. Moroney | 23 | Son | Bricklayer | Massachusetts |
| 56 | Thomas P. Fitzgerald | 21 | Nephew | Construction | Massachusetts |
| 57 | Anna C. Keefe | 24 | Step-daughter | Book Keeper | Massachusetts |
| 58 | Edward J. Keefe | 22 | Step-son | Truckman | Massachusetts |
| 59 | Helen P. Keefe | 20 | Step-daughter | Book Keeper | Massachusetts |
| 60 | Daniel J. Keefe | 18 | Step-son | None | Massachusetts |
| 61 | Lula E. Allen | 61 | Head | None | Canada-French |
| 62 | Lester S. Allen | 42 | Son | Estimator | Massachusetts |
| 63 | Leola M. Driscoll | 40 | Daughter | Ticket Booth | New Hampshire |
| 64 | Michael Wallace | 59 | Head | Laborer | Irish Free State |
| 65 | Ellen Wallace | 59 | Wife | None | Irish Free State |
| 66 | Mary E. Wallace | 36 | Daughter | Folder | Massachusetts |
| 67 | Robert E. Wallace | 28 | Son | Steward | Massachusetts |
| 68 | Helen B. Wallace | 25 | Daughter | Piano Teacher | Massachusetts |
| 69 | Patrick C. Wallace | 21 | Son | Sail Maker | Massachusetts |
| 70 | Margaret T. Mccarthy | 24 | Boarder | Folder | Massachusetts |
| 71 | Gertrude Maloney | 45 | Boarder | Saleslady | Massachusetts |
| 72 | Lawrence J. Conley | 43 | Head | Boxing Instructor | Massachusetts |
| 73 | Helen S. Conley | 40 | Wife | None | Massachusetts |
| 74 | William G. Conley | 17 | Son | None | Massachusetts |
| 75 | Robert A. Conley | 14 | Son | None | Massachusetts |
| 76 | Paul W. Conley | 12 | Son | None | Massachusetts |
| 77 | Lorraine A. Conley | 10 | Daughter | None | Massachusetts |
| 78 | Kenneth L. Conley | 7 | Son | — | Massachusetts |
| 79 | Leonard F. Conley | 5 | Son | — | Massachusetts |
| 80 | Donald F. Conley | 3 | Son | — | Massachusetts |
| 81 | Helen M. Conley | 3 | Daughter | — | Massachusetts |
| 82 | Phyllis T. Conley | 0 | Daughter | — | Massachusetts |
| 83 | John Dennis THIS PERSON | 42 | Head | Fish Dealer | Portugal |
| 84 | Mary R. Dennis | 36 | Wife | None | Portugal |
| 85 | John Dennis | 16 | Son | None | Massachusetts |
| 86 | Mary Dennis | 12 | Daughter | None | Massachusetts |
| 87 | William Dennis | 10 | Son | None | Massachusetts |
| 88 | James Dennis | 5 | Son | — | Massachusetts |
| 89 | Jeanette Dennis | 3 | Daughter | — | Massachusetts |
| 90 | John J. Jr. Kendrigan | 24 | Head | Soda Clerk | Massachusetts |
| 91 | Christina M. Kendrigan | 21 | Wife | None | Pennsylvania |
| 92 | Jacqueline J. Kendrigan | 1 | Daughter | — | Massachusetts |
| 93 | John J. Iii Kendrigan | 0 | Son | — | Massachusetts |
| 94 | William H. Parker | 50 | Head | Stationary Fireman | Massachusetts |
| 95 | Mary J. Parker | 56 | Wife | Colorer | Massachusetts |
| 96 | Lois Parker | 18 | Daughter | None | Massachusetts |
| 97 | Jeremiah Manning | 47 | Head | Motorman | Irish Free State |
| 98 | Joseph Manning | 10 | Son | None | Massachusetts |
| 99 | Mary M. Manning | 8 | Daughter | None | Massachusetts |
| 100 | Michael F. Meacher | 62 | Head | None | Massachusetts |
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)