DS
Dennis Sullivan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Dennis Sullivan across the 1900, 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 10-person household.
Age 45
b. ~1875
Male
Head
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Layer-helper |
| Industry | Shipyard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | ireland |
| Occupation | Layer-Helper |
| Township / Ward | Malden City |
| Est. Birth Year | ~1875 |
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.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Dennis | Age | Birth yr |
|---|---|---|---|---|
| Daniel Sullivan | Son | — | 15 | ~1905 |
| Jeremiah Monahan | Other | — | 37 | ~1883 |
| John Hayes | Other | — | 42 | ~1878 |
| Dennis Mcgrath | Other | — | 46 | ~1874 |
| Dennis Sullivan | Head | — | 45 | ~1875 |
| Minnie Sullivan | Spouse | — | 40 | ~1880 |
| Anna Sullivan | Daughter | — | 6 | ~1914 |
| Dennis Dowling | Other | — | 36 | ~1884 |
| John Doyle | Other | — | 27 | ~1893 |
| Patrick Doyle | Other | — | 40 | ~1880 |
Census Appearances
1900
Middlesex, Massachusetts
Other, age 27
Middlesex, Massachusetts · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Cousin |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | Mar |
| Birth Year | 1873 |
| Year of Immigration | 1892 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Middlesex, Massachusetts
Head, age 35
Middlesex, Massachusetts · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 10 |
| Year of Immigration | 1891 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Machinery Shop |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Middlesex, Massachusetts
Head, age 45
Middlesex, Massachusetts · implied b. ~1875 — 10 household members
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Layer-helper |
| Industry | Shipyard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | ireland |
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 Dennis Sullivan across 3 US Census years (1900, 1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Dennis Sullivan
Head · 1920 · age 45 · b. ~1875 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu713unit:0588)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Havelock Barchard | 55 | Head | Stamper | Canada |
| 52 | Adelia Barchard | 51 | Wife | — | Canada |
| 53 | James Barchard | 27 | Son | Cutter | Canada |
| 54 | Harold Barchard | 8 | Grandson | — | Massachusetts |
| 55 | Hazel Barchard | 6 | Grandson | — | Massachusetts |
| 56 | Alfred Parker | 27 | Head | Dyer | Canada |
| 57 | Hazel Parker | 27 | Wife | — | Canada |
| 58 | Alfred Parker | 1 | Son | — | Massachusetts |
| 59 | Howard Parker | 0 | Son | — | Massachusetts |
| 60 | Ernest Marchbank | 33 | Head | Cutter | Maine |
| 61 | Mary Marchbank | 29 | Wife | — | Massachusetts |
| 62 | Nathan Marchbank | 5 | Son | — | Massachusetts |
| 63 | Leonard Monson | 53 | Head | Presser | Nova Scotia |
| 64 | Ellen Monson | 52 | Wife | — | Ireland |
| 65 | Elizabeth Gately | 63 | Head | — | Massachusetts |
| 66 | Ellen Gately | 61 | Sister | — | Massachusetts |
| 67 | Michael Giardullo | 47 | Head | Laborer | Italy |
| 68 | Maria Giardullo | 50 | Wife | — | Italy |
| 69 | Tony Giardullo | 27 | Son | — | Italy |
| 70 | Frank Giardullo | 21 | Son | Carpenter | Italy |
| 71 | Fred Giardullo | 14 | Son | — | Massachusetts |
| 72 | Katie Giardullo | 13 | Daughter | — | Massachusetts |
| 73 | De Vita Hard Giardullo | 43 | Boarder | Laborer | Italy |
| 74 | Dennis Sullivan THIS PERSON | 45 | Head | Layer-Helper | Ireland |
| 75 | Minnie Sullivan | 40 | Wife | — | Ireland |
| 76 | Daniel Sullivan | 15 | Son | — | Massachusetts |
| 77 | Anna Sullivan | 6 | Daughter | — | Massachusetts |
| 78 | John Hayes | 42 | Boarder | Blacksmith | Ireland |
| 79 | Dennis Mcgrath | 46 | Boarder | Laborer | Ireland |
| 80 | Patrick Doyle | 40 | Boarder | Helper | Ireland |
| 81 | John Doyle | 27 | Boarder | Helper | Ireland |
| 82 | Dennis Dowling | 36 | Boarder | Helper | Ireland |
| 83 | Jeremiah Monahan | 37 | Boarder | Helper | Ireland |
| 84 | William Mcgrath | 47 | Head | Draughtsman | Ireland |
| 85 | Hannah Mcgrath | 46 | Wife | — | Ireland |
| 86 | John Mcgrath | 17 | Son | Mach. Asst. | Massachusetts |
| 87 | Raymond Mcgrath | 15 | Son | — | Massachusetts |
| 88 | James Ayer | 30 | Head | Miller | New Hampshire |
| 89 | Lydia Ayer | 33 | Wife | — | Massachusetts |
| 90 | Harold Ayer | 5 | Son | — | Massachusetts |
| 91 | Hazel Ayer | 2 | Daughter | — | Massachusetts |
| 92 | Mary Fowler | 53 | Head | Shoe Shop | Ireland |
| 93 | Helen Kelley | 53 | Head | Saleswoman | Massachusetts |
| 94 | Margaret Kelley | 51 | Sister | Saleswoman | Massachusetts |
| 95 | Catherine Kelley | 17 | Daughter | — | Massachusetts |
| 96 | Henry Kelley | 15 | Son | — | Massachusetts |
| 97 | Albert Ingall | 46 | Head | Conductor | Massachusetts |
| 98 | Ingall | 45 | Wife | — | Massachusetts |
| 99 | Ingall | 17 | Son | — | Massachusetts |
| 100 | Ingall | 15 | Son | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)