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.~1882), then head of a 7-person household.
Age 38
b. ~1882
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 | 38 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Gas Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | 1915 |
| Birth Country | Ireland |
| Year of Naturalization | 1905 |
| Birthplace (normalized) | ireland |
| Occupation | Laborer |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1882 |
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 1920 census.
| Name | Relation to head | Relative to Dennis | Age | Birth yr |
|---|---|---|---|---|
| Mary Sullivan | Daughter | — | 12 | ~1908 |
| Cornelius Sullivan | Son | — | 2 | ~1918 |
| Dennis Sullivan | Head | — | 38 | ~1882 |
| Abigail Sullivan | Spouse | — | 38 | ~1882 |
| William Sullivan | Son | — | 6 | ~1914 |
| Elizabeth Sullivan | Daughter | — | 8 | ~1912 |
| John Sullivan | Son | — | 10 | ~1910 |
Census Appearances
1900
Middlesex, Massachusetts
Other, age 22
Middlesex, Massachusetts · implied b. ~1878 — 19 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | May |
| Birth Year | 1878 |
| Year of Immigration | 1897 |
| 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 29
Middlesex, Massachusetts · implied b. ~1881 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 3 |
| Year of Immigration | 1900 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Gas light Co. |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Middlesex, Massachusetts
Head, age 38
Middlesex, Massachusetts · implied b. ~1882 — 7 household members
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Gas Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | 1915 |
| Birth Country | Ireland |
| Year of Naturalization | 1905 |
| 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 38 · b. ~1882 · 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:1920:14thcensusofpopu708unit:0319)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margery Robertson | 8 | Daughter | — | New York |
| 52 | William Phair | 27 | Head | Printer | Massachusetts |
| 53 | Mary Phair | 28 | Wife | — | Massachusetts |
| 54 | Helen Phair | 3 | Daughter | — | Massachusetts |
| 55 | Gertrude Phair | 1 | Daughter | — | Massachusetts |
| 56 | Evelyn Phair | 0 | Daughter | — | Massachusetts |
| 57 | Mary Kline | 58 | Mother-in-law | — | Massachusetts |
| 58 | Albert J. Kline | 23 | Brother-in-law | Salesman | Massachusetts |
| 59 | Dennis Sullivan THIS PERSON | 38 | Head | Laborer | Ireland |
| 60 | Abigail Sullivan | 38 | Wife | — | Ireland |
| 61 | Mary Sullivan | 12 | Daughter | — | Massachusetts |
| 62 | John Sullivan | 10 | Son | — | Massachusetts |
| 63 | Elizabeth Sullivan | 8 | Daughter | — | Massachusetts |
| 64 | William Sullivan | 6 | Son | — | Massachusetts |
| 65 | Cornelius Sullivan | 2 | Son | — | Massachusetts |
| 66 | Charles E. Kelley | 37 | Head | Machinist | Ohio |
| 67 | Roseann Kelley | 28 | Wife | — | Scotland |
| 68 | Hugh Kelley | 7 | Son | — | Massachusetts |
| 69 | Margaret Kelley | 4 | Daughter | — | Massachusetts |
| 70 | Richard Kelley | 2 | Son | — | Massachusetts |
| 71 | Edward Poutcher | 38 | Head | Rubber Worker | New Jersey |
| 72 | Claranda Poutcher | 34 | Wife | — | Massachusetts |
| 73 | John E. Poutcher | 15 | Son | Press Feeder | Massachusetts |
| 74 | Robert P. Poutcher | 13 | Son | — | Massachusetts |
| 75 | Madeline Poutcher | 11 | Daughter | — | Massachusetts |
| 76 | Dorothy L. Poutcher | 8 | Daughter | — | Massachusetts |
| 77 | Evelyn E. Poutcher | 6 | Daughter | — | Massachusetts |
| 78 | Emily M. Poutcher | 3 | Daughter | — | Massachusetts |
| 79 | Nicholas Lucas | 59 | Head | Wire Worker | Greece |
| 80 | Anna Lucas | 48 | Wife | — | Greece |
| 81 | Apostolos Lucas | 21 | Son | Piano Maker | Greece |
| 82 | Olame Lucas | 11 | Daughter | — | Greece |
| 83 | Lucy Lucas | 4 | Daughter | — | Massachusetts |
| 84 | Irene Lucas | 1 | Daughter | — | Massachusetts |
| 85 | Arthur Hancock | 32 | Head | Machinist | England |
| 86 | Louise Hancock | 28 | Wife | — | Barbados W.I. |
| 87 | Edmund Hancock | 5 | Son | — | Massachusetts |
| 88 | Lillian Hancock | 7 | Daughter | — | Massachusetts |
| 89 | John Donnelly | 40 | Head | Broker | Ireland |
| 90 | Catherine Donnelly | 35 | Wife | — | Ireland |
| 91 | William Donnelly | 11 | Son | — | Massachusetts |
| 92 | Catherine Donnelly | 9 | Daughter | — | Massachusetts |
| 93 | Margaret Donnelly | 6 | Daughter | — | Massachusetts |
| 94 | Michael Driscoll | 45 | Brother-in-law | — | Ireland |
| 95 | Michael Jr. Driscoll | 42 | Brother-in-law | Metal Worker | Ireland |
| 96 | Francis Gallagher | 47 | Head | Laborer | Ireland |
| 97 | Catherine Gallagher | 38 | Wife | — | Ireland |
| 98 | James Gallagher | 11 | Son | — | Massachusetts |
| 99 | Rose Gallagher | 10 | Daughter | — | Massachusetts |
| 100 | Catherine Gallagher | 7 | Daughter | — | 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)