DS
Dorothy Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Dorothy Sullivan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1930 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| John Sullivan | Son | — | 20 | ~1920 |
| Edward Sullivan | Son | — | 6 | ~1934 |
| Dorothy Sullivan | Daughter | — | 10 | ~1930 |
| John Sullivan | Head | — | 48 | ~1892 |
| James Sullivan | Son | — | 18 | ~1922 |
| George Sullivan | Son | — | 16 | ~1924 |
| Marianne Sullivan | Spouse | — | 44 | ~1896 |
| Joseph Sullivan | Son | — | 12 | ~1928 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age
Suffolk, Massachusetts · implied b. ~1930 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 10
Suffolk-County, Massachusetts · implied b. ~1930 — 8 household members
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Dorothy Sullivan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Dorothy Sullivan
Daughter · 1940 · age 10 · b. ~1930 · Massachusetts
★ You are viewing this record
Sibling
John Sullivan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Sullivan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Sullivan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Sullivan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sullivan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-01682-00224)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Percy Little | 53 | Head | Meat Cutter | Massachusetts |
| 42 | Mary A. Little | 51 | Wife | — | Irish Free State |
| 43 | Agnes Little | 31 | Daughter | Laundress | Massachusetts |
| 44 | Charles R. Little | 26 | Son | Blue Print Machine | Massachusetts |
| 45 | Irene Little | 21 | Daughter | Packer | Massachusetts |
| 46 | Helen Little | 19 | Daughter | Salesgirl | Massachusetts |
| 47 | John P. Sullivan | 48 | Head | Watchman | Massachusetts |
| 48 | Marianne Sullivan | 44 | Wife | — | Massachusetts |
| 49 | John P. Sullivan | 20 | Son | Stenographer | Massachusetts |
| 50 | James Sullivan | 18 | Son | — | Massachusetts |
| 51 | George Sullivan | 16 | Son | — | Massachusetts |
| 52 | Joseph Sullivan | 12 | Son | — | Massachusetts |
| 53 | Dorothy Sullivan THIS PERSON | 10 | Daughter | — | Massachusetts |
| 54 | Edward Sullivan | 6 | Son | — | Massachusetts |
| 55 | Charles Baron | 52 | Head | Contractor | Lithuania |
| 56 | Annie Baron | 48 | Wife | — | Russia |
| 57 | Arthur Baron | 25 | Son | Paper Hanger | Massachusetts |
| 58 | Samuel Baron | 22 | Son | Paper Hanger | Massachusetts |
| 59 | Beatrice Baron | 13 | Daughter | — | Massachusetts |
| 60 | Norman Baron | 4 | Son | — | Massachusetts |
| 61 | Omar Taylor | 45 | Head | Mechanic | Massachusetts |
| 62 | Laura York | 48 | Sister | — | Massachusetts |
| 63 | Extra Line | None | — | — | — |
| 64 | Extra Line | None | — | — | — |
| 65 | Extra Line | None | — | — | — |
| 66 | John Feeney | 47 | Head | Salesman | Maine |
| 67 | Mary Feeney | 43 | Wife | Counter Girl | Nova Scotia |
| 68 | Dorothy Feeney | 21 | Daughter | Stenographer | Massachusetts |
| 69 | Eleanor Feeney | 19 | Daughter | — | Maine |
| 70 | Walter Feeney | 17 | Son | — | Maine |
| 71 | Paul Feeney | 13 | Son | — | Maine |
| 72 | Michael J. Murphy | 73 | Head | — | Newfoundland |
| 73 | Jane Murphy | 65 | Wife | — | Newfoundland |
| 74 | John J. Murphy | 37 | Son | Drug Clerk | Massachusetts |
| 75 | Annie Rosenfield | 45 | Head | Store Manager | Russia |
| 76 | Gilbert Rosenfield | 23 | Son | House Painter | Massachusetts |
| 77 | Maurice Rosenfield | 22 | Son | Counter Man | Massachusetts |
| 78 | Sylvia Rosenfield | 19 | Daughter | New Worker | Massachusetts |
| 79 | William H. Waddell | 33 | Head | Assistant Manager | Maine |
| 80 | Rita Waddell | 36 | Wife | — | Maine |
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)