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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.~1915), then head of a 9-person household.
Age 25
b. ~1915
Female
Daughter
Born: Mass
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Dorothy J |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Mass |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Book keeper |
| Industry | School Teacher |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
| Occupation | Book Keeper |
| Township / Ward | Boston City |
| Est. Birth Year | ~1915 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Ethel Sullivan | Daughter | — | 23 | ~1917 |
| Anna Sullivan | Spouse | — | 50 | ~1890 |
| William Sullivan | Son | — | 27 | ~1913 |
| Ruth Sullivan | Daughter | — | 21 | ~1919 |
| Dorothy Sullivan | Daughter | — | 25 | ~1915 |
| Daniel Sullivan | Son | — | 14 | ~1926 |
| Marjorie Sullivan | Daughter | — | 16 | ~1924 |
| Daniel Sullivan | Head | — | 50 | ~1890 |
| Ann Sullivan | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 16
Suffolk, Massachusetts · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dorothy H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Mass |
| Father's Birthplace | Mass |
| Mother's Birthplace | Mass |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1940
Suffolk-County, Massachusetts
Daughter, age 25
Suffolk-County, Massachusetts · implied b. ~1915 — 9 household members
| Surname | Sullivan |
| Given Name | Dorothy J |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Mass |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Book keeper |
| Industry | School Teacher |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
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 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Ethel Sullivan
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Sullivan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Sullivan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Sullivan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Sullivan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Sullivan
Sibling · 1940 · age 27
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
37 people indexed on this census page (nara:1940:m-t0627-01682-00777)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Josephine Brack | 56 | Head | — | N. Ireland |
| 2 | Agnes Walker | 34 | daughter | — | Mass |
| 3 | Robert Walker | 34 | husband | Proprietor | Mass |
| 4 | Robert Jr Walker | 10 | son | — | Mass |
| 5 | Daniel D Sullivan | 50 | Head | Contractor | Mass |
| 6 | Anna Sullivan | 50 | Wife | — | Mass |
| 7 | William A Sullivan | 27 | son | Operator | Mass |
| 8 | Dorothy J Sullivan THIS PERSON | 25 | daughter | Book Keeper | Mass |
| 9 | Ethel A Sullivan | 23 | daughter | Book Keeper | Mass |
| 10 | Ruth E Sullivan | 21 | daughter | Bookkeeping | Mass |
| 11 | Ann J Sullivan | 19 | daughter | — | Mass |
| 12 | Marjorie Sullivan | 16 | daughter | — | Mass |
| 13 | Daniel F Sullivan | 14 | son | — | Mass |
| 14 | Anna D Sullivan | 30 | Head | Same Place | Mass |
| 15 | John H Sullivan | 45 | son | — | Mass |
| 16 | Frances Sullivan | 44 | Wife | — | Mass |
| 17 | John H Jr Sullivan | 18 | son | — | Mass |
| 18 | Mary Lou Sullivan | 14 | daughter | — | Mass |
| 19 | Ann D Sullivan | 65 | Head | — | New Hampshire |
| 20 | John Sullivan | 67 | Husband | Broker | Canada Eng |
| 21 | Monica Sullivan | 30 | daughter | 25 | Mass |
| 22 | Margaret Sullivan | 29 | daughter | 25 | Mass |
| 23 | Thomas Sullivan | 25 | son | — | Mass |
| 24 | Alfred Santosuosso | 37 | Head | Attorney | Mass |
| 25 | Helen D Santosuosso | 36 | Wife | — | Connecticut |
| 26 | Thelma Santosuosso | 12 | daughter | — | Mass |
| 27 | Norma Santosuosso | 9 | daughter | — | Mass |
| 28 | Francis H Mahoney | 57 | Head | Dress Maker | Mass |
| 29 | Louise Robinson | 46 | sister | Saleslady | Mass |
| 30 | Margaret Robinson | 63 | sister | — | Mass |
| 31 | John Robinson | 42 | son | Electrician | Mass |
| 32 | Ralph S Goodwin | 45 | Head | Salesman | Mass |
| 33 | Josephine Goodwin | 39 | Wife | — | N Ireland |
| 34 | Josephine Goodwin | 22 | daughter | Stenographer | Mass |
| 35 | Marjorie Goodwin | 20 | daughter | — | Mass |
| 36 | Rita Goodwin | 14 | daughter | New Worker | Mass |
| 37 | Ralph Goodwin | 13 | son | — | Mass |
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)