AS
Alice Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this Alice Sullivan across the 1920, 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Dennis & Bridget — first a daughter (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Alice M. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brockton City |
| 1935 Residence (County) | Plymouth |
| Additional Details | |
| Occupation | teacher |
| Industry | public school |
| Class of Worker | GW |
| Hours Worked | 33 |
| Income (1939) | 900 |
| Highest Grade | C-4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Teacher |
| Township / Ward | Brockton City |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alice | Age | Birth yr |
|---|---|---|---|---|
| Alice Sullivan | Daughter | — | 30 | ~1910 |
| Dennis Sullivan | Head | — | 61 | ~1879 |
| Bridget Sullivan | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Plymouth, Massachusetts
Daughter, age 9
Plymouth, Massachusetts · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Alice M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Plymouth, Massachusetts
Daughter, age 20
Plymouth, Massachusetts · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Alice M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Teacher |
| Industry | Public school |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Daughter, age 30
Plymouth-County, Massachusetts · implied b. ~1910 — 3 household members
| Surname | Sullivan |
| Given Name | Alice M. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brockton City |
| 1935 Residence (County) | Plymouth |
| Occupation | teacher |
| Industry | public school |
| Class of Worker | GW |
| Hours Worked | 33 |
| Income (1939) | 900 |
| Highest Grade | C-4 |
| 1935 Residence | Same house |
| 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 Alice Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Dennis Sullivan (~0.92 confidence) and mother Bridget Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and mother Nina Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Dennis Sullivan
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Bridget Sullivan
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Nina Sullivan
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Alice Sullivan
Daughter · 1940 · age 30 · b. ~1910 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01635-00579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred Leonard | 16 | daughter | 0 | Massachusetts |
| 2 | Anita Leonard | 15 | daughter | 0 | Massachusetts |
| 3 | Phyllis Leonard | 2 | daughter | 0 | Massachusetts |
| 4 | Gardner R. Mandeville | 46 | head | Machinist | Massachusetts |
| 5 | Doris Mandeville | 46 | wife | 0 | Massachusetts |
| 6 | Andrew K. Mandeville | 21 | son | Clerk | Massachusetts |
| 7 | Gordon L. Mandeville | 18 | son | Shipping Clerk | Massachusetts |
| 8 | Herbert Rollins | 35 | head | Inst. Instructor | New Hampshire |
| 9 | Mildred A. Rollins | 30 | wife | 0 | Massachusetts |
| 10 | Stanley Rollins | 4 | son | 0 | Massachusetts |
| 11 | Richard W. Poole | 55 | head | Printer | Massachusetts |
| 12 | Lucy Lovell | 54 | servant | Housekeeper | Massachusetts |
| 13 | — | None | — | — | — |
| 14 | — | None | — | — | — |
| 15 | Dennis J. Sullivan | 61 | head | Salesman | Rhode Island |
| 16 | Bridget Sullivan | 60 | wife | 0 | Irish Free State |
| 17 | Alice M. Sullivan THIS PERSON | 30 | daughter | Teacher | Massachusetts |
| 18 | Nemiah S. Williams | 83 | head | 0 | Canada English |
| 19 | Lillian Williams | 79 | wife | 0 | Massachusetts |
| 20 | Kenneth Reames | 44 | head | Salesman | Massachusetts |
| 21 | Dorothy S. Reames | 33 | wife | Saleslady | Connecticut |
| 22 | — | None | — | — | — |
| 23 | Charles Adams | 55 | head | Teller | Massachusetts |
| 24 | Katherine A. Adams | 50 | wife | 0 | Massachusetts |
| 25 | James A. Mandeville | 67 | head | Printer | Massachusetts |
| 26 | Mary E. Mandeville | 64 | wife | 0 | Canada English |
| 27 | — | None | — | — | — |
| 28 | Frederick Stoward | 36 | head | Salesman | Massachusetts |
| 29 | Isabelle Stoward | 30 | wife | 0 | Massachusetts |
| 30 | Frederick Jr. Stoward | 9 | son | 0 | Massachusetts |
| 31 | Barbara Ann Stoward | 7 | daughter | 0 | Massachusetts |
| 32 | Richard E. Stoward | 4 | son | 0 | Massachusetts |
| 33 | Wesley Stanley | 49 | head | Plumber | Maine |
| 34 | Mabel S. Stanley | 55 | wife | 0 | Massachusetts |
| 35 | Howard Stanley | 26 | son | Clerk | Massachusetts |
| 36 | Dorothy Stanley | 24 | daughter | 0 | Massachusetts |
| 37 | Charles Thomas | 40 | head | Chauffeur | Massachusetts |
| 38 | Mildred Thomas | 34 | wife | 0 | Massachusetts |
| 39 | Melvin Thomas | 9 | son | 0 | Massachusetts |
| 40 | Beverly Thomas | 6 | daughter | 0 | Massachusetts |
Pedigree Summary
Alice
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)