ES
Eugene Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Eugene Sullivan across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Eugene & Margaret — first a son (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Porter |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | Hs 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Porter |
| Township / Ward | Boston |
| 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 Eugene | Age | Birth yr |
|---|---|---|---|---|
| Margaret Sullivan | Spouse | — | 56 | ~1884 |
| Eugene Sullivan | Head | — | 69 | ~1871 |
| Eugene Sullivan | Son | — | 30 | ~1910 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 9
Suffolk, Massachusetts · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Eugene |
| Relationship to Head | Grandnephew |
| Sex | M |
| 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
Suffolk, Massachusetts
Son, age 19
Suffolk, Massachusetts · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 30
Suffolk-County, Massachusetts · implied b. ~1910 — 3 household members
| Surname | Sullivan |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Porter |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | Hs 8 |
| 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 Eugene Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Eugene Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and mother Florence Sullivan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Eugene Sullivan
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Florence Sullivan
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Eugene Sullivan
Son · 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 — 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-t0627-01668-00267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Frisone | 21 | Lodger | Waitress | Massachusetts |
| 42 | Havilah Curse | 68 | Head | — | Texas |
| 43 | Krikorian | 41 | Head | — | Massachusetts |
| 44 | Edward Dilleworsier | 38 | Head | Painter | Massachusetts |
| 45 | Mabel Dilleworsier | 35 | Sister | — | Massachusetts |
| 46 | Adolpho G. Merolla | 49 | Head | Musician | Italy |
| 47 | Eugene Sullivan | 69 | Head | Stationary Fireman | Connecticut |
| 48 | Margaret Sullivan | 56 | Wife | — | Massachusetts |
| 49 | Eugene Sullivan THIS PERSON | 30 | Son | Porter | Massachusetts |
| 50 | Julia Fay | 69 | Head | — | Massachusetts |
| 51 | Catherine West | 59 | Head | Laboratory Assistant | Massachusetts |
| 52 | Regina Kohler | 62 | Friend | Matron | Massachusetts |
| 53 | George Carroll | 57 | Head | Carpenter | Canada-English |
| 54 | Helen Carroll | 53 | Wife | — | Massachusetts |
| 55 | Mary Carroll | 19 | Daughter | Waitress | Massachusetts |
| 56 | John Carroll | 17 | Son | Tree Worker | Massachusetts |
| 57 | Helen Carroll | 16 | Daughter | — | Massachusetts |
| 58 | Margaret Carroll | 13 | Daughter | — | Massachusetts |
| 59 | Annie Carroll | 12 | Daughter | — | Massachusetts |
| 60 | George Carroll | 10 | Son | — | Massachusetts |
| 61 | Leo Carroll | 9 | Son | — | Massachusetts |
| 62 | Thomas Walsh | 78 | Head | Porter | Irish Free State |
| 63 | Mary Walsh | 75 | Wife | — | Irish Free State |
| 64 | Catherine Mccarthy | 39 | Daughter | — | Massachusetts |
| 65 | Constance Mccarthy | 9 | Granddaughter | — | Massachusetts |
| 66 | James Kantelis | 48 | Head | Salesman | Greece |
| 67 | Dina Kantelis | 40 | Wife | — | Greece |
| 68 | George Kantelis | 20 | Son | Assistant Wood-Work Teacher | Massachusetts |
| 69 | John Kantelis | 17 | Son | — | Massachusetts |
| 70 | Mary Flora | 52 | Head | — | Massachusetts |
| 71 | Anna Flora | 26 | Daughter | Typist | Massachusetts |
| 72 | Grace Flora | 25 | Daughter | Cutter | Massachusetts |
| 73 | Angus Flora | 21 | Son | Stock Clerk | Massachusetts |
| 74 | Doris Flora | 18 | Daughter | — | Massachusetts |
| 75 | Mary Brandio | 53 | Head | — | Massachusetts |
| 76 | Peter Brandio | 24 | Son | Record Clerk | Massachusetts |
| 77 | John Brandio | 22 | Son | Laborer | Massachusetts |
| 78 | Paul Brandio | 20 | Son | Artist | Massachusetts |
| 79 | William Brandio | 18 | Son | — | Massachusetts |
| 80 | Vincent Brandio | 16 | Son | — | Massachusetts |
Pedigree Summary
Eugene
Gen 1 · 3 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)