AS
Arthur Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Arthur Sullivan across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Arthur & Jas — first a son (b.~1918), then head of a 8-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Arthur Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Auto mechanic |
| Industry | Public garage |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 290 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Auto Mechanic |
| Township / Ward | Boston |
| Est. Birth Year | ~1918 |
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 Arthur | Age | Birth yr |
|---|---|---|---|---|
| Arthur Sullivan | Son | — | 22 | ~1918 |
| Arthur Sullivan | Head | — | 51 | ~1889 |
| Francis Sullivan | Son | — | 16 | ~1924 |
| Mary Sullivan | Other | — | 85 | ~1855 |
| Vincent Sullivan | Son | — | 19 | ~1921 |
| Robert Sullivan | Son | — | 14 | ~1926 |
| Paul Sullivan | Son | — | 12 | ~1928 |
| Margaret Sullivan | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Arthur Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 8 household members
| Surname | Sullivan |
| Given Name | Arthur Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Auto mechanic |
| Industry | Public garage |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 290 |
| Highest Grade | H-2 |
| 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 Arthur Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Sullivan (~0.92 confidence) and father Jas Sullivan (~0.92 confidence) and mother Anna Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Sullivan
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Jas Sullivan
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Anna Sullivan
b. ~1902
Source mother
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Mary Sullivan
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Sullivan
Son · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Francis Sullivan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Sullivan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Sullivan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Sullivan
Sibling · 1940 · age 14
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-t0627-01664-00028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sweeney, Mary Cook | 4 | Daughter | — | Massachusetts |
| 2 | Barbara King | 65 | Head | Cleaner | Eire |
| 3 | William O'Shea | 40 | Head | Chauffeur | Massachusetts |
| 4 | Katherine O'Shea | 38 | Wife | — | Massachusetts |
| 5 | Loretta O'Shea | 9 | Daughter | — | Massachusetts |
| 6 | William Jr. O'Shea | 6 | Son | — | Massachusetts |
| 7 | John D. Goulart | 74 | Head | — | Massachusetts |
| 8 | Anna Connors | 40 | Head | Seamstress | Massachusetts |
| 9 | Margaret Garbar | 60 | Head | Seamstress | Massachusetts |
| 10 | Mary G. Coughlin | 49 | Head | — | Massachusetts |
| 11 | Daniel Coughlin | 46 | Brother | Post Office Clerk | Massachusetts |
| 12 | Harry Swanson | 29 | Head | Meat-Cutter | Massachusetts |
| 13 | Anna Swanson | 27 | Wife | — | Massachusetts |
| 14 | Claire C. Swanson | 7 | Daughter | — | Massachusetts |
| 15 | Richard E. Swanson | 1 | Son | — | Massachusetts |
| 16 | Catherine Crowley | 72 | Mother-in-law | — | Massachusetts |
| 17 | John Fitzgerald | 65 | Head | — | Canada-English |
| 18 | Mary Fitzgerald | 65 | Wife | — | Canada-English |
| 19 | Henry Fitzgerald | 35 | Son | Custodian | Massachusetts |
| 20 | Patrick Walsh | 35 | Head | Laborer | Eire |
| 21 | Margaret Walsh | 32 | Wife | — | Eire |
| 22 | Theresa Walsh | 10 | Daughter | — | Massachusetts |
| 23 | Patricia Walsh | 9 | Daughter | — | Massachusetts |
| 24 | Joseph Walsh | 8 | Son | — | Massachusetts |
| 25 | Claire Walsh | 5 | Daughter | — | Massachusetts |
| 26 | Mary Walsh | 3 | Daughter | — | Massachusetts |
| 27 | Christina Walsh | 1 | Daughter | — | Massachusetts |
| 28 | Arthur Sullivan | 51 | Head | Sexton | Massachusetts |
| 29 | Margaret Sullivan | 54 | Wife | — | Massachusetts |
| 30 | Arthur Jr. Sullivan THIS PERSON | 22 | Son | Auto Mechanic | Massachusetts |
| 31 | Vincent Sullivan | 19 | Son | Laborer | Massachusetts |
| 32 | Francis Sullivan | 16 | Son | — | Massachusetts |
| 33 | Robert Sullivan | 14 | Son | — | Massachusetts |
| 34 | Paul Sullivan | 12 | Son | — | Massachusetts |
| 35 | Mary Sullivan | 85 | Aunt | — | Canada-English |
| 36 | James Calhoun | 47 | Head | Chauffeur | Massachusetts |
| 37 | Alvina Calhoun | 45 | Wife | — | New York |
| 38 | James Jr. Calhoun | 17 | Son | Wood-Cutter | Massachusetts |
| 39 | Mary Calhoun | 14 | Daughter | — | Massachusetts |
| 40 | John C. Calhoun | 13 | Son | — | Massachusetts |
Pedigree Summary
Arthur + 4 siblings
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)