TS
Thomas Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Thomas Sullivan across the 1910, 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 7-person household.
Age 68
b. ~1872
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Thomas D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | SUFFOLK |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Maintenance man |
| Industry | Dept Store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1300 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Maintenance Man |
| Township / Ward | Boston City |
| Est. Birth Year | ~1872 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Catherine Sullivan | Daughter | — | 29 | ~1911 |
| Agnes Sullivan | Daughter | — | 32 | ~1908 |
| Rita Sullivan | Daughter | — | 26 | ~1914 |
| Thomas Sullivan | Head | — | 68 | ~1872 |
| Jeremiah Sullivan | Son | — | 21 | ~1919 |
| Thomas Sullivan | Son | — | 23 | ~1917 |
| Annie Sullivan | Spouse | — | 57 | ~1883 |
Census Appearances
1910
Suffolk, Massachusetts
Head, age 40
Suffolk, Massachusetts · implied b. ~1870 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 20 |
| Year of Immigration | 1908 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Coal Yard |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Suffolk, Massachusetts
Head, age 50
Suffolk, Massachusetts · implied b. ~1870
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Blacksmith |
| Class of Worker | W |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1888 |
| Birthplace (normalized) | ireland |
1930
Suffolk, Massachusetts
Head, age 60
Suffolk, Massachusetts · implied b. ~1870 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Special Officer |
| Industry | Public Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Suffolk-County, Massachusetts
Head, age 68
Suffolk-County, Massachusetts · implied b. ~1872 — 7 household members
| Surname | Sullivan |
| Given Name | Thomas D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | SUFFOLK |
| Naturalization Status | Naturalized |
| Occupation | Maintenance man |
| Industry | Dept Store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1300 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Thomas Sullivan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Sullivan
Head · 1940 · age 68 · b. ~1872 · Massachusetts
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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-t0627-01668-00505)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nicholas J. Mulcahy | 57 | Head | Attendant | Massachusetts |
| 42 | Winifred M. Mulcahy | 49 | Wife | Telephone Operator | Massachusetts |
| 43 | Mary V. Mulcahy | 13 | Daughter | — | Massachusetts |
| 44 | Winifred M. Mulcahy | 11 | Daughter | — | Massachusetts |
| 45 | Paul Mulcahy | 9 | Son | — | Massachusetts |
| 46 | James H. Fitzgerald | 74 | Head | — | Massachusetts |
| 47 | Mary L. Fitzgerald | 72 | Wife | — | Massachusetts |
| 48 | Ellen O'Brien | 60 | Head | — | Massachusetts |
| 49 | Timothy G. Bulman | 52 | Head | Sewing Machine | Irish Free State |
| 50 | Mary B. Bulman | 39 | Wife | Stationary Engineer | Ireland |
| 51 | Mary A. Bulman | 16 | Daughter | — | Massachusetts |
| 52 | Frances L. Bulman | 15 | Daughter | — | Massachusetts |
| 53 | Thomas J. Bulman | 13 | Son | — | Massachusetts |
| 54 | Russell G. Bulman | 11 | Son | — | Massachusetts |
| 55 | Eleanor C. Bulman | 8 | Daughter | — | Massachusetts |
| 56 | Alfred F. Bulman | 7 | Son | — | Massachusetts |
| 57 | Elizabeth A. Bulman | 5 | Daughter | — | Massachusetts |
| 58 | Claire V. Bulman | 3 | Daughter | — | Massachusetts |
| 59 | Paul P. Bulman | 1 | Son | — | Massachusetts |
| 60 | Sarah H. Donnelly | 53 | Head | — | Ireland |
| 61 | Mary M. Donnelly | 29 | Daughter | Secretary | Massachusetts |
| 62 | Alice R. Donnelly | 25 | Daughter | Stenographer | Massachusetts |
| 63 | Edward B. Donnelly | 21 | Son | Store Clerk | Massachusetts |
| 64 | James J. Donnelly | 19 | Son | Store Clerk | Massachusetts |
| 65 | Bernard R. Donnelly | 13 | Son | — | Massachusetts |
| 66 | Thomas F. Donnelly | 13 | Son | — | Massachusetts |
| 67 | Theresa H. Donnelly | 13 | Daughter | — | Massachusetts |
| 68 | Francis C. White | 39 | Head | Street Inspector | Massachusetts |
| 69 | Kathleen G. White | 44 | Wife | — | Massachusetts |
| 70 | Kathleen White | 13 | Daughter | — | Massachusetts |
| 71 | Marie H. White | 11 | Daughter | — | Massachusetts |
| 72 | Dorothy White | 9 | Daughter | — | Massachusetts |
| 73 | Patrick H. Rogan | 47 | Lodger | — | Massachusetts |
| 74 | Thomas D. Sullivan THIS PERSON | 68 | Head | Maintenance Man | Ireland |
| 75 | Annie M. Sullivan | 57 | Wife | — | Ireland |
| 76 | Agnes T. Sullivan | 32 | Daughter | — | Massachusetts |
| 77 | Catherine J. Sullivan | 29 | Daughter | Stenographer | Massachusetts |
| 78 | Rita A. Sullivan | 26 | Daughter | Secretary | Massachusetts |
| 79 | Thomas J. Sullivan | 23 | Son | Elec Engineer | Massachusetts |
| 80 | Jeremiah X. Sullivan | 21 | Son | — | Massachusetts |
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)