DS
Dennis Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-London-County, Connecticut
Our Model Tree links this Dennis Sullivan across the 1910, 1920, 1930 and 1940 US Censuses in New-London-County, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 3-person household.
Age 75
b. ~1865
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-London-County, Connecticut |
| Surname | Sullivan |
| Given Name | Dennis R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Norwich |
| 1935 Residence (County) | New London |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Norwich |
| Est. Birth Year | ~1865 |
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 Dennis | Age | Birth yr |
|---|---|---|---|---|
| Dennis Sullivan | Head | — | 75 | ~1865 |
| Mary Sullivan | Daughter | — | 42 | ~1898 |
| Nellie Sullivan | Spouse | — | 68 | ~1872 |
Census Appearances
1910
New Haven, …
Other, age 45
New Haven, Connecticut · implied b. ~1865 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Foundry |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
New London, …
Head, age 54
New London, Connecticut · implied b. ~1866 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Spinner |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1886 |
| Birthplace (normalized) | ireland |
1930
New Haven, …
Head, age 65
New Haven, Connecticut · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
New-London-County, Connecticut
Head, age 75
New-London-County, Connecticut · implied b. ~1865 — 3 household members
| Surname | Sullivan |
| Given Name | Dennis R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Norwich |
| 1935 Residence (County) | New London |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | 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 Dennis Sullivan across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Dennis Sullivan
Head · 1940 · age 75 · b. ~1865 · Connecticut
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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 — New-London-County, Connecticut
Open full size
1940 US Federal Census — New-London-County, Connecticut
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00525-00615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dennis R. Sullivan THIS PERSON | 75 | Head | — | Ireland |
| 2 | Nellie J. Sullivan | 68 | Wife | — | New York |
| 3 | Mary J. Sullivan | 42 | Daughter | Textile Worker | Connecticut |
| 4 | Albert Baurich | 25 | Head | Electrician | Connecticut |
| 5 | Janice Baurich | 22 | Wife | — | Connecticut |
| 6 | Elmer F. Myers | 32 | Head | Auto Repair Man | Connecticut |
| 7 | Catherine M. Myers | 32 | Wife | — | Connecticut |
| 8 | Eleanor M. Myers | 8 | Daughter | — | Connecticut |
| 9 | Alfred P. Staelner | 39 | Head | Inspector | Connecticut |
| 10 | Vivian A. Staelner | 32 | Wife | — | Connecticut |
| 11 | Ann P. Staelner | 11 | Daughter | — | Connecticut |
| 12 | Beverly J. Staelner | 10 | Daughter | — | Connecticut |
| 13 | Ernest E. Staelner | 8 | Son | — | Connecticut |
| 14 | Charles H. Preston | 32 | Head | Auto Repair Man | Connecticut |
| 15 | Veronica R. Preston | 28 | Wife | — | Connecticut |
| 16 | Effie L. Preston | 64 | Head | Grade Teacher | Connecticut |
| 17 | Rose Butova | 50 | Head | — | Poland |
| 18 | Anna Butova | 28 | Daughter | Machine Tender | Connecticut |
| 19 | Stanley Butova | 24 | Son | Laborer | Connecticut |
| 20 | Andrew Butova | 20 | Son | — | Connecticut |
| 21 | Frank Butova | 20 | Son | — | Connecticut |
| 22 | James Butova | 17 | Son | — | Connecticut |
| 23 | Peter Butova | 15 | Son | — | Connecticut |
| 24 | Edward Butova | 11 | Son | — | Connecticut |
| 25 | Roland A. Bennett | 38 | Head | Junior Engineer | Connecticut |
| 26 | Eloise O. Bennett | 36 | Wife | — | Connecticut |
| 27 | Joan Bennett | 13 | Daughter | — | Ohio |
| 28 | Gay Bennett | 9 | Daughter | — | Connecticut |
| 29 | J. Austin Young | 48 | Head | Owner & Prop. | Connecticut |
| 30 | Myrtle F. Young | 44 | Wife | — | Connecticut |
| 31 | David S. Young | 11 | Son | — | Connecticut |
| 32 | George W. Galvin | 42 | Head | Manager & Salesman | Massachusetts |
| 33 | Helen M. Galvin | 35 | Wife | — | Connecticut |
| 34 | Fredrick S. Tourlottotte | 28 | Head | Printer | Connecticut |
| 35 | Marion O. Tourlottotte | 27 | Wife | — | Connecticut |
| 36 | Anne L. Tourlottotte | 5 | Daughter | — | Connecticut |
| 37 | Rae Tourlottotte | 2 | Daughter | — | Connecticut |
| 38 | Frank Mitchell | 39 | Head | Mail Carrier | Connecticut |
| 39 | Bertha Mitchell | 39 | Wife | Bookkeeper | Connecticut |
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)