CS
Cornelius Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Cornelius Sullivan across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed), with identified parents Mary — first a head (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Sullivan |
| Given Name | Cornelius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Fireman |
| Industry | School |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 2500 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Fireman |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1899 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Cornelius | Age | Birth yr |
|---|---|---|---|---|
| Estelle Sullivan | Spouse | — | 30 | ~1910 |
| Donald Sullivan | Son | — | 5 | ~1935 |
| Cornelius Sullivan | Head | — | 41 | ~1899 |
| William Sullivan | Son | — | 2 | ~1938 |
Census Appearances
1920
Hudson, New …
Other, age 20
Hudson, New Jersey · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Cornelius |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Bookkeeper |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Son, age 30
Hudson, New Jersey · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Cornelius |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Officer |
| Industry | City Dept. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Head, age 41
Hudson-County, New Jersey · implied b. ~1899 — 4 household members
| Surname | Sullivan |
| Given Name | Cornelius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Occupation | Fireman |
| Industry | School |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 2500 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Cornelius Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Sullivan
b. ~1854
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Cornelius Sullivan
Head · 1940 · age 41 · b. ~1899 · New Jersey
★ 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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02408-00757)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theodore Renneberg | 35 | Head | Electrician | New Jersey |
| 2 | Ethel Renneberg | 34 | Wife | — | New Jersey |
| 3 | Steven J. Flournoy | 50 | Head | Driver | New Jersey |
| 4 | Theresa Flournoy | 47 | Wife | — | New Jersey |
| 5 | Edwin Crowley | 12 | Nephew | — | New Jersey |
| 6 | James Martine | 51 | Head | Orderly | Illinois |
| 7 | Mary Martine | 34 | Wife | — | Turkey |
| 8 | James Van Horn | 49 | Head | Carpenter | New Jersey |
| 9 | Anna M. Van Horn | 49 | Wife | — | Penn. |
| 10 | Frances A. Van Horn | 11 | Daughter | — | New Jersey |
| 11 | Cornelius Sullivan THIS PERSON | 41 | Head | Fireman | New Jersey |
| 12 | Estelle Sullivan | 30 | Wife | — | New Jersey |
| 13 | Donald Sullivan | 5 | Son | — | New Jersey |
| 14 | William Sullivan | 2 | Son | — | New Jersey |
| 15 | Margaret Delaney | 48 | Head | — | New Jersey |
| 16 | Mary G. Delaney | 37 | Sister | — | New Jersey |
| 17 | William J. Fox | 49 | Cousin | Machinist | New Jersey |
| 18 | John Cronin | 71 | Head | Watchman | Ireland |
| 19 | Nora Sharkey | 30 | Daughter | Attendant | New Jersey |
| 20 | Paul Lograsso | 50 | Head | Machinist | Italy |
| 21 | Grace Lograsso | 49 | Wife | — | Italy |
| 22 | Anne Fox | 43 | Head | Clerk | New Jersey |
| 23 | Lillian Fox | 53 | Sister | Clerk | New Jersey |
| 24 | Patrick Fox | 76 | Father | Carpenter | New Jersey |
| 25 | Sarah Mccarley | 62 | Head | — | New York |
| 26 | Marie Mccarley | 30 | Daughter | Clerk | New Jersey |
| 27 | Harold Gruber | 44 | Head | Clerk | New Jersey |
| 28 | Mary E. Gruber | 42 | Wife | — | Ireland |
| 29 | Gloria Gruber | 11 | Daughter | — | New Jersey |
| 30 | Harold J. Gruber | 9 | Son | — | New Jersey |
| 31 | Dominick Mccormack | 66 | Head | — | New Jersey |
| 32 | Mary Mccormack | 65 | Wife | — | New Jersey |
| 33 | Raymond Mccormack | 40 | Son | Clerk | New Jersey |
| 34 | Theodore Bukowski | 30 | Head | Salesman | New Jersey |
| 35 | Estelle Bukowski | 23 | Wife | Secretary | New Jersey |
| 36 | Rachel Northup | 58 | Head | Housework | Rhode Island |
| 37 | Wilbur Northup | 32 | Son | Photographer | Rhode Island |
| 38 | Clarence Ernest | 21 | Lodger | — | Information |
| 39 | John Tuhroy | None | Lodger | — | Information |
| 40 | Jacob Miller | 44 | Lodger | Watchman | New Jersey |
Related Census Records
Pedigree Summary
Cornelius
Gen 1 · 1 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)