DS
Dennis Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Missouri
Our Model Tree links this Dennis Sullivan across the 1920, 1930 and 1940 US Censuses in Clinton-County, Missouri (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1904), then head of a 5-person household.
Age 36
b. ~1904
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Missouri |
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Clinton Township |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Farmer |
| Township / Ward | Clinton Township |
| Est. Birth Year | ~1904 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dennis | Age | Birth yr |
|---|---|---|---|---|
| Mary Sullivan | Daughter | — | 27 | ~1913 |
| James Sullivan | Son | — | 32 | ~1908 |
| Catherine Sullivan | Other | — | 73 | ~1867 |
| John Sullivan | Head | — | 75 | ~1865 |
| Dennis Sullivan | Son | — | 36 | ~1904 |
Census Appearances
1920
Clinton, Missouri
Son, age 14
Clinton, Missouri · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Clinton, Missouri
Son, age 24
Clinton, Missouri · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dennis W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Clinton-County, Missouri
Son, age 36
Clinton-County, Missouri · implied b. ~1904 — 5 household members
| Surname | Sullivan |
| Given Name | Dennis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Clinton Township |
| 1935 Residence (County) | Clinton |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Sullivan
b. ~1862
Source father
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Sullivan
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dennis Sullivan
Son · 1940 · age 36 · b. ~1904 · Missouri
★ You are viewing this record
Sibling
Mary Sullivan
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sullivan
Sibling · 1940 · age 32
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 — Clinton-County, Missouri
Open full size
1940 US Federal Census — Clinton-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02098-00033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arlene Moulder | 3 | Daughter | — | Missouri |
| 42 | Virgil Moulder | 1 | Son | — | Missouri |
| 43 | Logan Mccoy | 56 | Head | Farmer | Missouri |
| 44 | Elsie E. Mccoy | 56 | Wife | — | Missouri |
| 45 | Morton Mccoy | 31 | Son | Laborer | Missouri |
| 46 | Emma Mccoy | 29 | Daughter | Teacher | Missouri |
| 47 | Hazel Mccoy | 25 | Daughter | Teacher | Missouri |
| 48 | Lloyd Mccoy | 22 | Son | Laborer | Missouri |
| 49 | Harry Mccoy | 19 | Son | Laborer | Missouri |
| 50 | Fred Goodwin | 61 | Head | Farmer | Missouri |
| 51 | Nellie R. Goodwin | 53 | Wife | — | Missouri |
| 52 | Mont Cook | 64 | Head | Farmer | Missouri |
| 53 | Nannie Cook | 69 | Wife | — | Missouri |
| 54 | Rex Cook | 41 | Son | Farmer | Missouri |
| 55 | Markus Hawkins | 55 | Head | Proprietor | Missouri |
| 56 | Nancy Hawkins | 55 | Wife | — | Missouri |
| 57 | Nevis D. Chancellor | 33 | Head | Farmer | Missouri |
| 58 | Flossie Chancellor | 27 | Wife | — | Missouri |
| 59 | Bonnie Chancellor | 3 | Daughter | — | Missouri |
| 60 | James Chancellor | 2 | Son | — | Missouri |
| 61 | John L. Sullivan | 75 | Head | — | Ohio |
| 62 | Dennis Sullivan THIS PERSON | 36 | Son | Farmer | Missouri |
| 63 | James Sullivan | 32 | Son | Farmer | Missouri |
| 64 | Mary Sullivan | 27 | Daughter | — | Missouri |
| 65 | Catherine Sullivan | 73 | Sister | — | Missouri |
| 66 | Logan J. Dale | 25 | Head | Farmer | Missouri |
| 67 | Dorothy Dale | 20 | Wife | — | Missouri |
| 68 | Bonnie V. Dale | 2 | Son | — | Missouri |
| 69 | D. Mason | 45 | Head | Farmer | Missouri |
| 70 | Carrie Mason | 46 | Wife | — | Missouri |
| 71 | John Q. Bailey | 71 | Head | Farmer | Missouri |
| 72 | Lizzie Bailey | 69 | Sister | — | Missouri |
| 73 | Richard Clutter | 33 | Head | Laborer | Missouri |
| 74 | Edna J. Clutter | 30 | Wife | — | Missouri |
| 75 | Eleanor Clutter | 12 | Daughter | — | Missouri |
| 76 | Richard Clutter | 9 | Son | — | Missouri |
| 77 | Alfred King | 39 | Head | Farmer | Missouri |
| 78 | Dorothy R. King | 38 | Wife | — | Missouri |
| 79 | Darlene King | 10 | Daughter | — | Missouri |
| 80 | Letha King | 9 | Daughter | — | Missouri |
Related Census Records
Pedigree Summary
Dennis + 2 siblings
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)