RS
Robert Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Robert Sullivan across the 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Sullivan |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | New Berlin Village |
| Est. Birth Year | ~1927 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Patricia Sullivan | Daughter | — | 10 | ~1930 |
| Eileen Sullivan | Daughter | — | 17 | ~1923 |
| Agnes Sullivan | Daughter | — | 15 | ~1925 |
| Therese Sullivan | Daughter | — | 7 | ~1933 |
| Jeremiah Sullivan | Head | — | 45 | ~1895 |
| Jerry Sullivan | Son | — | 18 | ~1922 |
| Robert Sullivan | Son | — | 13 | ~1927 |
| Thomas Sullivan | Son | — | 3 | ~1937 |
| Charles Sullivan | Son | — | 6 | ~1934 |
| Danny Sullivan | Son | — | 12 | ~1928 |
| Genevieve Sullivan | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Sangamon, Illinois
Son, age 3
Sangamon, Illinois · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Robert Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sangamon-County, Illinois
Son, age 13
Sangamon-County, Illinois · implied b. ~1927 — 11 household members
| Surname | Sullivan |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sangamon |
| Highest Grade | 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Robert Sullivan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Sullivan
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Jerry Sullivan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Danny Sullivan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Sullivan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Sullivan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Sullivan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Sullivan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Therese Sullivan
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Sullivan
Sibling · 1940 · age 3
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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00887-00528)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Sullivan | 43 | Head | Farmer | Illinois |
| 2 | Grace Sullivan | 41 | Wife | — | Illinois |
| 3 | Mary Margaret Sullivan | 17 | Daughter | — | Illinois |
| 4 | Dorothy A. Sullivan | 15 | Daughter | — | Illinois |
| 5 | John T. Jr. Sullivan | 14 | Son | Laborer | Illinois |
| 6 | Elenor J. Sullivan | 12 | Daughter | — | Illinois |
| 7 | Marcella Sullivan | 10 | Daughter | — | Illinois |
| 8 | Catherine Sullivan | 9 | Daughter | — | Illinois |
| 9 | William Sullivan | 8 | Son | — | Illinois |
| 10 | Dolores Sullivan | 5 | Daughter | — | Illinois |
| 11 | Kevin Byron Sullivan | 3 | Son | — | Illinois |
| 12 | Frank Pratt | 34 | Head | Laborer | Kentucky |
| 13 | Gertrude Pratt | 31 | Wife | — | Kentucky |
| 14 | Helen Pratt | 11 | Daughter | — | Illinois |
| 15 | Kenney Pratt | 9 | Son | — | Illinois |
| 16 | Wanda Pratt | 4 | Daughter | — | Illinois |
| 17 | Floyd Prince | 19 | Boarder | Laborer | Kentucky |
| 18 | John Roesch | 75 | Head | — | Illinois |
| 19 | Jeremiah Sullivan | 45 | Head | Farmer | Illinois |
| 20 | Genevieve Sullivan | 41 | Wife | — | Illinois |
| 21 | Jerry Jr. Sullivan | 18 | Son | Laborer | Illinois |
| 22 | Eileen Sullivan | 17 | Daughter | — | Illinois |
| 23 | Agnes M. Sullivan | 15 | Daughter | — | Illinois |
| 24 | Robert E. Sullivan THIS PERSON | 13 | Son | — | Illinois |
| 25 | Danny J. Sullivan | 12 | Son | — | Illinois |
| 26 | Patricia A. Sullivan | 10 | Daughter | — | Illinois |
| 27 | Therese V. Sullivan | 7 | Daughter | — | Illinois |
| 28 | Charles Sullivan | 6 | Son | — | Illinois |
| 29 | Thomas D. Sullivan | 3 | Son | — | Illinois |
| 30 | Alfred Walker | 51 | Head | Telegraph Oper | Tennessee |
| 31 | Katherine Walker | 47 | Wife | — | Missouri |
| 32 | Naydine Walker | 25 | Daughter | Teacher | Missouri |
| 33 | Alfred S. Walker | 20 | Son | Laborer | Illinois |
| 34 | Frances Walker | 19 | Daughter | Housework | Illinois |
| 35 | William Walker | 17 | Son | Laborer | Missouri |
| 36 | Sallie Walker | 16 | Daughter | — | Illinois |
| 37 | Elizabeth Walker | 13 | Daughter | — | Illinois |
| 38 | Winthrop Walker | 10 | Son | — | Illinois |
| 39 | George Luken | 51 | Head | Farmer | Illinois |
| 40 | Mary Luken | 55 | Wife | — | Illinois |
Related Census Records
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)