AS
Agnes Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Agnes Sullivan across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 4-person household.
Age 72
b. ~1868
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Sullivan |
| Given Name | Agnes |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago City |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | G 8 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1868 |
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 Agnes | Age | Birth yr |
|---|---|---|---|---|
| Johanna Sullivan | Daughter | — | 38 | ~1902 |
| Katie Sullivan | Daughter | — | 31 | ~1909 |
| Julia Sullivan | Daughter | — | 30 | ~1910 |
| Agnes Sullivan | Head | — | 72 | ~1868 |
Census Appearances
1920
Cook, Illinois
Spouse, age 52
Cook, Illinois · implied b. ~1868 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Ann E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Other, age 63
Cook, Illinois · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Anna |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Ireland |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 72
Cook-County, Illinois · implied b. ~1868 — 4 household members
| Surname | Sullivan |
| Given Name | Agnes |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago City |
| Naturalization Status | Naturalized |
| Highest Grade | G 8 |
| 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 Agnes Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Agnes Sullivan
Head · 1940 · age 72 · b. ~1868 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00937-00321)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Daughter Petrecca | None | F | — | — |
| 2 | Daughter Petrecca | None | F | — | — |
| 3 | Patrick Cregan | 35 | Lodger | — | Ireland |
| 4 | Harry J Frederick | 56 | Head | Salesman | Pennsylvania |
| 5 | Sallie D Frederick | 58 | Wife | — | Ohio |
| 6 | Gertrude Frederick | 33 | Daughter | Saleslady | Colorado |
| 7 | Harry J Jr Frederick | 27 | Son | Laborer | Ohio |
| 8 | John J Payton | 43 | Head | Detective | Pennsylvania |
| 9 | S. Esther Payton | 43 | Wife | — | Illinois |
| 10 | John J Payton | 20 | Son | — | Illinois |
| 11 | Daniel K Payton | 16 | Son | — | Illinois |
| 12 | Agnes Sullivan THIS PERSON | 72 | Head | — | Ireland |
| 13 | Katie Sullivan | 31 | Daughter | — | Illinois |
| 14 | Johanna Sullivan | 38 | Daughter | Operator | Colorado |
| 15 | Julia Sullivan | 30 | Daughter | Teacher | Colorado |
| 16 | Julius Aromberg | 59 | Head | Salesman | Russia |
| 17 | Annie Aromberg | 44 | Wife | — | Russia |
| 18 | John G Mckenzie | 50 | Head | Foreman | Maryland |
| 19 | Leola Mckenzie | 46 | Wife | — | Maryland |
| 20 | Harry Krane | 28 | Son-in-law | Second Helper | Illinois |
| 21 | Gertrude Krane | 27 | Daughter | — | Maryland |
| 22 | Melvin Watson | 32 | Head | Manager | Illinois |
| 23 | Mable Watson | 31 | Wife | — | Nebraska |
| 24 | Shirley Watson | 11 | Daughter | — | Illinois |
| 25 | Donald Watson | 2 | Son | — | Illinois |
| 26 | James Byrne | 61 | Head | Lieutenant | Illinois |
| 27 | Mary F Byrne | 52 | Wife | — | Illinois |
| 28 | Stephen Keneski | 33 | Head | Machinist | Illinois |
| 29 | Elenore Keneski | 32 | Wife | — | Illinois |
| 30 | Marilyn Keneski | 4 | Daughter | — | Illinois |
| 31 | Betty Lou Keneski | 5 | Daughter | — | Illinois |
| 32 | Sandra Keneski | 1 | Daughter | — | Illinois |
| 33 | Stanley Majrezyk | 59 | Head | Laborer | Poland |
| 34 | Mary Majrezyk | 58 | Wife | — | Poland |
| 35 | Julia Wagner | 34 | Daughter | Stewardess | Illinois |
| 36 | Barbara Wagner | 14 | Granddaughter | — | Illinois |
| 37 | Mary Kepler | 77 | Head | — | Ohio |
| 38 | Henry Johnson | 36 | Son-in-law | Salesman | Illinois |
| 39 | Josephine Johnson | 35 | Daughter | 25 | East Chicago |
| 40 | Mary Wagner | 50 | Head | Teacher | Illinois |
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)