CS
Catherine Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Catherine Sullivan across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Marty — first a daughter (b.~1894), then head of a 5-person household.
Age 46
b. ~1894
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Sullivan |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1894 |
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 Catherine | Age | Birth yr |
|---|---|---|---|---|
| Catherine Sullivan | Daughter | — | 46 | ~1894 |
| Marty Sullivan | Head | — | 76 | ~1864 |
| Margaret Sullivan | Other | — | 35 | ~1905 |
| Joseph Sullivan | Other | — | 7 | ~1933 |
| Joseph Sullivan | Son | — | 44 | ~1896 |
Census Appearances
1920
Cook, Illinois
Other, age 25
Cook, Illinois · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Catherine |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Other, age 35
Cook, Illinois · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Catherine |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 46
Cook-County, Illinois · implied b. ~1894 — 5 household members
| Surname | Sullivan |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Catherine Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Marty Sullivan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Marty Sullivan
b. ~1864
Source father
● Household
· direct · ~0.92
This person
Anchor record
Catherine Sullivan
Daughter · 1940 · age 46 · b. ~1894 · Illinois
★ You are viewing this record
Sibling
Joseph Sullivan
Sibling · 1940 · age 44
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 — 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-t0627-00958-00328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Slama | 57 | Lodger | Musician | Illinois |
| 2 | Louis H. Kamradt | 60 | Head | Clerk Office | Illinois |
| 3 | Tillie Kamradt | 59 | Wife | — | Illinois |
| 4 | Ervin Kamradt | 35 | Son | Telephone Repairing | Illinois |
| 5 | Maxine Kamradt | 30 | Daughter-in-law | — | Michigan |
| 6 | Irvin Kamradt | 7 | Grandson | — | Illinois |
| 7 | Walter A. Horn | 40 | Head | Superintendent Of Shipping | Illinois |
| 8 | Irene Horn | 35 | Wife | — | Illinois |
| 9 | Elsie S. Larson | 38 | Head | Bookkeeper | Illinois |
| 10 | Johanna Larson | 78 | Mother | — | Sweden |
| 11 | Mary Larson | 52 | Sister | Seamstress | Sweden |
| 12 | Mabel Wilson | 47 | Sister | Milliner | Illinois |
| 13 | James Wilson | 12 | Nephew | — | Illinois |
| 14 | Michael Cooney | 53 | Head | Auditor | Illinois |
| 15 | Margaret Cooney | 49 | Wife | — | Illinois |
| 16 | Michael Cooney | 17 | Son | — | Illinois |
| 17 | William Cooney | 10 | Son | — | Illinois |
| 18 | William Mahoney | 75 | Head | Buyer | Iowa |
| 19 | Ellen Mahoney | 72 | Wife | — | Canada-English |
| 20 | Thomas Mchugh | 70 | Brother-in-law | — | Canada-English |
| 21 | Carl D. Nyberg | 58 | Head | Yard Foreman | Sweden |
| 22 | Hilma Nyberg | 55 | Wife | — | Sweden |
| 23 | Harry Nyberg | 25 | Son | Order Clerk | Illinois |
| 24 | Oscar Nyberg | 48 | Brother-in-law | Molder | Sweden |
| 25 | Raymond Nyberg | 17 | Nephew | — | Illinois |
| 26 | Ralph Nyberg | 16 | Nephew | — | Illinois |
| 27 | Marty Sullivan | 76 | Head | — | Eire |
| 28 | Catherine Sullivan THIS PERSON | 46 | Daughter | — | Illinois |
| 29 | Joseph Sullivan | 44 | Son | Conductor | Illinois |
| 30 | Margaret Sullivan | 35 | Daughter-in-law | — | Illinois |
| 31 | Joseph Jr. Sullivan | 7 | Grandson | — | Illinois |
| 32 | John Joyce | 36 | Head | Conductor | Illinois |
| 33 | Dorothy Joyce | 36 | Wife | — | Eire |
| 34 | John Joyce | 11 | Son | — | Illinois |
| 35 | Dorothy Joyce | 8 | Daughter | — | Illinois |
| 36 | Michael Jones | 69 | Head | Watchman | Eire |
| 37 | William Mahoney | 36 | Son-in-law | Manager | Illinois |
| 38 | Theresa Mahoney | 32 | Daughter | — | Illinois |
| 39 | George Russell | 57 | Head | School Engineer | England |
| 40 | Sybil Russell | 50 | Wife | Teacher | Illinois |
Pedigree Summary
Catherine + 1 sibling
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)