FS
Francis Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Francis Sullivan across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Jerry & Timothy — first a head (b.~1893), then head of a 5-person household.
Age 47
b. ~1893
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Sullivan |
| Given Name | Francis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Police Officer |
| Industry | City |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2498 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Police Officer |
| Township / Ward | Chicago |
| Est. Birth Year | ~1893 |
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 Francis | Age | Birth yr |
|---|---|---|---|---|
| Josephine Lyman | Other | — | 60 | ~1880 |
| Francis Sullivan | Son | — | 16 | ~1924 |
| William Lyman | Other | — | 54 | ~1886 |
| Isabel Sullivan | Spouse | — | 39 | ~1901 |
| Francis Sullivan | Head | — | 47 | ~1893 |
Census Appearances
1910
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1899 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 23
Cook, Illinois · implied b. ~1897 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Teamster |
| Industry | Meat Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 33
Cook, Illinois · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Francis J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Post Office Clerk |
| Industry | U.S. Mail |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 47
Cook-County, Illinois · implied b. ~1893 — 5 household members
| Surname | Sullivan |
| Given Name | Francis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Police Officer |
| Industry | City |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2498 |
| Highest Grade | No 7 |
| 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 Francis Sullivan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jerry Sullivan (~0.92 confidence) and father Timothy Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and mother Johanna Sullivan (~0.92 confidence) and mother Annie Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jerry Sullivan
b. ~1857
Source father
● Household
· direct · ~0.92
Father
Timothy Sullivan
b. ~1860
Source father
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Johanna Sullivan
b. ~1864
Source mother
● Household
· direct · ~0.92
Mother
Annie Sullivan
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Francis Sullivan
Head · 1940 · age 47 · b. ~1893 · 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-t0627-01016-00592)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J. Healy | 58 | Head | Foreman | England |
| 2 | Sarah Ann Healy | 54 | Wife | Housewife | Wales |
| 3 | Nora G. Healy | 25 | Daughter | Stenographer | England |
| 4 | Sara Healy | 20 | Daughter | Stenographer | England |
| 5 | John Jr. Healy | 17 | Son | — | England |
| 6 | Thomas P. Healy | 15 | Son | — | England |
| 7 | Harry Lefferts | 51 | Head | Mail Carrier | New Jersey |
| 8 | Emma Lefferts | 43 | Wife | Housewife | Illinois |
| 9 | Eunice Lefferts | 18 | Daughter | — | Illinois |
| 10 | Edward Lefferts | 14 | Son | — | Illinois |
| 11 | Jack O. Schmidt | 78 | Head | — | Germany |
| 12 | Edward Schmidt | 46 | Son | Mail Clerk | Illinois |
| 13 | Francis Sullivan THIS PERSON | 47 | Head | Police Officer | Illinois |
| 14 | Isabel Sullivan | 39 | Wife | — | Illinois |
| 15 | Francis Jr. Sullivan | 16 | Son | — | Illinois |
| 16 | Josephine Lyman | 60 | Mother | — | Illinois |
| 17 | William Lyman | 54 | Brother | Shipping Clerk | Illinois |
| 18 | Joseph Kowalski | 57 | Head | Knitter-Winder | Austria |
| 19 | Anna Kowalski | 52 | Wife | — | Austria |
| 20 | Walter Kowalski | 35 | Son | Rec. Clerk | Illinois |
| 21 | Anna Kowalski | 34 | Daughter | — | Illinois |
| 22 | Angeline Kowalski | 32 | Daughter | — | Illinois |
| 23 | Helen Kowalski | 30 | Daughter | — | Illinois |
| 24 | Joseph Jr. Kowalski | 30 | Son | Carpet Layer | Illinois |
| 25 | Frances Kowalski | 20 | Daughter | Book Lady | Illinois |
| 26 | Rose Kowalski | 19 | Daughter | Salesperson | Illinois |
| 27 | Viola Kowalski | 18 | Daughter | — | Illinois |
| 28 | Francis Kowalski | 18 | Daughter | — | Illinois |
| 29 | Raymond Kowalski | 16 | Son | — | Illinois |
| 30 | James T. O'Malley | 58 | Head | Proprietor | Illinois |
| 31 | Sophie O'Malley | 55 | Wife | — | Illinois |
| 32 | Thomas J. O'Malley | 26 | Son | Clerk | Illinois |
| 33 | James Jr. O'Malley | 24 | Son | Plumber'S Helper | Illinois |
| 34 | Helen E. O'Malley | 25 | Daughter | Stenographer | Illinois |
| 35 | Geraldine O'Malley | 22 | Daughter | Stenographer | Illinois |
| 36 | Lorraine O'Malley | 20 | Daughter | Stenographer | Illinois |
| 37 | Jean O'Malley | 18 | Daughter | Stenographer | Illinois |
| 38 | Robert O'Malley | 17 | Son | — | Illinois |
| 39 | Walter Casey | 44 | Son-in-law | Mail Clerk | Illinois |
| 40 | Walter Buchholz | 47 | Head | Claim Clerk | Illinois |
Pedigree Summary
Francis
Gen 1 · 5 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)