JC
James Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Callahan across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 4-person household.
Age 65
b. ~1875
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1875 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Raymond Callahan | Son | — | 23 | ~1917 |
| Nellie Callahan | Spouse | — | 64 | ~1876 |
| Frances Callahan | Daughter | — | 21 | ~1919 |
| James Callahan | Head | — | 65 | ~1875 |
Census Appearances
1920
Cook, Illinois
Head, age 40
Cook, Illinois · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Metal worker |
| Industry | Federal |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Cook, Illinois
Head, age 51
Cook, Illinois · implied b. ~1879 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | City Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 5 |
| Veteran | Sp. |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Cook-County, Illinois
Head, age 65
Cook-County, Illinois · implied b. ~1875 — 4 household members
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 James Callahan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Callahan
Head · 1940 · age 65 · b. ~1875 · 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
39 people indexed on this census page (nara:1940:m-t0627-00972-00286)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alyvia Bullinger | 73 | Head | — | Germany |
| 2 | Antoinette Hamech | 63 | Head | — | Germany |
| 3 | James Broughton | 49 | Head | Messenger | Germany |
| 4 | Charles Proll | 50 | Head | Tailoring | Missouri |
| 5 | Lillian Proll | 49 | Wife | — | Illinois |
| 6 | John Proll | 27 | Son | — | Illinois |
| 7 | Katherine Proll | 25 | Daughter | New Worker | Illinois |
| 8 | Charles Proll | 12 | Son | — | Illinois |
| 9 | Jane Proll | 7 | Daughter | — | Illinois |
| 10 | Joan Proll | 7 | Daughter | — | Illinois |
| 11 | Thomas J. Carty | 59 | Head | Yard Clerk | Missouri |
| 12 | Mary Carty | 55 | Wife | — | Illinois |
| 13 | Thomas J. Carty | 28 | Son | Arm Truck Driver | Missouri |
| 14 | Martin Carty | 22 | Son | Valve Inspector | Illinois |
| 15 | Morris Beilerman | 47 | Head | Shoe Repairer | Poland |
| 16 | Yetta Beilerman | 41 | Wife | — | Poland |
| 17 | Ruth Beilerman | 14 | Daughter | — | Illinois |
| 18 | Michael Augustino | 39 | Head | Paint Seller | Illinois |
| 19 | Lucille Augustino | 30 | Wife | — | D.C. |
| 20 | Carmella Augustino | 11 | Daughter | — | Illinois |
| 21 | Pasquale Augustino | 8 | Son | — | Illinois |
| 22 | Frank J. Morea | 66 | Head | — | Illinois |
| 23 | Ella Morea | 51 | Wife | — | Illinois |
| 24 | Paul Morea | 27 | Son | — | Illinois |
| 25 | Marguerite Morea | 14 | Daughter | — | Illinois |
| 26 | "Roger ""A""" Morea | 19 | Son | Asst Cook | Illinois |
| 27 | "Francis ""A""" Morea | 17 | Son | Field Laborer | Illinois |
| 28 | James Callahan THIS PERSON | 65 | Head | — | Indiana |
| 29 | Nellie Callahan | 64 | Wife | — | Irish Free State |
| 30 | Raymond Callahan | 23 | Son | Valve Fitter | Illinois |
| 31 | Frances Callahan | 21 | Daughter | Assembler | Illinois |
| 32 | Rudolph Sr. Wilms | 65 | Head | Landscaper | Germany |
| 33 | Agusta Wilms | 65 | Wife | — | Germany |
| 34 | Paul Wilms | 37 | Son | Produce Man | Germany |
| 35 | Rudolph Jr. Wilms | 35 | Son | Filling Clerk | Germany |
| 36 | Gertrude Wilms | 27 | Daughter | New Worker | Illinois |
| 37 | Ruth Wilms | 25 | Daughter | Filling Clerk | Illinois |
| 38 | Helmuth Wilms | 27 | Son | Delivery Clerk | Illinois |
| 39 | Hector Pioneras | 25 | Head | Furniture Salesman | 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)