JF
John Finn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Finn across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 11-person household.
Age 26
b. ~1914
Male
Son
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Finn |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| Additional Details | |
| Occupation | Punch Press |
| Industry | Baking Equip. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Punch Press |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Finn | Spouse | — | 47 | ~1893 |
| John Finn | Head | — | 52 | ~1888 |
| Patricia Finn | Daughter | — | 5 | ~1935 |
| John Finn | Son | — | 26 | ~1914 |
| William Finn | Son | — | 14 | ~1926 |
| Rita Finn | Daughter | — | 7 | ~1933 |
| Allen Zalud | Other | — | 28 | ~1912 |
| Barbara Zalud | Other | — | 3 | ~1937 |
| Florence Finn | Other | — | 23 | ~1917 |
| Dorothy Zalud | Daughter | — | 20 | ~1920 |
| Robert Finn | Son | — | 16 | ~1924 |
Census Appearances
1930
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fenn |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 26
Cook-County, Illinois · implied b. ~1914 — 11 household members
| Surname | Finn |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| Occupation | Punch Press |
| Industry | Baking Equip. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| 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 John Finn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Finn
Son · 1940 · age 26 · b. ~1914 · Illinois
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Sibling
Dorothy Zalud
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Finn
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Finn
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Finn
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Finn
Sibling · 1940 · age 7
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-t0627-00976-00664)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bima Amatony | 38 | Sister-in-law | H | Illinois |
| 42 | Theodore Reuter | 40 | Head | Polish Maker | Poland |
| 43 | Betty Reuter | 40 | Wife | Waitress | Ohio |
| 44 | Betty J. Walton | 23 | Daughter | Dice Girl | Ohio |
| 45 | David Walton | 5 | Stepson | — | Illinois |
| 46 | John Finn | 52 | Head | Header Operator | Illinois |
| 47 | Mary Finn | 47 | Wife | Meat Carver | Illinois |
| 48 | John Jr. Finn THIS PERSON | 26 | Son | Punch Press | Illinois |
| 49 | Florence Finn | 23 | Daughter-in-law | H | Illinois |
| 50 | Robert Finn | 16 | Son | Delivery Boy (After School) | Illinois |
| 51 | William Finn | 14 | Son | S | Illinois |
| 52 | Rita May Finn | 7 | Daughter | — | Illinois |
| 53 | Patricia Finn | 5 | Daughter | — | Illinois |
| 54 | Allen Zalud | 28 | Son-in-law | Embosser | Illinois |
| 55 | Dorothy Zalud | 20 | Daughter | H | Illinois |
| 56 | Barbara Zalud | 3 | Granddaughter | — | Illinois |
| 57 | Noah Lerault | 36 | Head | Truck Loader | Louisiana |
| 58 | Bertha May Lerault | 30 | Wife | H | Alabama |
| 59 | Ella Foster | 24 | Sister | Saleswoman | Louisiana |
| 60 | Elroy Foster | 29 | Brother-in-law | Floorman | Louisiana |
| 61 | Elroy Jr. Foster | 6 | Nephew | — | Louisiana |
| 62 | Albert Martinelli | 30 | Head | Waiter | Pennsylvania |
| 63 | Lilly E. Mccall | 45 | Head | Power Sewing Machine Operator | Illinois |
| 64 | Harry Tongue | 22 | Son | Athletic Asst. | Illinois |
| 65 | Raymond Mccall | 20 | Son | Athletic Asst. | Illinois |
| 66 | William Mccall | 13 | Son | — | Illinois |
| 67 | Joseph Sucato | 49 | Son-in-law | Barber | Sicily |
| 68 | Lilly Sucato | 26 | Daughter | H | Illinois |
| 69 | Anthony Sucato | 5 | Son | — | Illinois |
| 70 | Michael Sucato | 3 | Son | — | Illinois |
| 71 | Harriett Williams | 69 | Head | U | Illinois |
| 72 | Charles Williams | 46 | Son | U | Illinois |
| 73 | Anthony Bacantino | 52 | Head | Meat Packer | Italy |
| 74 | Charles Boeck | 31 | Head | Junior Clerk | New York |
| 75 | Patricia Boeck | 30 | Wife | H | Illinois |
| 76 | Lamont Jackson | 28 | Head | Chef | Missouri |
| 77 | Etta Jackson | 27 | Wife | Waitress | Missouri |
| 78 | John Habersohn | 32 | Head | Millwright | Illinois |
| 79 | Sarah Habersohn | 24 | Wife | Part Time Saleswoman | Illinois |
| 80 | Thomas Perry | 56 | Head | Chauffer | Indiana |
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)