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John Kennedy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Kennedy across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 4-person household.
Age 63
b. ~1877
Male
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Kennedy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Janitor |
| Industry | Comfort Co. |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1144 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Janitor |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1877 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Kennedy | Daughter | — | 26 | ~1914 |
| Ellen Kennedy | Daughter | — | 24 | ~1916 |
| John Kennedy | Head | — | 63 | ~1877 |
| Edward Kennedy | Son | — | 27 | ~1913 |
Census Appearances
1920
Cook, Illinois
Head, age 43
Cook, Illinois · implied b. ~1877 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1891 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Coffee Grinder |
| Industry | Coffee House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1897 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 52
Cook, Illinois · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 31 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Roaster |
| Industry | Coffees |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Gaelic |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 63
Cook-County, Illinois · implied b. ~1877 — 4 household members
| Surname | Kennedy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Occupation | Janitor |
| Industry | Comfort Co. |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1144 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 John Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Kennedy
Head · 1940 · age 63 · b. ~1877 · 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-t0627-00971-00655)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Etta M White | 58 | Lodger | — | Wisconsin |
| 2 | John A White | 25 | Lodger's son | — | Illinois |
| 3 | Ralph P Valerio | 30 | Head | Musician | Italy |
| 4 | Mary Valerio | 42 | Wife | — | Italy |
| 5 | Ralph Jr. Valerio | 20 | Son | — | New York |
| 6 | Ralph Antoniello | 42 | Head | Proprietor | Italy |
| 7 | Madeline Antoniello | 37 | Wife | — | Illinois |
| 8 | Ralph Jr. Antoniello | 12 | Son | — | Illinois |
| 9 | Bernadette Antoniello | 3 | Daughter | — | Illinois |
| 10 | Cosmo Baldo | 39 | Lodger | Oiler | Illinois |
| 11 | Vincent Liori | 58 | Head | Laborer | Italy |
| 12 | Angelina Liori | 45 | Wife | — | Italy |
| 13 | Mary Liori | 20 | Daughter | New Worker | Illinois |
| 14 | John Liori | 25 | Son | Laborer | New York |
| 15 | Catherine Ryan | 27 | Head | — | Illinois |
| 16 | Mary Ryan | 6 | Daughter | — | Illinois |
| 17 | Nancy Ryan | 3 | Daughter | — | Illinois |
| 18 | Edna Weir | 20 | Sister | Typist | Illinois |
| 19 | Tony Gerardis | 62 | Head | Laborer | Italy |
| 20 | Lena Gerardis | 61 | Wife | — | Italy |
| 21 | Arthur Gerardis | 22 | Son | Laborer | Montana |
| 22 | Clara Gerardis | 19 | Daughter | — | Illinois |
| 23 | Albert Gerardis | 16 | Son | — | Illinois |
| 24 | Samuel Placko | 43 | Head | Cabinet Maker | Czechoslovakia |
| 25 | Elizabeth Placko | 34 | Wife | Pantry Helper | Czechoslovakia |
| 26 | Martin Placko | 17 | Son | New Worker | Czechoslovakia |
| 27 | James O'Reilly | 42 | Head | Loader | Ireland |
| 28 | Catherine O'Reilly | 41 | Wife | — | Ireland |
| 29 | John O'Reilly | 14 | Son | — | Illinois |
| 30 | James Jr. O'Reilly | 13 | Son | — | Illinois |
| 31 | Kathleen O'Reilly | 11 | Daughter | — | Illinois |
| 32 | Philip O'Reilly | 8 | Son | — | Illinois |
| 33 | Thomas M O'Reilly | 6 | Son | — | Illinois |
| 34 | John Kennedy THIS PERSON | 63 | Head | Janitor | Ireland |
| 35 | Edward Kennedy | 27 | Son | Inker | Illinois |
| 36 | Mary Kennedy | 26 | Daughter | — | Illinois |
| 37 | Ellen Kennedy | 24 | Daughter | Packer | Illinois |
| 38 | Tony Dote | 65 | Head | — | Italy |
| 39 | Rose Dote | 69 | Wife | — | Italy |
| 40 | Ralph Dote | 36 | Son | Mixer | 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)