JK
John Kenny — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Kenny across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Kenny |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Kenny | Spouse | — | 31 | ~1909 |
| Martin Kenny | Son | — | 10 | ~1930 |
| Catherine Kenny | Daughter | — | 3 | ~1937 |
| Patrick Kenny | Son | — | 1 | ~1939 |
| Margaret Kenny | Daughter | — | 6 | ~1934 |
| John Kenny | Head | — | 44 | ~1896 |
| Matthew Kenny | Son | — | 5 | ~1935 |
| John Kenny | Son | — | 11 | ~1929 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kinney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 11
Cook-County, Illinois · implied b. ~1929 — 8 household members
| Surname | Kenny |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| 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 Kenny across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kenny
Son · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Martin Kenny
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Kenny
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Kenny
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Kenny
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Kenny
Sibling · 1940 · age 5
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-t0627-00945-00016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elspet Mann | 70 | Head | — | Scotland |
| 42 | Alex Mann | 43 | Son | Carpenter | Scotland |
| 43 | Hugh Mann | 41 | Son | Carpenter | Scotland |
| 44 | Margaret Ewart | 44 | Daughter | Piano Teacher | Scotland |
| 45 | Hugh Ewart | 15 | Grandson | — | Scotland |
| 46 | Anton Kowalski | 63 | Head | — | Poland |
| 47 | Mary Kowalski | 53 | Wife | — | Poland |
| 48 | Joseph Kowalski | 23 | Son | New Worker | Illinois |
| 49 | Helen Kowalski | 21 | Daughter | Laborer | Illinois |
| 50 | Jean Kowalski | 17 | Daughter | Laborer | Illinois |
| 51 | Tony Kowalski | 11 | Son | — | Illinois |
| 52 | Orville Barrett | 42 | Head | Carpenter | Kentucky |
| 53 | Lydia Barrett | 39 | Wife | — | Illinois |
| 54 | Evelyn Mae Barrett | 15 | Daughter | — | Illinois |
| 55 | O'Delle Barrett | 14 | Son | — | Illinois |
| 56 | Robert Barrett | 9 | Son | — | Illinois |
| 57 | Donald Barrett | 3 | Son | — | Illinois |
| 58 | Carol Barrett | 1 | Daughter | — | Illinois |
| 59 | John Kenny | 44 | Head | Clerk | Illinois |
| 60 | Margaret Kenny | 31 | Wife | — | Illinois |
| 61 | John Kenny THIS PERSON | 11 | Son | — | Illinois |
| 62 | Martin Kenny | 10 | Son | — | Illinois |
| 63 | Margaret Kenny | 6 | Daughter | — | Illinois |
| 64 | Matthew Kenny | 5 | Son | — | Illinois |
| 65 | Catherine Kenny | 3 | Daughter | — | Illinois |
| 66 | Patrick Kenny | 1 | Son | — | Illinois |
| 67 | Thomas Kemp | 49 | Head | Truck Driver | Illinois |
| 68 | Angeline Kemp | 59 | Wife | — | Illinois |
| 69 | Angeline Kemp | 13 | Daughter | — | Illinois |
| 70 | Peter Justus | 47 | Head | Moulder | Lithuania |
| 71 | Sarah Justus | 42 | Wife | — | Wisconsin |
| 72 | Victor Justus | 20 | Son | Breakage | Wisconsin |
| 73 | Edward Justus | 18 | Son | — | Wisconsin |
| 74 | Mary Justus | 16 | Daughter | — | Wisconsin |
| 75 | Ruth Justus | 14 | Daughter | — | Illinois |
| 76 | Stanley Justus | 12 | Son | — | Illinois |
| 77 | Raymond Justus | 10 | Son | — | Illinois |
| 78 | Antoinette Justus | 8 | Daughter | — | Illinois |
| 79 | Carolyn Justus | 6 | Daughter | — | Illinois |
| 80 | Leola Justus | 3 | Daughter | — | 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)