TK
Thomas Kennedy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lake-County, Illinois
Our Model Tree links this Thomas Kennedy across the 1920, 1930 and 1940 US Censuses in Lake-County, Illinois (XGBoost, ~Confirmed), with identified parents Alexander & Alexander — first a son (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Illinois |
| Surname | Kennedy |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Waukegan city |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Industry | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Waukegan City |
| Est. Birth Year | ~1920 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Alexander Kennedy | Head | — | 68 | ~1872 |
| Thomas Kennedy | Son | — | 20 | ~1920 |
| Daniel Kennedy | Son | — | 23 | ~1917 |
| Alex Kennedy | Son | — | 25 | ~1915 |
| Mary Kennedy | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Lake, Illinois
Son, age
Lake, Illinois · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Canada |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Lake, Illinois
Son, age 10
Lake, Illinois · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Canada |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Illinois
Son, age 20
Lake-County, Illinois · implied b. ~1920 — 5 household members
| Surname | Kennedy |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Waukegan city |
| 1935 Residence (County) | Lake |
| Industry | 0 |
| Highest Grade | C 1 |
| 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 Thomas Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alexander Kennedy (~0.92 confidence) and father Alexander Kennedy (~0.92 confidence) and mother Mary Kennedy (~0.92 confidence) and mother Mary Kennedy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alexander Kennedy
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Alexander Kennedy
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Kennedy
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Mary Kennedy
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Kennedy
Son · 1940 · age 20 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
Daniel Kennedy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alex Kennedy
Sibling · 1940 · age 25
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 — Lake-County, Illinois
Open full size
1940 US Federal Census — Lake-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00831-00160)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elsie F. Borkowski | 59 | Wife | — | Illinois |
| 2 | Virginia Borkowski | 22 | Daughter | Tabulating Clerk | Illinois |
| 3 | Earl W. Perry | 57 | Head | Proprietor | Illinois |
| 4 | Helen R. Perry | 49 | Wife | — | Wisconsin |
| 5 | Helen Perry | 18 | Daughter | — | Illinois |
| 6 | Earl W. Jr. Perry | 8 | Son | — | Illinois |
| 7 | Hamilton Huckery | 69 | Head | — | England |
| 8 | Jennie B. Huckery | 67 | Wife | — | Illinois |
| 9 | George Huckery | 29 | Son | Laborer | Illinois |
| 10 | Charles Huckery | 29 | Son | Laborer | Illinois |
| 11 | George W. Klabury | 48 | Head | Mechanic | Illinois |
| 12 | Bernice Klabury | 36 | Wife | — | Illinois |
| 13 | Marion D. Klabury | 17 | Daughter | — | Illinois |
| 14 | Alexander J. G. Dowie | 63 | Lodger | — | Australia |
| 15 | Margaret Lee Edward | 25 | Lodger | Waitress | Georgia |
| 16 | Naomi Moss | 21 | Lodger | Cook | Nebraska |
| 17 | Cyril W. Brady | 41 | Head | Rigger | Illinois |
| 18 | Margaret Brady | 43 | Wife | — | England |
| 19 | Gordon Brady | 17 | Son | New Worker | Illinois |
| 20 | Harry P. Bogan | 33 | Head | Attorney | Russia |
| 21 | Sylvia Bogan | 32 | Wife | — | Illinois |
| 22 | Helen Bogan | 57 | Mother | — | Russia |
| 23 | Edwin Billings | 27 | Head | — | Illinois |
| 24 | Nancy J. Billings | 61 | Wife | — | Illinois |
| 25 | Candelario Espinoza | 37 | Head | Tacker | Mexico |
| 26 | Esther Espinoza | 19 | Wife | — | Mexico |
| 27 | Mary E. Espinoza | 4 | Daughter | — | Illinois |
| 28 | Richard Espinoza | 1 | Son | — | Illinois |
| 29 | Michaelina Espinoza | 1 | Daughter | — | Illinois |
| 30 | John C. Espinoza | 0 | Son | — | Illinois |
| 31 | Clotilde Martinez | 54 | Mother-in-law | — | Mexico |
| 32 | Alexander Kennedy | 68 | Head | Proprietor | Canada |
| 33 | Mary Kennedy | 54 | Wife | — | Illinois |
| 34 | Alex H. Kennedy | 25 | Son | Truck Driver | Illinois |
| 35 | Daniel Kennedy | 23 | Son | Truck Driver | Illinois |
| 36 | Thomas J. Kennedy THIS PERSON | 20 | Son | — | Illinois |
| 37 | Anna M. Brady | 79 | Head | — | Illinois |
| 38 | Lucy M. Brady | 49 | Daughter | Special Clerk | Illinois |
| 39 | Florence A. Brady | 47 | Daughter | Teacher | Illinois |
| 40 | George C. Brady | 43 | Son | Clerk-Office | Illinois |
Pedigree Summary
Thomas + 2 siblings
Gen 1 · 4 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)