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William Kennedy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this William Kennedy across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: MICHIGAN
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | KENNEDY |
| Given Name | WILLIAM A. |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | MICHIGAN |
| 1935 Residence (City) | DETROIT CITY |
| 1935 Residence (County) | WAYNE |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Kennedy | Daughter | — | 14 | ~1926 |
| Christine Kennedy | Daughter | — | 13 | ~1927 |
| Charlotte Kennedy | Daughter | — | 12 | ~1928 |
| William Kennedy | Head | — | 46 | ~1894 |
| Richard Kennedy | Son | — | 9 | ~1931 |
| James Kennedy | Son | — | 5 | ~1935 |
| Robert Kennedy | Son | — | 7 | ~1933 |
| William Kennedy | Son | — | 11 | ~1929 |
| Petronella Kennedy | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Wayne, Michigan
Son, age 1
Wayne, Michigan · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Son, age 11
Wayne-County, Michigan · implied b. ~1929 — 9 household members
| Surname | KENNEDY |
| Given Name | WILLIAM A. |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | MICHIGAN |
| 1935 Residence (City) | DETROIT CITY |
| 1935 Residence (County) | WAYNE |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 William Kennedy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Kennedy
Son · 1940 · age 11 · b. ~1929 · Michigan
★ You are viewing this record
Sibling
Christine Kennedy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kennedy
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Kennedy
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Kennedy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Kennedy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Kennedy
Sibling · 1940 · age 12
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01885-00452)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Kincaid | 22 | HEAD | Tire Builder | KENTUCKY |
| 2 | June H. Kincaid | 19 | WIFE | — | MICHIGAN |
| 3 | Erik E. Erikson | 35 | HEAD | Caster | SWEDEN |
| 4 | Hilma H. Erikson | 33 | WIFE | — | SWEDEN |
| 5 | Evert K. Erikson | 16 | SON | — | SWEDEN |
| 6 | Theobert W. Hertz | 33 | HEAD | Bus Driver | MICHIGAN |
| 7 | Vivian S. Hertz | 28 | WIFE | — | ILLINOIS |
| 8 | Stephen J. Skonieczny | 35 | HEAD | Auto-Body Assembler | WEST VIRGINIA |
| 9 | Florence Skonieczny | 35 | WIFE | Bookkeeper | OHIO |
| 10 | Stephen Skonieczny | 13 | SON | — | MICHIGAN |
| 11 | Leonard Skonieczny | 10 | SON | — | MICHIGAN |
| 12 | Delphine Skonieczny | 6 | DAUGHTER | — | MICHIGAN |
| 13 | Simon Johnson | 44 | HEAD | Millwright | SWEDEN |
| 14 | Signe Johnson | 44 | WIFE | — | SWEDEN |
| 15 | John Murry | 26 | HEAD | Press Operator | TEXAS |
| 16 | Elizabeth Murry | 22 | WIFE | — | MICHIGAN |
| 17 | Henry A. Karla | 33 | HEAD | Automobile Welding | GERMANY |
| 18 | Mildred F. Karla | 28 | WIFE | — | CANADA ENGLISH |
| 19 | Robert Karla | 1 | SON | — | MICHIGAN |
| 20 | James C. Valkinburg | 52 | HEAD | Automobile Inspector | OHIO |
| 21 | Gertrude Valkinburg | 50 | WIFE | — | OHIO |
| 22 | Clarence M. Miller | 35 | HEAD | Bank Cashier | KENTUCKY |
| 23 | Verena Miller | 32 | WIFE | — | KENTUCKY |
| 24 | Clarence Jr. Miller | 9 | SON | — | KENTUCKY |
| 25 | William Kennedy | 46 | HEAD | Instrument Foreman | MICHIGAN |
| 26 | Petronella Kennedy | 45 | WIFE | — | WISCONSIN |
| 27 | Margaret Kennedy | 14 | DAUGHTER | — | MICHIGAN |
| 28 | Christine Kennedy | 13 | DAUGHTER | — | MICHIGAN |
| 29 | William A. Kennedy THIS PERSON | 11 | SON | — | MICHIGAN |
| 30 | Charlotte Kennedy | 12 | DAUGHTER | — | MICHIGAN |
| 31 | Richard Kennedy | 9 | SON | — | MICHIGAN |
| 32 | Robert Kennedy | 7 | SON | — | MICHIGAN |
| 33 | James Kennedy | 5 | SON | — | MICHIGAN |
| 34 | Gilbert F. Loewen | 35 | HEAD | Advertising Printer | MICHIGAN |
| 35 | Catherine T. Loewen | 32 | WIFE | — | OHIO |
| 36 | Richard Loewen | 10 | SON | — | MICHIGAN |
| 37 | Joann Loewen | 6 | DAUGHTER | — | MICHIGAN |
| 38 | John N. Altwies | 73 | FATHER-IN-LAW | — | OHIO |
| 39 | Victor Pascany | 48 | HEAD | Portrait Photographer | RUMANIA |
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)