JK
John Kennedy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sumner-County, Kansas
Our Model Tree links this John Kennedy across the 1920, 1930 and 1940 US Censuses in Sumner-County, Kansas (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Son
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumner-County, Kansas |
| Surname | Kennedy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Downs Twp |
| 1935 Residence (County) | Sumner |
| Additional Details | |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Downs Twp |
| Est. Birth Year | ~1908 |
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 |
|---|---|---|---|---|
| John Kennedy | Head | — | 69 | ~1871 |
| John Kennedy | Son | — | 32 | ~1908 |
| James Kennedy | Son | — | 36 | ~1904 |
| Mary Kennedy | Spouse | — | 65 | ~1875 |
Census Appearances
1920
Sumner, Kansas
Son, age 12
Sumner, Kansas · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
Sumner, Kansas
Son, age 22
Sumner, Kansas · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Sumner-County, Kansas
Son, age 32
Sumner-County, Kansas · implied b. ~1908 — 4 household members
| Surname | Kennedy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Downs Twp |
| 1935 Residence (County) | Sumner |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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. Identified parents: father John Kennedy (~0.92 confidence) and father John Kennedy (~0.92 confidence) and father John Kennedy (~0.92 confidence) and mother Mary Kennedy (~0.92 confidence) and mother Mary Kennedy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kennedy
b. ~1871
Source father
● Household
· direct · ~0.92
Father
John Kennedy
b. ~1871
Source father
● Household
· direct · ~0.92
Father
John Kennedy
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Mary Kennedy
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Kennedy
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Kennedy
Son · 1940 · age 32 · b. ~1908 · Kansas
★ You are viewing this record
Sibling
James Kennedy
Sibling · 1940 · age 36
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 — Sumner-County, Kansas
Open full size
1940 US Federal Census — Sumner-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01263-00384)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ernest J. Evans | 26 | Son | Farmer | England |
| 42 | Charles D. Lamison | 41 | Head | Farmer | Oklahoma |
| 43 | Inez Lamison | 35 | Wife | — | Kansas |
| 44 | Donna Jo Lamison | 5 | Daughter | — | Kansas |
| 45 | Earl C. Lamison | 35 | Brother | Combination Cook | Oklahoma |
| 46 | John Kennedy | 69 | Head | Farmer | New York |
| 47 | Mary Kennedy | 65 | Wife | — | New York |
| 48 | James Kennedy | 36 | Son | Truck Driver | New York |
| 49 | John Kennedy THIS PERSON | 32 | Son | — | Oklahoma |
| 50 | Albert O. Johnson | 51 | Head | Farmer | Kansas |
| 51 | Stella E. Johnson | 49 | Wife | — | Kansas |
| 52 | Eldon A. Johnson | 21 | Son | Farm Laborer | Kansas |
| 53 | Raymond W. Johnson | 18 | Son | Farm Laborer | Kansas |
| 54 | Wilbert J. Johnson | 15 | Son | Farm Laborer | Kansas |
| 55 | Clarence H. Wagner | 51 | Head | Farm Laborer | Kansas |
| 56 | Maggie E. Wagner | 44 | Wife | — | Kansas |
| 57 | Norma M. Wagner | 14 | Daughter | — | Kansas |
| 58 | Harlan E. Thomas | 24 | Head | Farmer | Kansas |
| 59 | Pauline F. Thomas | 22 | Wife | — | Kansas |
| 60 | Carolyn L. Thomas | 1 | Daughter | — | Kansas |
| 61 | David R. Skaggs | 63 | Head | Farmer | Kentucky |
| 62 | Maude A. Skaggs | 54 | Wife | — | Nebraska |
| 63 | Charles F. Stover | 67 | Head | Farmer | Pennsylvania |
| 64 | Martha E. Stover | 65 | Wife | — | Kansas |
| 65 | Forrest E. Stover | 37 | Son | Farmer | Kansas |
| 66 | Lucy E. Thompson | 94 | Mother in law | — | Indiana |
| 67 | Alvan A. Yurklick | 47 | Head | Farmer | Kansas |
| 68 | Ida M. Yurklick | 46 | Wife | — | Kansas |
| 69 | John H. Yurklick | 86 | Father | — | Pennsylvania |
| 70 | Lawrence W. Schmidt | 27 | Head | Farmer | Kansas |
| 71 | Anna E. Schmidt | 24 | Wife | — | Kansas |
| 72 | Clarence E. Schmidt | 3 | Son | — | Kansas |
| 73 | Robert L. Schmidt | 2 | Son | — | Kansas |
| 74 | Chester I. Spangler | 56 | Head | Farmer | Iowa |
| 75 | Ella L. Spangler | 53 | Wife | — | Kansas |
| 76 | Ralph D. Spangler | 28 | Son | Farmer | Kansas |
| 77 | Florence B. Spangler | 26 | Daughter | Teacher | Kansas |
| 78 | Delbert G. Spangler | 24 | Son | Farmer | Kansas |
| 79 | Louise L. Spangler | 21 | Daughter | — | Kansas |
| 80 | Allen T. Spangler | 18 | Son | — | Kansas |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 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)