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Joseph Kennedy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Buena-Vista-County, Iowa
Our Model Tree links this Joseph Kennedy across the 1930 and 1940 US Censuses in Buena-Vista-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buena-Vista-County, Iowa |
| Surname | Kennedy |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Buena Vista |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Storm Lake |
| Est. Birth Year | ~1924 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Monica Kennedy | Daughter | — | 14 | ~1926 |
| Marie Kennedy | Daughter | — | 23 | ~1917 |
| Dan Kennedy | Head | — | 49 | ~1891 |
| Patrick Kennedy | Son | — | 21 | ~1919 |
| Thomas Kennedy | Son | — | 19 | ~1921 |
| Joseph Kennedy | Son | — | 16 | ~1924 |
| John Kennedy | Son | — | 12 | ~1928 |
| Rose Kennedy | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Buena Vista, …
Son, age 6
Buena Vista, Iowa · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Joseph D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Buena-Vista-County, Iowa
Son, age 16
Buena-Vista-County, Iowa · implied b. ~1924 — 8 household members
| Surname | Kennedy |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Buena Vista |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Joseph Kennedy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Kennedy
Son · 1940 · age 16 · b. ~1924 · Iowa
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Sibling
Marie Kennedy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Kennedy
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kennedy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Kennedy
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Monica Kennedy
Sibling · 1940 · age 14
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 — Buena-Vista-County, Iowa
Open full size
1940 US Federal Census — Buena-Vista-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01143-00445)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patrick Mc Cabe | 59 | Head | Blacksmith | Illinois |
| 2 | Delia Mc Cabe | 59 | Wife | — | Illinois |
| 3 | Patrick Jr Mc Cabe | 27 | Son | Tractor Driver | Illinois |
| 4 | Edward Quigley | 64 | Head | Caretaker | Nebraska |
| 5 | Anna Quigley | 65 | Wife | — | Illinois |
| 6 | Al J Quigley | 36 | Son | Truck Driver | Iowa |
| 7 | Homer Fredrickson | 25 | Head | Truck Driver | Iowa |
| 8 | Josephine Fredrickson | 21 | Wife | — | Iowa |
| 9 | Billy Ann Fredrickson | 1 | Daughter | — | Iowa |
| 10 | Homer L Mathews | 33 | Head | Common Labor | Illinois |
| 11 | Barbara Mathews | 27 | Wife | — | Iowa |
| 12 | Arnold Mathews | 11 | Son | — | Iowa |
| 13 | George Robert Mathews | 9 | Son | — | Iowa |
| 14 | Dan J Kennedy | 49 | Head | Common Labor | Iowa |
| 15 | Rose Kennedy | 46 | Wife | — | Iowa |
| 16 | Marie Kennedy | 23 | Daughter | Common Labor | Iowa |
| 17 | Patrick Kennedy | 21 | Son | Common Labor | Iowa |
| 18 | Thomas Kennedy | 19 | Son | Common Labor | Iowa |
| 19 | Joseph Kennedy THIS PERSON | 16 | Son | — | Iowa |
| 20 | Monica Kennedy | 14 | Daughter | — | Iowa |
| 21 | John Kennedy | 12 | Son | — | Iowa |
| 22 | Glenn Preston | 32 | Head | — | Iowa |
| 23 | Florence Preston | 24 | Wife | — | Iowa |
| 24 | Ronald Preston | 1 | Son | — | Iowa |
| 25 | Addie Van Buskirk | 51 | Head | Housework | Iowa |
| 26 | Albert Van Buskirk | 30 | Son | Common Labor | Iowa |
| 27 | Earl Van Buskirk | 25 | Son | — | Iowa |
| 28 | David D Derp | 48 | Head | Cement Finisher | Iowa |
| 29 | Laura Derp | 40 | Wife | — | Iowa |
| 30 | Everett Derp | 22 | Son | Common Labor | Iowa |
| 31 | Earl Derp | 19 | Son | Common Labor | Iowa |
| 32 | Ivan Derp | 18 | Son | — | Iowa |
| 33 | Richard Derp | 15 | Son | — | Iowa |
| 34 | Melvin Derp | 12 | Son | — | Iowa |
| 35 | Wayne Derp | 7 | Son | — | Iowa |
| 36 | Laurene Derp | 5 | Daughter | — | Iowa |
| 37 | Edgar Derp | 2 | Son | — | Iowa |
| 38 | Margaret Shonts | 56 | Head | — | Iowa |
| 39 | William E Mc Manus | 70 | Head | — | Wisconsin |
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)