RK
Robert Kennedy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Iowa
Our Model Tree links this Robert Kennedy across the 1920, 1930 and 1940 US Censuses in Delaware-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Anna — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Iowa |
| Surname | Kennedy |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Twp |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 866 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Prairie Twp |
| Est. Birth Year | ~1918 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| John Kennedy | Head | — | 55 | ~1885 |
| Everett Kennedy | Son | — | 16 | ~1924 |
| Robert Kennedy | Son | — | 22 | ~1918 |
| Eunice Kennedy | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Delaware, Iowa
Son, age 1
Delaware, Iowa · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Delaware, Iowa
Son, age 12
Delaware, Iowa · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Delaware-County, Iowa
Son, age 22
Delaware-County, Iowa · implied b. ~1918 — 4 household members
| Surname | Kennedy |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Twp |
| 1935 Residence (County) | Delaware |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 866 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Robert 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 mother Anna Kennedy (~0.92 confidence) and father John Kennedy (~0.92 confidence) and mother Eunice Kennedy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kennedy
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Anna Kennedy
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
John Kennedy
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Eunice Kennedy
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Kennedy
Son · 1940 · age 22 · b. ~1918 · Iowa
★ You are viewing this record
Sibling
Everett Kennedy
Sibling · 1940 · age 16
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 — Delaware-County, Iowa
Open full size
1940 US Federal Census — Delaware-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01155-00464)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theodore Hilby | 52 | Head | Farmer | Illinois |
| 2 | Catherine Hilby | 40 | Wife | Homemaker | Illinois |
| 3 | Bertille Hilby | 21 | Daughter | Homemaker | Illinois |
| 4 | Grace Hilby | 18 | Daughter | Homemaker | Iowa |
| 5 | Bernice Hilby | 16 | Daughter | Homemaker | Iowa |
| 6 | Joseph Hilby | 14 | Son | — | Iowa |
| 7 | Robert Hilby | 11 | Son | — | Iowa |
| 8 | Ronald Hilby | 9 | Son | — | Iowa |
| 9 | Kenneth Hilby | 7 | Son | — | Iowa |
| 10 | Iva Hilby | 4 | Daughter | — | Iowa |
| 11 | Donald Hilby | 2 | Son | — | Iowa |
| 12 | Eugene Eling | 29 | Head | Farmer | Iowa |
| 13 | Dorothy Eling | 24 | Wife | Homemaker | Iowa |
| 14 | Janet Eling | 2 | Daughter | — | Iowa |
| 15 | Norma Jean Eling | 0 | Daughter | — | Iowa |
| 16 | John M. Kennedy | 55 | Head | Farmer | Iowa |
| 17 | Eunice Kennedy | 45 | Wife | Homemaker | Iowa |
| 18 | Robert A. Kennedy THIS PERSON | 22 | Son | Farmer | Iowa |
| 19 | Everett Kennedy | 16 | Son | Farmer | Iowa |
| 20 | Paul Klink | 63 | Head | Farmer | Germany |
| 21 | Irine Klink | 31 | Daughter | Homemaker | Illinois |
| 22 | Earl Klink | 33 | Son | Farmer | Illinois |
| 23 | Earl Neal | 38 | Head | Farmer | Iowa |
| 24 | Ruth Neal | 32 | Wife | Homemaker | Iowa |
| 25 | Wesley Neal | 13 | Son | — | Iowa |
| 26 | Earl Jr. Neal | 12 | Son | — | Iowa |
| 27 | Barbara Neal | 10 | Daughter | — | Iowa |
| 28 | Lyle Neal | 8 | Son | — | Iowa |
| 29 | William Reck | 46 | Head | Farmer | Illinois |
| 30 | Hellen Reck | 40 | Wife | Homemaker | Illinois |
| 31 | Howard Reck | 20 | Son | Farmer | Iowa |
| 32 | Richard E. Mcmahon | 50 | Head | Farmer | Iowa |
| 33 | Christine Mcmahon | 47 | Wife | Homemaker | Iowa |
| 34 | Rose Mcmahon | 14 | Daughter | — | Iowa |
| 35 | Joseph Mcmahon | 11 | Son | — | Iowa |
| 36 | Kathleen Mcmahon | 8 | Daughter | — | Iowa |
| 37 | Martin Tubben | 35 | Head | Farmer | Iowa |
| 38 | Vera Tubben | 35 | Wife | Homemaker | Iowa |
| 39 | Vernon Tubben | 12 | Son | — | Iowa |
| 40 | Clair Porter | 36 | Head | Farmer | Iowa |
Pedigree Summary
Robert + 1 sibling
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)