RK
Richard King — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Iowa
Our Model Tree links this Richard King across the 1930 and 1940 US Censuses in Marion-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 12-person household.
Age 22
b. ~1918
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Iowa |
| Surname | King |
| Given Name | Richard |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Swan City Town |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Swan City Town |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Richard King | Son | — | 22 | ~1918 |
| Bertha King | Daughter | — | 8 | ~1932 |
| Bernice King | Daughter | — | 21 | ~1919 |
| Mamie King | Daughter | — | 9 | ~1931 |
| Ernest King | Head | — | 45 | ~1895 |
| Margret King | Daughter | — | 2 | ~1938 |
| John King | Son | — | 13 | ~1927 |
| Esther King | Daughter | — | 11 | ~1929 |
| Rosa King | Daughter | — | 3 | ~1937 |
| Floyd King | Son | — | 5 | ~1935 |
| Johnathan Mote | Other | — | 77 | ~1863 |
| Marie King | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Marion, Iowa
Son, age 13
Marion, Iowa · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | R. Lee |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marion-County, Iowa
Son, age 22
Marion-County, Iowa · implied b. ~1918 — 12 household members
| Surname | King |
| Given Name | Richard |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Swan City Town |
| 1935 Residence (County) | Marion |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Richard King across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard King
Son · 1940 · age 22 · b. ~1918 · Iowa
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Sibling
Bertha King
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosa King
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice King
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie King
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margret King
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther King
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Floyd King
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie King
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John King
Sibling · 1940 · age 13
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 — Marion-County, Iowa
Open full size
1940 US Federal Census — Marion-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01181-00749)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Louis Porter | 52 | son | Laborer | Kansas |
| 42 | George Porter | 51 | son | — | Kansas |
| 43 | Blair Porter | 17 | grand son | Laborer | Iowa |
| 44 | Mary E. Bly | 67 | head | — | Iowa |
| 45 | Ida B. Walker | 71 | head | — | Iowa |
| 46 | Laura E. Walker | 69 | wife | — | Iowa |
| 47 | Luella Hise | 75 | head | — | Iowa |
| 48 | John A. Bowers | 40 | head | Farmer | Iowa |
| 49 | Bertha I. Bowers | 33 | wife | Housewife | Iowa |
| 50 | Ferne I. Bowers | 16 | daughter | — | Iowa |
| 51 | James H. Ryan | 37 | head | Laborer | Iowa |
| 52 | Inez E. Ryan | 39 | wife | — | Iowa |
| 53 | Eugene Ryan | 14 | son | — | Minnesota |
| 54 | Harry E. Knott | 71 | head | Real Estate | Iowa |
| 55 | Myrtle Knott | 64 | wife | Housewife | Iowa |
| 56 | Fred C. Hackey | 49 | head | Farming | Kansas |
| 57 | Leafy L. Hackey | 43 | wife | Housewife | Illinois |
| 58 | William L. Hutter | 29 | head | Merchant | Iowa |
| 59 | Irene R. Hutter | 27 | wife | — | Iowa |
| 60 | James R. Hutter | 2 | son | — | Iowa |
| 61 | Nora Cook | 56 | head | Laborer | Iowa |
| 62 | Jennie Gordon | 61 | head | — | Holland |
| 63 | Mary E. Oliver | 78 | head | — | Denmark |
| 64 | John Stradly | 64 | head | Laborer | Iowa |
| 65 | Etta V. Stradly | 61 | wife | — | Iowa |
| 66 | Carl J. Stradly | 37 | son | Bus Driver | Iowa |
| 67 | Marietta Cline | 71 | head | — | Ohio |
| 68 | Edward Carr | 50 | head | Painter | Iowa |
| 69 | Ernest King | 45 | head | Coal Mine | Iowa |
| 70 | Richard King THIS PERSON | 22 | son | — | Iowa |
| 71 | Bernice E. King | 21 | daughter | — | Iowa |
| 72 | Marie E. King | 15 | daughter | — | Iowa |
| 73 | John E. King | 13 | son | — | Iowa |
| 74 | Esther King | 11 | daughter | — | Iowa |
| 75 | Mamie L. King | 9 | daughter | — | Iowa |
| 76 | Bertha M. King | 8 | daughter | — | Iowa |
| 77 | Floyd J. King | 5 | son | — | Iowa |
| 78 | Rosa L. King | 3 | daughter | — | Iowa |
| 79 | Margret L. King | 2 | daughter | — | Iowa |
| 80 | Johnathan E. Mote | 77 | lodger | — | Iowa |
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)