JK
John King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Warren-County, Iowa
Our Model Tree links this John King across the 1920, 1930 and 1940 US Censuses in Warren-County, Iowa (XGBoost, ~Confirmed), with identified parents Perry & Ada — first a head (b.~1910), then head of a 8-person household.
Age 30
b. ~1910
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Iowa |
| Surname | King |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Indianola City |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Occupation | Road Work |
| Industry | When will |
| Class of Worker | PW |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Road Work |
| Township / Ward | Indianola City |
| Est. Birth Year | ~1910 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Marilyn King | Daughter | — | 5 | ~1935 |
| Carolyn King | Daughter | — | 3 | ~1937 |
| Janet King | Daughter | — | ~1940 | |
| Eva King | Daughter | — | 7 | ~1933 |
| John King | Head | — | 30 | ~1910 |
| James King | Son | — | 10 | ~1930 |
| Ralph King | Son | — | 1 | ~1939 |
| Carol King | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Warren, Iowa
Son, age 10
Warren, Iowa · implied b. ~1910 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Warren, Iowa
Son, age 21
Warren, Iowa · implied b. ~1909 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Warren-County, Iowa
Head, age 30
Warren-County, Iowa · implied b. ~1910 — 8 household members
| Surname | King |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Indianola City |
| 1935 Residence (County) | Warren |
| Occupation | Road Work |
| Industry | When will |
| Class of Worker | PW |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 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 John King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Perry King (~0.92 confidence) and mother Ada King (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Perry King
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Ada King
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John King
Head · 1940 · age 30 · b. ~1910 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Warren-County, Iowa
Open full size
1940 US Federal Census — Warren-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01210-00447)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hollis Haworth | 9 | Son | — | Iowa |
| 42 | A. M. Williams | 50 | Head | Teacher In Public Schools | Iowa |
| 43 | Mae Williams | 43 | Wife | Clerk Part-Time In Grocery | Iowa |
| 44 | Lloyd E. Williams | 21 | Son | — | Iowa |
| 45 | Nelson Mcvay | 78 | Head | — | Iowa |
| 46 | Melissa Mcvay | 70 | Wife | — | Iowa |
| 47 | Peter Van Wie | 30 | Head | Barber | Iowa |
| 48 | Darna Van Wie | 26 | Wife | Owner Of Beauty Shop | Iowa |
| 49 | Eugene Van Wie | 4 | Son | — | Iowa |
| 50 | Ella Mecklin | 82 | Head | — | Ohio |
| 51 | Frank Ford | 38 | Son-in-law | Operator Of Meat Department | Iowa |
| 52 | Pauline Ford | 37 | Daughter | — | Iowa |
| 53 | Kathleen Ford | 17 | Granddaughter | — | Iowa |
| 54 | Betty Ann Ford | 14 | Granddaughter | — | Iowa |
| 55 | Frank Edsel Ford | 13 | Grandson | — | Iowa |
| 56 | James Robert Ford | 8 | Grandson | — | Iowa |
| 57 | Martin Mcnamara | 65 | Head | Laborer - Farm Hand | Iowa |
| 58 | Agnes Mcnamara | 60 | Wife | — | Iowa |
| 59 | Alice Mcnamara | 36 | Daughter | — | Iowa |
| 60 | Leonard Mcnamara | 26 | Son | Part Time Worker On Pavement | Iowa |
| 61 | J. Frank Mcnamara | 67 | Brother | — | Iowa |
| 62 | Mabel Stockton | 44 | Head | — | Iowa |
| 63 | Clarice Stockton | 16 | Daughter | — | Iowa |
| 64 | Charles Stockton | 15 | Son | — | Iowa |
| 65 | Grace E. Beck | 33 | Head | Seamstress In W.P.A. Work Room | Iowa |
| 66 | Marlene Beck | 9 | Daughter | — | Iowa |
| 67 | Donald Ivan Beck | 8 | Son | — | Iowa |
| 68 | Ladonna Beck | 6 | Daughter | — | Iowa |
| 69 | John H. King THIS PERSON | 30 | Head | Road Work | Iowa |
| 70 | Carol Lucile King | 27 | Wife | — | Missouri |
| 71 | James King | 10 | Son | — | Iowa |
| 72 | Eva King | 7 | Daughter | — | Iowa |
| 73 | Marilyn King | 5 | Daughter | — | Iowa |
| 74 | Carolyn King | 3 | Daughter | — | Iowa |
| 75 | Ralph King | 1 | Son | — | Iowa |
| 76 | Janet Louise King | 0 | Daughter | — | Iowa |
| 77 | Anne Q. Wright | 48 | Head | Seamstress In W.P.A. Work Room | Missouri |
| 78 | Rooney Opal Wright | 18 | Daughter | Housework | Iowa |
| 79 | Wayne Rich Wright | 13 | Son | — | Iowa |
| 80 | Jeanne Wright | 12 | Daughter | — | Iowa |
Pedigree Summary
John
Gen 1 · 2 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)