RC
Ralph Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ottawa-County, Kansas
Our Model Tree links this Ralph Clark across the 1930 and 1940 US Censuses in Ottawa-County, Kansas (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 10-person household.
Age 39
b. ~1901
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ottawa-County, Kansas |
| Surname | Clark |
| Given Name | Ralph R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Fountain Township |
| 1935 Residence (County) | Ottawa |
| Additional Details | |
| Occupation | laborer |
| Industry | buildings |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 522 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Laborer |
| Township / Ward | Fountain Township |
| Est. Birth Year | ~1901 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Chester Clark | Son | — | 10 | ~1930 |
| William Clark | Son | — | 15 | ~1925 |
| Evelyn Clark | Daughter | — | 18 | ~1922 |
| Connie Clark | Daughter | — | 6 | ~1934 |
| Allen Snapp | Other | — | 22 | ~1918 |
| Ivan Clark | Son | — | 3 | ~1937 |
| Ralph Clark | Head | — | 39 | ~1901 |
| Shirley Clark | Daughter | — | 8 | ~1932 |
| Barbara Clark | Daughter | — | 4 | ~1936 |
| Lota Clark | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Ottawa, Kansas
Head, age 29
Ottawa, Kansas · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 20 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Laborer |
| Industry | Farm Labor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 500 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Ottawa-County, Kansas
Head, age 39
Ottawa-County, Kansas · implied b. ~1901 — 10 household members
| Surname | Clark |
| Given Name | Ralph R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Fountain Township |
| 1935 Residence (County) | Ottawa |
| Occupation | laborer |
| Industry | buildings |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 522 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Ralph Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Ralph Clark
Head · 1940 · age 39 · b. ~1901 · Kansas
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Ottawa-County, Kansas
Open full size
1940 US Federal Census — Ottawa-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01251-00103)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ward R. White | 38 | Head | Farming | Kansas |
| 42 | Fae White | 31 | Wife | — | Kansas |
| 43 | Jean J. White | 11 | Daughter | — | Kansas |
| 44 | Guy J. Jones | 58 | Head | Farming | Kansas |
| 45 | Cecelia M. Jones | 59 | Wife | — | Kansas |
| 46 | Emma Antene | 76 | Mother | — | Pennsylvania |
| 47 | Coleman S. Parsons | 55 | Head | Laborer | Illinois |
| 48 | Emma C. Parsons | 54 | Wife | — | Kansas |
| 49 | Roscoe C. Parsons | 21 | Son | Truck Driver | Kansas |
| 50 | Marilyn J. Wolf | 5 | Granddaughter | — | Montana |
| 51 | Lycurgus Jones | 64 | Head | Farming | Illinois |
| 52 | Florence Jones | 62 | Wife | — | Illinois |
| 53 | Ralph R. Clark THIS PERSON | 39 | Head | Laborer | Kansas |
| 54 | Lota A. Clark | 38 | Wife | — | Kansas |
| 55 | Evelyn M. Clark | 18 | Daughter | Student | Kansas |
| 56 | William M. Clark | 15 | Son | — | Kansas |
| 57 | Chester L. Clark | 10 | Son | — | Kansas |
| 58 | Shirley A. Clark | 8 | Daughter | — | Kansas |
| 59 | Connie L. Clark | 6 | Daughter | — | Kansas |
| 60 | Barbara L. Clark | 4 | Daughter | — | Kansas |
| 61 | Ivan D. Clark | 3 | Son | — | Kansas |
| 62 | Allen D. Snapp | 22 | Lodger | Laborer | Kansas |
| 63 | Charlie A. Brion | 57 | Head | Farming | Kansas |
| 64 | Hattie A. Brion | 55 | Wife | — | Kansas |
| 65 | Cleta V. Brion | 28 | Daughter | Clerk | Kansas |
| 66 | Houk Atchley | 56 | Head | Farming | Tennessee |
| 67 | Cleo E. Atchley | 11 | Son | — | Kansas |
| 68 | Dora J. Atchley | 6 | Daughter | — | Kansas |
| 69 | Ray H. Coatney | 48 | Head | Farming | Kansas |
| 70 | Meda L. Coatney | 47 | Wife | — | Kansas |
| 71 | Ray J. Coatney | 24 | Son | — | Kansas |
| 72 | Harlan H. Coatney | 22 | Son | — | Kansas |
| 73 | Dan Q. Sechrist | 58 | Head | Farming | Kansas |
| 74 | Elsie M. Sechrist | 55 | Wife | — | Kansas |
| 75 | Willard R. Sechrist | 29 | Head | Farming | Kansas |
| 76 | Elva S. Sechrist | 27 | Wife | — | Kansas |
| 77 | Philip R. Sechrist | 2 | Son | — | Kansas |
| 78 | Harvey C. Umbarger | 60 | Head | Farming | Kansas |
| 79 | Virgil Umbarger | 29 | Son | — | Kansas |
| 80 | Ralph Umbarger | 22 | Son | — | Kansas |
Related Census Records
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)