AC
Ada Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clark-County, Ohio
Our Model Tree links this Ada Clark across the 1930 and 1940 US Censuses in Clark-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 7-person household.
Age 40
b. ~1900
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Ohio |
| Surname | Clark |
| Given Name | Ada L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Springfield |
| Est. Birth Year | ~1900 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ada | Age | Birth yr |
|---|---|---|---|---|
| John Clark | Son | — | 11 | ~1929 |
| Joan Hixon | Other | — | 11 | ~1929 |
| John Clark | Head | — | 47 | ~1893 |
| George Clark | Son | — | 19 | ~1921 |
| Richard Clark | Son | — | 3 | ~1937 |
| Ada Clark | Spouse | — | 40 | ~1900 |
| Betty Clark | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Clark, Ohio
Other, age 30
Clark, Ohio · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ada L. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 16 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Clark-County, Ohio
Spouse, age 40
Clark-County, Ohio · implied b. ~1900 — 7 household members
| Surname | Clark |
| Given Name | Ada L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Ada Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ada Clark
Spouse · 1940 · age 40 · b. ~1900 · Ohio
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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 — Clark-County, Ohio
Open full size
1940 US Federal Census — Clark-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03039-00676)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Esther George | 39 | Wife | — | Kentucky |
| 2 | Frank George | 23 | Son | Nurseryman | Kentucky |
| 3 | Emogene George | 18 | Daughter | Seamstress | Kentucky |
| 4 | Joan George | 13 | Daughter | — | Ohio |
| 5 | Eugene Chandler | 26 | Lodger | Nurseryman | Ohio |
| 6 | Ida Mcpherson | 66 | Head | Laundress | Ohio |
| 7 | John W. Clark | 47 | Head | Painter | Missouri |
| 8 | Ada L. Clark THIS PERSON | 40 | Wife | — | Ohio |
| 9 | George E. Clark | 19 | Son | Landscape Laborer | Ohio |
| 10 | Betty J. Clark | 14 | Daughter | — | Ohio |
| 11 | John Clark | 11 | Son | — | Ohio |
| 12 | Richard L. Clark | 3 | Son | — | Ohio |
| 13 | Joan Hixon | 11 | Lodger | — | Ohio |
| 14 | Henry Brimmer | 74 | Head | — | Ohio |
| 15 | John H. Kimball | 47 | Head | — | Ohio |
| 16 | Helen Kimball | 37 | Wife | — | Ohio |
| 17 | Mildred L. Kimball | 14 | Daughter | — | Ohio |
| 18 | Betty Kimball | 9 | Daughter | — | Ohio |
| 19 | Mary K. Kimball | 5 | Daughter | — | Ohio |
| 20 | John H. Jr. Kimball | 2 | Son | — | Ohio |
| 21 | Ivy Kirchgassner | 33 | Head | Glazer | Kentucky |
| 22 | Julia Filomenus | 70 | Head | — | Irish Free State |
| 23 | Dianna Donahue | 72 | Sister | — | Irish Free State |
| 25 | Gus Dimitroff | 50 | Head | Bartender | Greece |
| 26 | Pearl Dimitroff | 32 | Wife | — | Greece |
| 27 | Dorothy Dimitroff | 13 | Daughter | — | Pennsylvania |
| 28 | James Dimitroff | 9 | Son | — | West Virginia |
| 29 | George Dimitroff | 5 | Son | — | West Virginia |
| 30 | George Dimitroff | 57 | Brother | Bartender | Greece |
| 31 | George Perenc | 48 | Lodger | Molder | Yugoslavia |
| 32 | Amelia Snyder | 62 | Head | — | Ohio |
| 33 | George F. Snyder | 66 | Husband | Sheet Metal Worker | Ohio |
| 34 | Robert A. Snyder | 24 | Son | Stock Clerk | Ohio |
| 35 | John M. Webb | 62 | Head | Laborer | Kentucky |
| 36 | Sylvia Waugh | 46 | Lodger | — | Ohio |
| 37 | Earl Stiffier | 47 | Head | Laborer | Ohio |
| 38 | Bertha Stiffier | 50 | Wife | — | Ohio |
| 39 | Albert Chandler | 58 | Head | Junk Dealer | Kentucky |
| 40 | Mary E. Chandler | 43 | Wife | — | Kentucky |
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)