DC
Doris Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Iowa
Our Model Tree links this Doris Clark across the 1930 and 1940 US Censuses in Marion-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 10-person household.
Age 40
b. ~1900
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Iowa |
| Surname | Clark |
| Given Name | Doris |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Hamilton Town |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Hamilton Town |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Doris | Age | Birth yr |
|---|---|---|---|---|
| Irma Clark | Daughter | — | 9 | ~1931 |
| Richard Clark | Son | — | 16 | ~1924 |
| Thomas Clark | Son | — | 1 | ~1939 |
| Junior Clark | Son | — | 14 | ~1926 |
| Doris Clark | Spouse | — | 40 | ~1900 |
| Robert Clark | Son | — | 6 | ~1934 |
| George Clark | Head | — | 50 | ~1890 |
| Beulah Clark | Daughter | — | 11 | ~1929 |
| Eugene Clark | Son | — | 5 | ~1935 |
| Shirley Clark | Daughter | — | 3 | ~1937 |
Census Appearances
1930
Marion, Iowa
Other, age 30
Marion, Iowa · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Doris M. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 19 |
| 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
Spouse, age 40
Marion-County, Iowa · implied b. ~1900 — 10 household members
| Surname | Clark |
| Given Name | Doris |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Hamilton Town |
| 1935 Residence (County) | Marion |
| Highest Grade | No 6 |
| 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 Doris Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Doris Clark
Spouse · 1940 · age 40 · b. ~1900 · Iowa
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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 — Marion-County, Iowa
Open full size
1940 US Federal Census — Marion-County, Iowa
Page Contents
11 people indexed on this census page (nara:1940:m-t0627-01181-00612)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Gray | 66 | Lodger | Xoxo | Pennsylvania |
| 42 | George Clark | 50 | Head | Mining | Iowa |
| 43 | Doris Clark THIS PERSON | 40 | Wife | — | Iowa |
| 44 | Richard Clark | 16 | Son | — | Iowa |
| 45 | Junior Clark | 14 | Son | — | Iowa |
| 46 | Beulah Clark | 11 | Daughter | — | Iowa |
| 47 | Irma Clark | 9 | Daughter | — | Iowa |
| 48 | Robert Clark | 6 | Son | — | Iowa |
| 49 | Eugene Clark | 5 | Son | — | Iowa |
| 50 | Shirley Clark | 3 | Daughter | — | Iowa |
| 51 | Thomas Clark | 1 | Son | — | 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)