MC
Marie Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Linn-County, Iowa
Our Model Tree links this Marie Clark across the 1930 and 1940 US Censuses in Linn-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Linn-County, Iowa |
| Surname | Clark |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Marion |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Marion |
| Est. Birth Year | ~1904 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marie | Age | Birth yr |
|---|---|---|---|---|
| Richard Clark | Son | — | 8 | ~1932 |
| George Clark | Head | — | 42 | ~1898 |
| Wilber Clark | Son | — | 15 | ~1925 |
| Marie Clark | Spouse | — | 36 | ~1904 |
| Robert Clark | Son | — | 8 | ~1932 |
| Larry Clark | Son | — | 5 | ~1935 |
Census Appearances
1930
Linn, Iowa
Head, age 26
Linn, Iowa · implied b. ~1904 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Maria |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 19 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Linn-County, Iowa
Spouse, age 36
Linn-County, Iowa · implied b. ~1904 — 6 household members
| Surname | Clark |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Marion |
| 1935 Residence (County) | Linn |
| Industry | 0 |
| Highest Grade | H-4 |
| 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 Marie Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marie Clark
Spouse · 1940 · age 36 · b. ~1904 · 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 — Linn-County, Iowa
Open full size
1940 US Federal Census — Linn-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01175-00540)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alta Bartlett | 48 | Wife | — | Wisconsin |
| 42 | Charles W Fouck|Fouks | 67 | Head | — | Missouri |
| 43 | Floyd Fouck|Fouks | 28 | Son | Farm Hand | Iowa |
| 44 | Willis Fouck|Fouks | 54 | Brother | Laborer | Missouri |
| 45 | Lucy Burkhart | 46 | Head | Direct Relief | Iowa |
| 46 | Frank Burkhart | 35 | Son | — | Iowa |
| 47 | Clifford Mcdowell | 49 | Head | Quarry | Iowa |
| 48 | Florence Mcdowell | 38 | Wife | — | Iowa |
| 49 | Mary Rose Mcdowell | 15 | Daughter | — | Illinois |
| 50 | Junior Mcdowell | 5 | Son | — | Iowa |
| 51 | Darlene Mcdowell | 2 | Daughter | — | Iowa |
| 52 | Jessie May Lake | 65 | Head | — | Iowa |
| 53 | D. Walter Lake | 64 | Brother | — | Iowa |
| 54 | Glenn F. Lake | 42 | Brother | — | Iowa |
| 55 | George H Clark | 42 | Head | Maintainer | Iowa |
| 56 | Marie Clark THIS PERSON | 36 | Wife | — | Iowa |
| 57 | Wilber Clark | 15 | Son | — | Iowa |
| 58 | Richard Clark | 8 | Son | — | Iowa |
| 59 | Robert Clark | 8 | Son | — | Iowa |
| 60 | Larry Clark | 5 | Son | — | Iowa |
| 61 | Bruno Chelczynski | 60 | Head | Stock Room | Poland |
| 62 | John A Burger | 42 | Head | Hurryman | Iowa |
| 63 | Edith M Burger | 42 | Wife | — | Iowa |
| 64 | David Jackie Burger | 14 | Lodger | — | Iowa |
| 65 | S. D. Cory | 31 | Head | Linotype Operator | Iowa |
| 66 | Mary Cory | 27 | Wife | — | Canada |
| 67 | Neil Hancock | 33 | Head | Radio Technician | Indiana |
| 68 | Chloe Hancock | 34 | Wife | — | Iowa |
| 69 | Marianne Hancock | 1 | Daughter | — | Iowa |
| 70 | S. D. Liebe | 31 | Head | Barber | Iowa |
| 71 | Reba Liebe | 31 | Wife | — | Illinois |
| 72 | William Liebe | 2 | Son | — | Iowa |
| 73 | Robert Liebe | 0 | Son | — | Iowa |
| 74 | F. G. Kempers | 59 | Head | Salesman | Illinois |
| 75 | Stella Kempers | 58 | Wife | — | Illinois |
| 76 | Billie Kempers | 14 | Son | — | Iowa |
| 77 | Dwight S Hastings | 44 | Head | General Contractor | Iowa |
| 78 | Carolyn Hastings | 44 | Wife | — | Iowa |
| 79 | Don Hastings | 12 | Son | — | Iowa |
| 80 | Eugene Hastings | 11 | Son | — | Illinois |
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)