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Clara Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Iowa
Our Model Tree links this Clara Nelson across the 1920, 1930 and 1940 US Censuses in Cass-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 3-person household.
Age 41
b. ~1899
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Iowa |
| Surname | Nelson |
| Given Name | Clara A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Benton Twp |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Benton Twp |
| Est. Birth Year | ~1899 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clara | Age | Birth yr |
|---|---|---|---|---|
| Clara Nelson | Spouse | — | 41 | ~1899 |
| Andrew Nelson | Head | — | 63 | ~1877 |
| Pauline Nelson | Daughter | — | 18 | ~1922 |
Census Appearances
1920
Cass, Iowa
Spouse, age 21
Cass, Iowa · implied b. ~1899 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cass, Iowa
Spouse, age 32
Cass, Iowa · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 18 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cass-County, Iowa
Spouse, age 41
Cass-County, Iowa · implied b. ~1899 — 3 household members
| Surname | Nelson |
| Given Name | Clara A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Benton Twp |
| 1935 Residence (County) | Cass |
| 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 Clara Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clara Nelson
Spouse · 1940 · age 41 · b. ~1899 · 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 — Cass-County, Iowa
Open full size
1940 US Federal Census — Cass-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01145-00205)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Walker | 7 | Son | — | Iowa |
| 42 | Carol Walker | 5 | Daughter | — | Iowa |
| 43 | Joe Walker | 3 | Son | — | Iowa |
| 44 | Connie Walker | 2 | Daughter | — | Iowa |
| 45 | Schuyler Walker | 52 | Father | Farm Labor | Iowa |
| 46 | Nels C. Nelson | 52 | Head | Farming | Denmark |
| 47 | Katherine Nelson | 54 | Wife | — | Denmark |
| 48 | Morris N. Nelson | 21 | Son | Farm Laborer | Iowa |
| 49 | Folmer Nelson | 18 | Son | — | Iowa |
| 50 | Noma Nelson | 15 | Daughter | — | Iowa |
| 51 | Beaula Nelson | 13 | Daughter | — | Iowa |
| 52 | Virginia Nelson | 11 | Daughter | — | Iowa |
| 53 | Maryann Nelson | 7 | Daughter | — | Iowa |
| 54 | Acheas Melvine Nelson | 4 | Daughter | — | Iowa |
| 55 | Acheas Matte Matte | 26 | Mother-in-law | Private Housekeeper | Iowa |
| 56 | Carl G. Swanson | 76 | Head | — | Sweden |
| 57 | Maud Swanson | 66 | Wife | — | Iowa |
| 58 | Garner E. Swanson | 38 | Son | Farm Laborer | Iowa |
| 59 | J. M. Everett | 84 | Father-in-law | — | Illinois |
| 60 | Alfred Rourick | 51 | Head | Farming | Iowa |
| 61 | Elizabeth Rourick | 51 | Wife | — | Illinois |
| 62 | Iola Rourick | 21 | Son | Hired Farmhand | Iowa |
| 63 | Pearl Rourick | 20 | Daughter | — | Iowa |
| 64 | Mary Rourick | 19 | Daughter | Housekeeper | Iowa |
| 65 | Robert Rourick | 17 | Son | Hired Farmhand | Iowa |
| 66 | Dick Rourick | 16 | Son | Farm Laborer | Iowa |
| 67 | Dorothy Rourick | 15 | Daughter | — | Iowa |
| 68 | Don Rourick | 14 | Son | Farm Laborer | Iowa |
| 69 | Frank Rourick | 13 | Brother | — | Iowa |
| 70 | Bridget M. Rourick | 78 | Mother | — | Iowa |
| 71 | Arthur Boysen | 27 | Head | Farming | Iowa |
| 72 | Evelyne Boysen | 20 | Wife | — | Iowa |
| 73 | Andrew Nelson | 63 | Head | Farming | Denmark |
| 74 | Clara A. Nelson THIS PERSON | 41 | Wife | — | Iowa |
| 75 | Pauline Nelson | 18 | Daughter | — | Iowa |
| 76 | Harley Hoffman | 45 | Head | Farming | Iowa |
| 77 | Anna Hoffman | 43 | Wife | — | Nebraska |
| 78 | Wayne Hoffman | 20 | Son | Farm Laborer | Iowa |
| 79 | Arthur Arthur | 31 | Head | Farming | Iowa |
| 80 | Kleina Arthur | 33 | Wife | — | 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)