DN
Dorothy Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Iowa
Our Model Tree links this Dorothy Nelson across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Iowa (XGBoost, ~Confirmed), with identified parents Lee & Carl — first a daughter (b.~1920), then head of a 3-person household.
Age 20
b. ~1920
Female
Daughter
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Iowa |
| Surname | Nelson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Fairfield City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Fairfield City |
| Est. Birth Year | ~1920 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Nelson | Daughter | — | 20 | ~1920 |
| George Smith | Head | — | 47 | ~1893 |
| Allo Nelson | Other | — | 25 | ~1915 |
Census Appearances
1920
Jefferson, Iowa
Daughter, age 2
Jefferson, Iowa · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Jefferson, Iowa
Daughter, age 12
Jefferson, Iowa · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Dorothy M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jefferson-County, Iowa
Daughter, age 20
Jefferson-County, Iowa · implied b. ~1920 — 3 household members
| Surname | Nelson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Fairfield City |
| 1935 Residence (County) | Jefferson |
| Highest Grade | Hs 1 |
| 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 Dorothy Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lee Nelson (~0.92 confidence) and father Carl Nelson (~0.92 confidence) and father George Smith (~0.92 confidence) and mother Lydia Nelson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lee Nelson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Carl Nelson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
George Smith
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Lydia Nelson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Nelson
Daughter · 1940 · age 20 · b. ~1920 · 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 — Jefferson-County, Iowa
Open full size
1940 US Federal Census — Jefferson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01170-00179)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Craig C. Winters | 34 | Brother-in-law | Yardman | Iowa |
| 2 | Rosek Miller | 26 | Head | Proprietor | Iowa |
| 3 | Roberta Miller | 25 | Wife | Assistant | Iowa |
| 4 | Patricia Miller | 4 | Daughter | — | Iowa |
| 5 | Wayne Green | 82 | Lodger | — | Iowa |
| 6 | Elizabeth Entson | 48 | Lodger | Second Cook | Kansas |
| 7 | Archie L. Newhart | 47 | Head | Line Stock Dealer | Iowa |
| 8 | Marie E. Newhart | 43 | Wife | Housekeeper | Iowa |
| 9 | Frances Newhart | 25 | Daughter | — | Nebraska |
| 10 | Mary Lee Newhart | 20 | Daughter | Saleslady | Iowa |
| 11 | Claire Muscarver | 81 | Lodger | — | Ohio |
| 12 | Martha Goltry | 24 | Lodger | Beautician | Iowa |
| 13 | Merle Hagans | 30 | Lodger | Linesman | Iowa |
| 14 | Ray Boley | 52 | Head | Laborer | Iowa |
| 15 | Cekile Boley | 45 | Wife | — | Iowa |
| 16 | Chester Boley | 25 | Son | Grinder | Iowa |
| 17 | Merle Boley | 15 | Son | — | Iowa |
| 18 | Ray E. Mulkins | 55 | Head | Shipping Clerk | Iowa |
| 19 | Marie Mulkins | 55 | Wife | — | Iowa |
| 20 | George F. Smith | 47 | Head | Moulder | Iowa |
| 21 | Allo Nelson | 25 | Son-in-law | Moulder | Iowa |
| 22 | Dorothy Nelson THIS PERSON | 20 | Daughter | — | Iowa |
| 23 | Elma Seklarbaum | 73 | Head | — | Iowa |
| 24 | Bert Pixley | 61 | Head | Laborer | Iowa |
| 25 | Cora Pixley | 53 | Wife | Houseworker | Iowa |
| 26 | Robert F. Pixley | 29 | Head | Baker | Iowa |
| 27 | Lucille Pixley | 26 | Wife | — | Iowa |
| 28 | Robert F. Jr. Pixley | 2 | Son | — | Iowa |
| 29 | Everett Smithburg | 23 | Head | Mechanic | Canada |
| 30 | Jeanette Smithburg | 25 | Wife | — | Iowa |
| 31 | Joanne Smithburg | 2 | Daughter | — | Iowa |
| 32 | Grace Surtzer | 47 | Head | Assistant Cook | Iowa |
| 33 | Frances Surtzer | 25 | Daughter | Houseworker | Iowa |
| 34 | John Jr. Carlson | 16 | Son | — | Iowa |
| 35 | Leclil Newlon | 55 | Head | — | Iowa |
| 36 | Clara Newlon | 52 | Wife | — | Kentucky |
| 37 | Eunice Williamson | 29 | Head | Beautician | Iowa |
| 38 | James Williamson | 21 | Brother | Waiter | Iowa |
| 39 | John Peek | 28 | Lodger | Electric Welder | Iowa |
| 40 | Warren Peek | 21 | Lodger | Electric Welder | Iowa |
Pedigree Summary
Dorothy
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)