DN
David Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this David Nelson across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 3-person household.
Age 50
b. ~1890
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Nelson |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Foreman |
| Industry | Steam railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2600 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Foreman |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1890 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| Hulda Nelson | Daughter | — | 26 | ~1914 |
| David Nelson | Head | — | 50 | ~1890 |
| Anna Nelson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Woodbury, Iowa
Head, age 30
Woodbury, Iowa · implied b. ~1890 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | un |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Car Repairer |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Woodbury, Iowa
Head, age 40
Woodbury, Iowa · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 23 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Car Foreman |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Woodbury-County, Iowa
Head, age 50
Woodbury-County, Iowa · implied b. ~1890 — 3 household members
| Surname | Nelson |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Occupation | Foreman |
| Industry | Steam railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2600 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 David Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
David Nelson
Head · 1940 · age 50 · b. ~1890 · 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 — Woodbury-County, Iowa
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1940 US Federal Census — Woodbury-County, Iowa
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-01215-00101)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Bruline | 55 | Head | Checker | Sweden |
| 42 | Esther Bruline | 52 | Wife | — | Sweden |
| 43 | Margaret Bruline | 12 | Daughter | — | Iowa |
| 45 | David Nelson THIS PERSON | 50 | Head | Foreman | Sweden |
| 46 | Anna Nelson | 49 | Wife | — | Sweden |
| 47 | Hulda Nelson | 26 | Daughter | Clerk | Iowa |
| 49 | Axel Peterson | 50 | Head | Truck Driver | Iowa |
| 50 | Elma Peterson | 37 | Wife | — | Iowa |
| 51 | Constance Peterson | 2 | Daughter | — | Iowa |
| 53 | John E. Donovan | 60 | Head | Switchman | Iowa |
| 54 | Margaret Donovan | 49 | Wife | — | New York |
| 55 | Gertrude Donovan | 29 | Daughter | Clerk | Iowa |
| 56 | Frances Donovan | 24 | Daughter | Laborer | Iowa |
| 57 | Madonna Donovan | 22 | Daughter | Operator | Iowa |
| 59 | James J. Hickey | 74 | Head | — | Massachusetts |
| 60 | Alice J. Hickey | 71 | Wife | — | Wisconsin |
| 62 | Reuben Hadland | 43 | Head | Boilermaker | Iowa |
| 63 | Aletha Hadland | 43 | Wife | Stenographer | Iowa |
| 64 | Jean Hadland | 15 | Daughter | — | Iowa |
| 65 | Caroline Hadland | 14 | Daughter | — | Iowa |
| 66 | William Hadland | 12 | Son | — | Iowa |
| 67 | Andrew Beckman | 47 | Head | Photographer | Sweden |
| 68 | Ella Beckman | 44 | Wife | — | Sweden |
| 69 | Arthur Beckman | 20 | Son | — | Iowa |
| 70 | Shirley Beckman | 13 | Daughter | — | Iowa |
| 71 | George Christiansen | 30 | Head | Salesman | So. Dakota |
| 72 | Bernice Christiansen | 27 | Wife | — | No. Dakota |
| 74 | Ed Wall | 50 | Head | Barber Shop | Iowa |
| 75 | Hazel Wall | 40 | Wife | — | Nebraska |
| 76 | Warren Wall | 16 | Son | — | Iowa |
| 77 | George Wall | 13 | Son | — | Iowa |
| 78 | George Meade | 48 | Head | Machine Foreman | Kansas |
| 79 | May Meade | 52 | Wife | — | Missouri |
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)