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Donald Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this Donald Nelson across the 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Nelson |
| Given Name | Donald L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1929 |
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 Donald | Age | Birth yr |
|---|---|---|---|---|
| Donald Nelson | Son | — | 11 | ~1929 |
| Gerald Nelson | Son | — | 12 | ~1928 |
| Grace Nelson | Daughter | — | 24 | ~1916 |
| Jean Nelson | Daughter | — | 14 | ~1926 |
| Esther Nelson | Daughter | — | 18 | ~1922 |
| Gertrude Nelson | Spouse | — | 47 | ~1893 |
| Mildred Nelson | Daughter | — | 21 | ~1919 |
| Norman Nelson | Head | — | 48 | ~1892 |
| Dorothy Nelson | Daughter | — | 23 | ~1917 |
| Leonard Nelson | Son | — | 20 | ~1920 |
Census Appearances
1930
Woodbury, Iowa
Son, age 1
Woodbury, Iowa · implied b. ~1929 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Donald S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Woodbury-County, Iowa
Son, age 11
Woodbury-County, Iowa · implied b. ~1929 — 10 household members
| Surname | Nelson |
| Given Name | Donald L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Highest Grade | 5 |
| 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 Donald Nelson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Nelson
Son · 1940 · age 11 · b. ~1929 · Iowa
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Sibling
Gerald Nelson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Nelson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Nelson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Nelson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Nelson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Nelson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Nelson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01214-00894)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wayne Max | 4 | Son | — | Iowa |
| 2 | Angela Max | 3 | Daughter | — | Iowa |
| 3 | Hale Max | 0 | Son | — | Iowa |
| 4 | Glen J. Phillips | 40 | Head | Truck Driver | Minnesota |
| 5 | Mabel L. Phillips | 38 | Wife | — | Minnesota |
| 6 | Wayne G. Phillips | 19 | Son | Grocery Clerk | Nebraska |
| 7 | Burdette L. Phillips | 15 | Son | Farm Helper | Nebraska |
| 8 | Derold D. Phillips | 14 | Son | — | Nebraska |
| 9 | Darlene J. Phillips | 13 | Daughter | — | Nebraska |
| 10 | Norman W. Nelson | 48 | Head | County Treasurer | Iowa |
| 11 | Gertrude Nelson | 47 | Wife | — | Iowa |
| 12 | Grace C. Nelson | 24 | Daughter | Cashier | Iowa |
| 13 | Dorothy Val Nelson | 23 | Daughter | School Teacher | Iowa |
| 14 | Mildred A. Nelson | 21 | Daughter | — | Iowa |
| 15 | Leonard P. Nelson | 20 | Son | — | Iowa |
| 16 | Esther A. Nelson | 18 | Daughter | — | Iowa |
| 17 | Jean F. Nelson | 14 | Daughter | — | Iowa |
| 18 | Gerald G. Nelson | 12 | Son | — | Iowa |
| 19 | Donald L. Nelson THIS PERSON | 11 | Son | — | Iowa |
| 20 | Michael E. Helgen | 41 | Head | Construction | Iowa |
| 21 | Florence O. Helgen | 40 | Wife | — | Iowa |
| 22 | Robert C. Helgen | 21 | Son | Grocery Clerk | Iowa |
| 23 | Kenneth E. Helgen | 16 | Son | — | Iowa |
| 24 | Constance Jane Helgen | 11 | Daughter | — | Iowa |
| 25 | George E. Bolton | 56 | Head | Tender Repairman | Iowa |
| 26 | Esther I. Bolton | 48 | Wife | — | Iowa |
| 27 | Dorothy Bolton | 17 | Daughter | — | Iowa |
| 28 | Edith Bolton | 13 | Daughter | — | Iowa |
| 29 | Hadyn H. Haley | 45 | Head | Agent | Iowa |
| 30 | Marjory L. Haley | 43 | Wife | Christian Science Practitioner | Iowa |
| 31 | Arthur E. Mjoen | 31 | Head | Shoe Maker | Iowa |
| 32 | Pauline H. Mjoen | 30 | Wife | — | Nebraska |
| 33 | John Michael Mjoen | 3 | Son | — | Iowa |
| 34 | Susanne E. Mjoen | 1 | Daughter | — | Iowa |
| 35 | Ruth J. Mjoen | 18 | Sister | — | Iowa |
| 36 | Carl A. Varnes | 48 | Head | Railroad Foreman | South Dakota |
| 37 | Martha B. Varnes | 48 | Wife | — | South Dakota |
| 38 | Shannon M. Varnes | 15 | Daughter | — | Iowa |
| 39 | St. Claire Varnes | 13 | Daughter | — | South Dakota |
| 40 | Kenneth G. Hildebrand | 26 | Head | Manager Clerk | Iowa |
Related Census Records
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)