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Gertrude Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Audubon-County, Iowa
Our Model Tree links this Gertrude Nelson across the 1920, 1930 and 1940 US Censuses in Audubon-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 2-person household.
Age 69
b. ~1871
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Audubon-County, Iowa |
| Surname | Nelson |
| Given Name | Gertrude |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Audubon City |
| 1935 Residence (County) | Audubon |
| Additional Details | |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Librarian |
| Township / Ward | Audubon City |
| Est. Birth Year | ~1871 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Eugenie Nelson | Daughter | — | 42 | ~1898 |
| Gertrude Nelson | Head | — | 69 | ~1871 |
Census Appearances
1920
Audubon, Iowa
Head, age 47
Audubon, Iowa · implied b. ~1873 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Gertrude |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Illinois |
| Occupation | Librarian |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Audubon, Iowa
Head, age 59
Audubon, Iowa · implied b. ~1871 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Gertrude |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Audubon-County, Iowa
Head, age 69
Audubon-County, Iowa · implied b. ~1871 — 2 household members
| Surname | Nelson |
| Given Name | Gertrude |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Audubon City |
| 1935 Residence (County) | Audubon |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Gertrude 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
Gertrude Nelson
Head · 1940 · age 69 · b. ~1871 · 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 — Audubon-County, Iowa
Open full size
1940 US Federal Census — Audubon-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01137-00894)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lena Verex | 65 | Head | — | Illinois |
| 42 | Henry Verex | 20 | Son | — | Iowa |
| 43 | Lorraine Bylund | 20 | Roomer | Waitress | Iowa |
| 44 | Eugene Chouse | 26 | Head | Attendant | Iowa |
| 45 | Elinor Chouse | 24 | Wife | — | Iowa |
| 46 | Charlotte Chouse | 2 | Daughter | — | Iowa |
| 47 | Lester Conklin | 27 | Head | Attendant | Iowa |
| 48 | Jean Conklin | 21 | Wife | — | Iowa |
| 49 | John R. Reinhold | 49 | Head | Manager Proprietor | Iowa |
| 50 | Loretta Reinhold | 44 | Wife | — | Iowa |
| 51 | John Reinhold | 14 | Son | — | Iowa |
| 52 | Lillian Schmitz | 22 | Lodger | Beautician | Iowa |
| 53 | Lillian Stanton | 28 | Head | Director | Iowa |
| 54 | Harry Northup | 64 | Head | Postmaster | Iowa |
| 55 | Cora Northup | 62 | Wife | — | Iowa |
| 56 | Edward S. Grinch | 29 | Head | Land Supervisor | Illinois |
| 57 | Hazel Grinch | 50 | Wife | — | Illinois |
| 58 | Axel Jensen | 37 | Head | Manager Proprietor | Iowa |
| 59 | Berniece Jensen | 37 | Wife | — | Iowa |
| 60 | Dick L. Jensen | 9 | Son | — | Iowa |
| 61 | Don A. Jensen | 4 | Son | — | Iowa |
| 62 | Geraldine Masterson | 15 | Niece | — | Iowa |
| 63 | Emma C. Dickinson | 62 | Head | — | Nebraska |
| 64 | Jean Dickinson | 22 | Daughter | — | Canada |
| 65 | Jane R. Culver | 69 | Sister | — | New York |
| 66 | Ella Farquhar | 83 | Head | — | Iowa |
| 67 | Mary Farquhar | 74 | Sister | — | Ohio |
| 68 | Isabell Anderson | 37 | Head | — | Iowa |
| 69 | Shirley Anderson | 10 | Daughter | — | Iowa |
| 70 | Richard Anderson | 4 | Son | — | Iowa |
| 71 | Albert Somers | 33 | Brother | — | Iowa |
| 72 | Clyde J. Dimick | 49 | Head | County Auditor | Iowa |
| 73 | Pearl Dimick | 50 | Wife | — | Iowa |
| 74 | Doris G. Dimick | 17 | Daughter | — | Iowa |
| 75 | James Andrews | 64 | Head | Farmer | Iceland |
| 76 | Allie M. Andrews | 63 | Wife | — | Illinois |
| 77 | Eugene Andrews | 12 | Grandson | — | Iowa |
| 78 | Mary Hollister | 20 | Granddaughter | Housekeeper | Germany |
| 79 | Gertrude Nelson THIS PERSON | 69 | Head | Librarian | Illinois |
| 80 | Eugenie Nelson | 42 | Daughter | — | Iowa |
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)