BN
Betty Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wapello-County, Iowa
Our Model Tree links this Betty Nelson across the 1930 and 1940 US Censuses in Wapello-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 7-person household.
Age 18
b. ~1922
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wapello-County, Iowa |
| Surname | Nelson |
| Given Name | Betty A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Aurora |
| 1935 Residence (County) | Kane |
| Additional Details | |
| Occupation | New worker |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | New Worker |
| Township / Ward | Ottumwa City |
| Est. Birth Year | ~1922 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Helen Nelson | Spouse | — | 40 | ~1900 |
| Andrew Nelson | Son | — | 3 | ~1937 |
| Betty Nelson | Daughter | — | 18 | ~1922 |
| Christine Nelson | Daughter | — | 15 | ~1925 |
| Mary Nelson | Daughter | — | 5 | ~1935 |
| Allen Nelson | Head | — | 40 | ~1900 |
| Joe Nelson | Son | — | 5 | ~1935 |
Census Appearances
1930
Wapello, Iowa
Other, age 7
Wapello, Iowa · implied b. ~1923 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Betty |
| Relationship to Head | Piece |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Wapello-County, Iowa
Daughter, age 18
Wapello-County, Iowa · implied b. ~1922 — 7 household members
| Surname | Nelson |
| Given Name | Betty A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Aurora |
| 1935 Residence (County) | Kane |
| Occupation | New worker |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Illinois |
| 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 Betty Nelson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Nelson
Daughter · 1940 · age 18 · b. ~1922 · Iowa
★ You are viewing this record
Sibling
Christine Nelson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Nelson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Nelson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Nelson
Sibling · 1940 · age 3
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 — Wapello-County, Iowa
Open full size
1940 US Federal Census — Wapello-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01209-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur J Shondel | 40 | Head | Recreation Leader | Iowa |
| 2 | Sarah J Shondel | 28 | Wife | Housewife | Iowa |
| 3 | Bernice V Shondel | 14 | Daughter | New Worker | Iowa |
| 4 | Clarence E Shondel | 13 | Son | — | Iowa |
| 5 | Herbert B Shondel | 3 | Son | — | Iowa |
| 6 | Carl E Elliott | 36 | Head | Horseman | Iowa |
| 7 | Esther L Elliott | 33 | Wife | Checkers Dipper | Iowa |
| 8 | Green T Hare | 33 | Head | Service Dept | Iowa |
| 9 | Opal M Hare | 32 | Wife | Saleslady | Iowa |
| 10 | Mary Hazard | 77 | Mother-in-law | Housewife | Iowa |
| 11 | Mary S Blund | 79 | Mother | Housewife | Iowa |
| 12 | C Crenshaw | 57 | Head | — | Iowa |
| 13 | John H Eaton | 23 | Head | Trucker | Iowa |
| 14 | Helen N Eaton | 17 | Wife | Housewife | Iowa |
| 15 | Allen N O Nelson | 40 | Head | Machinist | Minnesota |
| 16 | Helen E Nelson | 40 | Wife | Housewife | Iowa |
| 17 | Betty A Nelson THIS PERSON | 18 | Daughter | New Worker | Iowa |
| 18 | Christine E Nelson | 15 | Daughter | New Worker | Iowa |
| 19 | Mary T Nelson | 5 | Daughter | — | Illinois |
| 20 | Joe J Nelson | 5 | Son | — | Illinois |
| 21 | Andrew E Nelson | 3 | Son | — | Illinois |
| 22 | Lawrence A Mcmullen | 40 | Head | Grave Digger | Iowa |
| 23 | Pearl G Mcmullen | 39 | Wife | Housewife | Iowa |
| 24 | Vernon C O Lawson | 52 | Head | Frontier Fireman | Iowa |
| 25 | Letha M Lawson | 48 | Wife | Housewife | Iowa |
| 26 | Frank J O Reed | 72 | Head | Traveling Salesman | Iowa |
| 27 | Armeda A Reed | 65 | Wife | Housewife | Iowa |
| 28 | Herman E Ruper | 34 | Head | Stockman | Iowa |
| 29 | Cynthia E Ruper | 26 | Wife | Housewife | Iowa |
| 30 | John Heller | 59 | Head | Switchman | Iowa |
| 31 | Elizabeth E O Heller | 59 | Wife | Housewife | Iowa |
| 32 | Milford L O Fromm | 48 | Head | Dispatcher | Iowa |
| 33 | Mary L Fromm | 40 | Wife | Housewife | Missouri |
| 34 | Florence K Belvel | 41 | Head | Cook | Iowa |
| 35 | Rosemary Belvel | 18 | Daughter | Waitress | Iowa |
| 36 | Jerry L Thomas | 5 | Son | — | Iowa |
| 37 | Oscar Mccormick | 31 | Roomer | Truck Driver | Iowa |
| 38 | William E Leonard | 37 | Head | Farmer | Arkansas |
| 39 | Elizabeth M Leonard | 16 | Wife | Housewife | Iowa |
| 40 | Edward E Leonard | 1 | Son | — | 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)