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Betty Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adams-County, Illinois
Our Model Tree links this Betty Nelson across the 1930 and 1940 US Censuses in Adams-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Adams-County, Illinois |
| Surname | Nelson |
| Given Name | Betty J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Quincy City |
| 1935 Residence (County) | Adams |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Quincy City |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Betty Nelson | Daughter | — | 15 | ~1925 |
| Elmer Nelson | Head | — | 45 | ~1895 |
| Norma Nelson | Daughter | — | 10 | ~1930 |
| Thelma Nelson | Daughter | — | 18 | ~1922 |
| Leroy Nelson | Son | — | 23 | ~1917 |
| Pearl Nelson | Spouse | — | 48 | ~1892 |
| Donald Nelson | Son | — | 6 | ~1934 |
Census Appearances
1930
Adams, Illinois
Daughter, age 5
Adams, Illinois · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Betty F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Adams-County, Illinois
Daughter, age 15
Adams-County, Illinois · implied b. ~1925 — 7 household members
| Surname | Nelson |
| Given Name | Betty J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Quincy City |
| 1935 Residence (County) | Adams |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same house |
| 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 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 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Norma Nelson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leroy Nelson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Nelson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Nelson
Sibling · 1940 · age 6
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 — Adams-County, Illinois
Open full size
1940 US Federal Census — Adams-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00757-00495)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leo C. Decker | 29 | Head | Night Watchman | Missouri |
| 42 | Marguerite J. Decker | 28 | Wife | — | Missouri |
| 43 | Donald L. Decker | 6 | Son | — | Missouri |
| 44 | Paul D. Decker | 3 | Son | — | Illinois |
| 45 | Barbara J. Decker | 1 | Daughter | — | Illinois |
| 46 | Roy W. Keepohl | 29 | Head | Dairy Operator | Illinois |
| 47 | Clara L. Keepohl | 27 | Wife | — | Illinois |
| 48 | Georgeann Keepohl | 5 | Daughter | — | Illinois |
| 49 | Milton Keepohl | 3 | Son | — | Illinois |
| 50 | Marlene Keepohl | 3 | Daughter | — | Illinois |
| 51 | Kay Keepohl | 0 | Daughter | — | Illinois |
| 52 | Elmer E. Nelson | 45 | Head | Carpenter | Illinois |
| 53 | Pearl F. Nelson | 48 | Wife | — | Illinois |
| 54 | Leroy E. Nelson | 23 | Son | Service Man | Illinois |
| 55 | Thelma F. Nelson | 18 | Daughter | Domestic | Illinois |
| 56 | Betty J. Nelson THIS PERSON | 15 | Daughter | — | Illinois |
| 57 | Norma J. Nelson | 10 | Daughter | — | Illinois |
| 58 | Donald P. Nelson | 6 | Son | — | Illinois |
| 59 | George C. Keepohl | 53 | Head | Machinist | Illinois |
| 60 | Nora Keepohl | 49 | Wife | — | Missouri |
| 61 | Karl E. Keepohl | 23 | Son | Laborer | Illinois |
| 62 | Woodrow W. Smith | 26 | Head | Mechanic | Illinois |
| 63 | Ruth A. Q. Smith | 18 | Wife | — | Missouri |
| 64 | Fred H. Q. Niekamp | 43 | Head | Laborer | Illinois |
| 65 | Florina C. Niekamp | 35 | Wife | — | Illinois |
| 66 | Gloria F. Niekamp | 16 | Daughter | — | Illinois |
| 67 | Bud F. Niekamp | 15 | Son | — | Illinois |
| 68 | Richard F. Niekamp | 14 | Son | — | Illinois |
| 69 | Carl G. Friedhoff | 32 | Head | Truck Driver | Illinois |
| 70 | Elveria R. Friedhoff | 33 | Wife | — | Illinois |
| 71 | Carlene E. Friedhoff | 10 | Daughter | — | Illinois |
| 72 | Joseph R. Friedhoff | 8 | Son | — | Illinois |
| 73 | Rosalie J. Friedhoff | 7 | Daughter | — | Illinois |
| 74 | William C. Friedhoff | 6 | Son | — | Illinois |
| 75 | Richard C. Friedhoff | 5 | Son | — | Illinois |
| 76 | Donald E. Friedhoff | 2 | Son | — | Illinois |
| 77 | John C. Wooley | 65 | Head | Carpenter | Illinois |
| 78 | Martha F. Q. Wooley | 58 | Wife | — | Illinois |
| 79 | John H. (Ab) Wooley | 31 | Son | Laborer | Illinois |
| 80 | Imogene Wooley | 19 | Daughter | Typist | Illinois |
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)