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William Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fond-Du-Lac-County, Wisconsin
Our Model Tree links this William Olson across the 1930 and 1940 US Censuses in Fond-Du-Lac-County, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fond-Du-Lac-County, Wisconsin |
| Surname | Olson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | North Fond du Lac Village |
| 1935 Residence (County) | Fond du Lac |
| Additional Details | |
| Industry | Publicity School |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | North Fond Du Lac Village |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Olson | Son | — | 17 | ~1923 |
| Walter Olson | Son | — | 11 | ~1929 |
| Jeanette Olson | Daughter | — | 3 | ~1937 |
| Esther Olson | Spouse | — | 47 | ~1893 |
| Howard Olson | Head | — | 48 | ~1892 |
| Chester Olson | Son | — | 20 | ~1920 |
| Marion Olson | Daughter | — | 24 | ~1916 |
| Howard Olson | Son | — | 9 | ~1931 |
Census Appearances
1930
Fond Du …
Son, age 7
Fond Du Lac, Wisconsin · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Fond-Du-Lac-County, Wisconsin
Son, age 17
Fond-Du-Lac-County, Wisconsin · implied b. ~1923 — 8 household members
| Surname | Olson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | North Fond du Lac Village |
| 1935 Residence (County) | Fond du Lac |
| Industry | Publicity School |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 William Olson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Olson
Son · 1940 · age 17 · b. ~1923 · Wisconsin
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Sibling
Howard Olson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Olson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Olson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chester Olson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeanette Olson
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 — Fond-Du-Lac-County, Wisconsin
Open full size
1940 US Federal Census — Fond-Du-Lac-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04480-00213)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joan Loehr | 9 | Daughter | — | Wisconsin |
| 42 | Emily Crisp | 46 | Sister-in-law | — | Wisconsin |
| 43 | H. D. Wandlinghoff | 52 | Head | Retired | Wisconsin |
| 44 | Ida A. Wandlinghoff | 52 | Wife | — | Wisconsin |
| 45 | John H. Wandlinghoff | 22 | Son | 36 | Wisconsin |
| 46 | Hazel Johnson | 25 | Daughter | — | Wisconsin |
| 47 | John Haider | 4 | Grandson | — | Wisconsin |
| 48 | J. Hattel | 28 | Son-in-law | — | Wisconsin |
| 49 | Howard Olson | 48 | Head | 0 | Wisconsin |
| 50 | Esther Olson | 47 | Wife | — | Wisconsin |
| 51 | Marion Olson | 24 | Daughter | 10 | Wisconsin |
| 52 | Chester Olson | 20 | Son | 6 | Wisconsin |
| 53 | William Olson THIS PERSON | 17 | Son | — | Wisconsin |
| 54 | Walter Olson | 11 | Son | — | Wisconsin |
| 55 | Howard Jr. Olson | 9 | Son | — | Wisconsin |
| 56 | Jeanette Olson | 3 | Daughter | — | Wisconsin |
| 57 | Roy M. Porter | 56 | Head | 0 | Wisconsin |
| 58 | Nettie Porter | 52 | Wife | — | Wisconsin |
| 59 | Adam Jelinski | 63 | Head | 0 | Wisconsin |
| 60 | Martha Jelinski | 63 | Wife | — | Wisconsin |
| 61 | Emma Reinike | 64 | Head | — | Wisconsin |
| 62 | Guido Hanisch | 55 | Head | 0 | Germany |
| 63 | Stella Hanisch | 58 | Wife | — | Wisconsin |
| 64 | Alvin Hanisch | 25 | Son | 27 | Wisconsin |
| 65 | Ethel Hanisch | 21 | Daughter | 28 | Wisconsin |
| 66 | Edward Roethke | 57 | Head | 0 | Wisconsin |
| 67 | Dorothea Roethke | 55 | Wife | — | Wisconsin |
| 68 | Ernest Olsen | 50 | Head | 0 | Norway |
| 69 | Hannah Olsen | 49 | Wife | — | Wisconsin |
| 70 | Charlotte Olsen | 18 | Daughter | — | Wisconsin |
| 71 | Cornelius Olsen | 14 | Son | — | Wisconsin |
| 72 | Harlan Olsen | 16 | Son | — | Wisconsin |
| 73 | Frank Rushke | 44 | Head | 2 | Wisconsin |
| 74 | Vera Rushke | 40 | Wife | — | Wisconsin |
| 75 | Dorothy Rushke | 13 | Daughter | — | Wisconsin |
| 76 | Earl Rushke | 11 | Son | — | Wisconsin |
| 77 | Irene Rushke | 9 | Daughter | — | Wisconsin |
| 78 | John Rushke | 7 | Son | — | Wisconsin |
| 79 | Roman Rushke | 3 | Son | — | Wisconsin |
| 80 | Art Krumbein | 32 | Head | 8 | Wisconsin |
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)