AN
Alfred Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Waukesha-County, Wisconsin
Our Model Tree links this Alfred Nelson across the 1920, 1930 and 1940 US Censuses in Waukesha-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Hans & Hans — first a son (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Waukesha-County, Wisconsin |
| Surname | Nelson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Merton township |
| 1935 Residence (County) | Waukesha |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | E |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same house |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Farmer |
| Township / Ward | Merton Township |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alfred | Age | Birth yr |
|---|---|---|---|---|
| Hans Nelson | Head | — | 70 | ~1870 |
| Pauline Nelson | Other | — | 20 | ~1920 |
| Harold Nelson | Son | — | 26 | ~1914 |
| Alfred Nelson | Son | — | 31 | ~1909 |
Census Appearances
1920
Waukesha, Wisconsin
Son, age 10
Waukesha, Wisconsin · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Alfred M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Waukesha, Wisconsin
Son, age 21
Waukesha, Wisconsin · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Laborer |
| Industry | General farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Waukesha-County, Wisconsin
Son, age 31
Waukesha-County, Wisconsin · implied b. ~1909 — 4 household members
| Surname | Nelson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Merton township |
| 1935 Residence (County) | Waukesha |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | E |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 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 Alfred Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Hans Nelson (~0.92 confidence) and father Hans Nelson (~0.92 confidence) and father Nels Nelson (~0.92 confidence) and mother Doris Nelson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hans Nelson
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Hans Nelson
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Nels Nelson
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Doris Nelson
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alfred Nelson
Son · 1940 · age 31 · b. ~1909 · Wisconsin
★ You are viewing this record
Sibling
Harold Nelson
Sibling · 1940 · age 26
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 — Waukesha-County, Wisconsin
Open full size
1940 US Federal Census — Waukesha-County, Wisconsin
Page Contents
13 people indexed on this census page (nara:1940:m-t0627-04533-00519)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mad Sullivan | 21 | Lodger | Laborer | Wisconsin |
| 2 | Minnie Keefe | 60 | Head | — | Wisconsin |
| 3 | Henry J. Otter | 58 | Head | — | Wisconsin |
| 4 | Josephine Otter | 52 | Wife | — | Wisconsin |
| 5 | Nelson Hoff | 55 | Lodger | — | Wisconsin |
| 6 | Hans Nelson | 70 | Head | — | Denmark |
| 7 | Alfred Nelson THIS PERSON | 31 | Son | Farmer | Wisconsin |
| 8 | Harold Nelson | 26 | Son | Farmer | Wisconsin |
| 9 | Pauline Nelson | 20 | Niece | — | Wisconsin |
| 11 | Henry Zimmerman | 63 | Head | Laborer | Wisconsin |
| 12 | Russell Hoffman | 41 | Head | Crane Operator | Iowa |
| 13 | Theresa Hoffman | 42 | Wife | — | Wisconsin |
| 14 | William Hoffman | 15 | Son | — | Wisconsin |
Pedigree Summary
Alfred + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)