WB
William Black — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dane-County, Wisconsin
Our Model Tree links this William Black across the 1910, 1920, 1930 and 1940 US Censuses in Dane-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Niles & Peter — first a head (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dane-County, Wisconsin |
| Surname | Black |
| Given Name | William C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Madison City |
| 1935 Residence (County) | Dane |
| Additional Details | |
| Occupation | Commercial Photographer |
| Industry | Own Studio |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 894 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Commercial Photographer |
| Township / Ward | Madison City |
| 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 William | Age | Birth yr |
|---|---|---|---|---|
| William Black | Head | — | 31 | ~1909 |
| June Senz | Other | — | 21 | ~1919 |
| James Black | Son | — | 8 | ~1932 |
| Helen Black | Spouse | — | 26 | ~1914 |
Census Appearances
1910
Dane, Wisconsin
Son, age 1
Dane, Wisconsin · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Dane, Wisconsin
Son, age 11
Dane, Wisconsin · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Wisconsin |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Dane, Wisconsin
Son, age 21
Dane, Wisconsin · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Wisconsin |
| Occupation | photographer |
| Industry | commercial studio |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Dane-County, Wisconsin
Head, age 31
Dane-County, Wisconsin · implied b. ~1909 — 4 household members
| Surname | Black |
| Given Name | William C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Madison City |
| 1935 Residence (County) | Dane |
| Occupation | Commercial Photographer |
| Industry | Own Studio |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 894 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Black across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Niles Black (~0.92 confidence) and father Peter Black (~0.92 confidence) and mother Sarah Black (~0.92 confidence) and mother Sarah Black (~0.92 confidence) and mother Seder Black (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Niles Black
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Peter Black
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Sarah Black
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Sarah Black
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Seder Black
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Black
Head · 1940 · age 31 · b. ~1909 · Wisconsin
★ 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 — Dane-County, Wisconsin
Open full size
1940 US Federal Census — Dane-County, Wisconsin
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04469-00953)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Solveig Hansen | 34 | Wife | — | Norway |
| 2 | Ingard Hansen | 16 | Daughter | — | Norway |
| 3 | Berthard Connaughton | 50 | Head | Monotype Operator | Wisconsin |
| 4 | Grace Connaughton | 50 | Wife | — | Wisconsin |
| 5 | Mary Connaughton | 23 | Daughter | Retail Saleswoman | Wisconsin |
| 6 | Joan Evelyn Connaughton | 20 | Daughter | Social Worker | Iowa |
| 7 | George Gundlach | 59 | Head | Railway Conductor | Germany |
| 8 | Emma Gundlach | 52 | Wife | — | Wisconsin |
| 9 | Raymond Schultz | 29 | Son | Linesman | Wisconsin |
| 10 | Michael Simmen | 41 | Head | Plumbing Engineer | Wisconsin |
| 11 | Ida Simmen | 35 | Wife | — | Wisconsin |
| 12 | Michael, Jr. Simmen | 9 | Son | — | Wisconsin |
| 13 | Mary Simmen | 8 | Daughter | — | Wisconsin |
| 14 | Orian I. Dhein | 45 | Head | Industrial Education | Ohio |
| 15 | Marie S. Dhein | 44 | Wife | — | Ohio |
| 16 | Carolyn Dhein | 17 | Daughter | — | Wisconsin |
| 17 | Delmar Dhein | 15 | Son | — | Wisconsin |
| 18 | William C. Black THIS PERSON | 31 | Head | Commercial Photographer | Wisconsin |
| 19 | Helen Black | 26 | Wife | — | Wisconsin |
| 20 | James W. Black | 8 | Son | — | Wisconsin |
| 21 | June Senz | 21 | Servant | Servant | Wisconsin |
| 22 | Charles A. Brecke | 44 | Head | Sales Manager | Illinois |
| 23 | Amelia Brecke | 40 | Wife | — | Czechoslovakia |
| 24 | Georgene Brecke | 19 | Daughter | Bookkeeper | Illinois |
| 25 | Anna A. Brecke | 16 | Daughter | — | Illinois |
| 26 | Mary D. Brecke | 15 | Daughter | — | Wisconsin |
| 27 | Mabel Hendrickson | 43 | Head | English Teacher | Wisconsin |
| 28 | Gust Hendrickson | 74 | Father | — | Norway |
| 29 | Janice Hendrickson | 21 | Niece | Child Nurse | Wisconsin |
| 30 | Carol Hendrickson | 19 | Niece | Desk Girl | Wisconsin |
| 31 | Louise Williams | 45 | Head | History Teacher | Minnesota |
| 32 | Eva Williams | 74 | Wife | Substitute Math Instructor | Ohio |
| 33 | Joseph J. Croke | 49 | Head | Machinist | Wisconsin |
| 34 | Ida Croke | 46 | Wife | — | Wisconsin |
| 35 | Constance Croke | 18 | Daughter | Stenographer | Wisconsin |
| 36 | Josephine Croke | 13 | Daughter | — | Wisconsin |
| 37 | Edward R. Boldt | 54 | Head | Superintendent Of Grounds | Wisconsin |
| 38 | Lydia R. Boldt | 51 | Wife | — | Wisconsin |
| 39 | Ruby E. Boldt | 25 | Daughter | Fashion Illustrating | Wisconsin |
Pedigree Summary
William
Gen 1 · 5 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)