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Robert Willis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sanilac-County, Michigan
Our Model Tree links this Robert Willis across the 1920, 1930 and 1940 US Censuses in Sanilac-County, Michigan (XGBoost, ~Confirmed), with identified parents William & Mary — first a son (b.~1914), then head of a 8-person household.
Age 26
b. ~1914
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sanilac-County, Michigan |
| Surname | Willis |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Sanilac T |
| 1935 Residence (County) | Sanilac |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farmer |
| Township / Ward | Sanilac T |
| Est. Birth Year | ~1914 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Willis | Son | — | 26 | ~1914 |
| Bethel Willis | Other | — | 18 | ~1922 |
| Gay Willis | Other | — | 2 | ~1938 |
| Russell Willis | Son | — | 28 | ~1912 |
| Mary Willis | Daughter | — | 2 | ~1938 |
| Helen Willis | Other | — | 24 | ~1916 |
| William Willis | Head | — | 68 | ~1872 |
| Mary Willis | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Sanilac, Michigan
Son, age 6
Sanilac, Michigan · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Willis |
| Given Name | Robert W |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Canada |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Sanilac, Michigan
Son, age 16
Sanilac, Michigan · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Willis |
| Given Name | Robert W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Sanilac-County, Michigan
Son, age 26
Sanilac-County, Michigan · implied b. ~1914 — 8 household members
| Surname | Willis |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Sanilac T |
| 1935 Residence (County) | Sanilac |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Robert Willis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Willis (~0.92 confidence) and mother Mary Willis (~0.92 confidence) and mother Mary Willis (~0.92 confidence) and mother Mary Willis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Willis
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Willis
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Mary Willis
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Mary Willis
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Willis
Son · 1940 · age 26 · b. ~1914 · Michigan
★ You are viewing this record
Sibling
Mary Willis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russell Willis
Sibling · 1940 · age 28
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 — Sanilac-County, Michigan
Open full size
1940 US Federal Census — Sanilac-County, Michigan
Page Contents
31 people indexed on this census page (nara:1940:m-t0627-01818-00746)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest B. Myers | 47 | Head | Farmer | Virginia |
| 2 | Elsie N. Myers | 39 | Wife | — | Michigan |
| 3 | Mary Mcnaughton | 71 | Mother-in-law | — | Canada |
| 4 | William H. Willis | 68 | Head | Farmer | Michigan |
| 5 | Mary L. Willis | 57 | Wife | — | Canada |
| 6 | Russell H. Willis | 28 | Son | Farmer | Michigan |
| 7 | Bethel E. Willis | 18 | Daughter-in-law | — | Michigan |
| 8 | Gay S. Willis | 2 | Grandson | — | Michigan |
| 9 | Robert W. Willis THIS PERSON | 26 | Son | Farmer | Michigan |
| 10 | Helen I. Willis | 24 | Daughter-in-law | — | Michigan |
| 11 | Mary Jane Willis | 2 | Daughter | — | Michigan |
| 12 | William Albrecht | 47 | Head | Farmer | Michigan |
| 13 | Emma D. Albrecht | 45 | Wife | — | Michigan |
| 14 | Chester O. Albrecht | 22 | Son | Laborer | Michigan |
| 15 | Kay H. Albrecht | 20 | Son | Laborer | Michigan |
| 16 | Milton C. Albrecht | 19 | Son | Truck Driver | Michigan |
| 17 | Stanley N. Albrecht | 18 | Son | Laborer | Michigan |
| 18 | William Jr. Albrecht | 16 | Son | New Worker | Michigan |
| 19 | Sanford L. Albrecht | 4 | Son | — | Michigan |
| 20 | Charles R. Rowe | 64 | Head | Farmer | Canada |
| 21 | Mary E. Rowe | 62 | Wife | — | England |
| 22 | Alton C. Rowe | 30 | Son | Laborer On Farm | Michigan |
| 23 | Fred Albrecht | 51 | Head | Farmer | Michigan |
| 24 | Ella E. Albrecht | 47 | Wife | — | Michigan |
| 25 | Donald C. Albrecht | 21 | Son | Farmer | Michigan |
| 26 | Clarence R. Clark | 37 | Head | Farmer | Michigan |
| 27 | Emma M. Clark | 48 | Wife | — | Michigan |
| 28 | Wilma C. Clark | 14 | Daughter | — | Michigan |
| 29 | Winston R. Clark | 12 | Son | — | Michigan |
| 30 | Alfred H. Cuppen | 27 | Head | Farmer | Michigan |
| 31 | Esther Cuppen | 24 | Wife | Teacher | Wisconsin |
Related Census Records
Pedigree Summary
Robert + 2 siblings
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)