WC
William Curtis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Posey-County, Indiana
Our Model Tree links this William Curtis across the 1920, 1930 and 1940 US Censuses in Posey-County, Indiana (XGBoost, ~Confirmed), with identified parents Nora & Ralph — first a son (b.~1920), then head of a 4-person household.
Age 20
b. ~1920
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Posey-County, Indiana |
| Surname | Curtis |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Black Township |
| 1935 Residence (County) | Posey |
| Additional Details | |
| Occupation | Laborer |
| Industry | on Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | Black Township |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| Ralph Curtis | Head | — | 46 | ~1894 |
| Raymond Curtis | Son | — | 19 | ~1921 |
| William Curtis | Son | — | 20 | ~1920 |
| Nora Curtis | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Posey, Indiana
Son, age
Posey, Indiana · implied b. ~1920
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Curtis |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Posey, Indiana
Son, age 10
Posey, Indiana · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | William H |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Posey-County, Indiana
Son, age 20
Posey-County, Indiana · implied b. ~1920 — 4 household members
| Surname | Curtis |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Black Township |
| 1935 Residence (County) | Posey |
| Occupation | Laborer |
| Industry | on Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Curtis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Nora Curtis (~0.92 confidence) and father Ralph Curtis (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Nora Curtis
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
Ralph Curtis
b. ~1894
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Curtis
Son · 1940 · age 20 · b. ~1920 · Indiana
★ You are viewing this record
Sibling
Raymond Curtis
Sibling · 1940 · age 19
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 — Posey-County, Indiana
Open full size
1940 US Federal Census — Posey-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01087-00229)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Doris Stark | 2 | Daughter | — | Indiana |
| 2 | William Kerr | 55 | Head | Laborer | Kentucky |
| 3 | Elizabeth Kerr | 44 | Wife | — | Kentucky |
| 4 | Henry Kerr | 22 | Son | Painter | Illinois |
| 5 | Louise Kerr | 20 | Daughter | — | Illinois |
| 6 | William Kerr | 16 | Son | — | Illinois |
| 7 | Wilfred Thomas | 42 | Head | Farmer | Indiana |
| 8 | Agnes Thomas | 32 | Wife | — | Indiana |
| 9 | Joseph Thomas | 11 | Son | — | Indiana |
| 10 | Waunita Thomas | 10 | Daughter | — | Indiana |
| 11 | Mary L Thomas | 9 | Daughter | — | Indiana |
| 12 | Edward Thomas | 8 | Son | — | Indiana |
| 13 | Donald R Thomas | 6 | Son | — | Indiana |
| 14 | Harold W Thomas | 5 | Son | — | Indiana |
| 15 | Elyn Thomas | 3 | Son | — | Indiana |
| 16 | Virgil Thomas | 1 | Son | — | Indiana |
| 17 | Robert Black | 74 | Head | Dairyman | Indiana |
| 18 | Lou Black | 85 | Sister | — | Indiana |
| 19 | Rachael Mills | 24 | Housekeeper | Housekeeper | Indiana |
| 20 | Bettie J Mills | 4 | Daughter | — | Indiana |
| 21 | George Bernd | 79 | Head | Farmer | Germany |
| 22 | Barbara Bernd | 73 | Wife | — | Germany |
| 23 | Freida Bernd | 47 | Daughter | Stenographer | Indiana |
| 24 | Elizabeth Black | 41 | Daughter | — | Indiana |
| 25 | John R Black | 19 | Son | Farmer | Indiana |
| 26 | Ralph Curtis | 46 | Head | Farmer | Indiana |
| 27 | Nora Curtis | 47 | Wife | — | Indiana |
| 28 | William H Curtis THIS PERSON | 20 | Son | Laborer | Indiana |
| 29 | Raymond T Curtis | 19 | Son | Laborer | Indiana |
| 30 | William E Linen | 74 | Head | Retired Farmer | Indiana |
| 31 | William Marvel | 45 | Head | Laborer | Kentucky |
| 32 | Ellen Marvel | 48 | Wife | — | Kentucky |
| 33 | Delmer Marvel | 20 | Son | Laborer | Kentucky |
| 34 | Vernon Marvel | 18 | Son | Laborer | Kentucky |
| 35 | Kathern Marvel | 13 | Daughter | — | Kentucky |
| 36 | Emma C Marvel | 10 | Daughter | — | Kentucky |
| 37 | William C Marvel | 7 | Son | — | Kentucky |
| 38 | William M Roach | 58 | Head | Laborer | Indiana |
| 39 | Mary Roach | 50 | Wife | — | Mississippi |
| 40 | John B Roach | 23 | Son | Laborer | Indiana |
Pedigree Summary
William + 1 sibling
Gen 1 · 2 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)