WD
William Decker — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Vanderburgh, Indiana
Our Model Tree links this William Decker across the 1930 and 1940 US Censuses in Vanderburgh, Indiana (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 3
b. ~1927
Male
Son
Born: Indiana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Vanderburgh, Indiana |
| Surname | Decker |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Evansville City |
| Est. Birth Year | ~1927 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Decker | Son | — | 3 | ~1927 |
| Helen Decker | Daughter | — | 11 | ~1919 |
| William Decker | Head | — | 32 | ~1898 |
| Kathryn Decker | Daughter | — | 1 | ~1929 |
| Dorothy Decker | Daughter | — | 5 | ~1925 |
| George Decker | Son | — | 9 | ~1921 |
| Ethel Decker | Spouse | — | 27 | ~1903 |
Census Appearances
1930
Vanderburgh, Indiana
Son, age 3
Vanderburgh, Indiana · implied b. ~1927 — 7 household members
| Surname | Decker |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Vanderburgh-County, Indiana
Son, age 15
Vanderburgh-County, Indiana · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ducker |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Earle |
| 1935 Residence (County) | Scott |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Indiana |
| 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 Decker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Decker
Son · 1930 · age 3 · b. ~1927 · Indiana
★ You are viewing this record
Sibling
Helen Decker
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Decker
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Decker
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Decker
Sibling · 1930 · age 9
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
1930 US Federal Census — Vanderburgh, Indiana
Open full size
1930 US Federal Census — Vanderburgh, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel633:1087)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Magdalena Hass | 25 | Head | — | Indiana |
| 2 | John Holey | 50 | Head | Proprietor | Indiana |
| 3 | Mary Holey | 40 | Wife | — | Indiana |
| 4 | Paul Holey | 17 | Son | — | Indiana |
| 5 | Anna Belle Holey | 15 | Daughter | — | Indiana |
| 6 | Rachel Holey | 13 | Daughter | — | Indiana |
| 7 | Charles Batz | 60 | Head | Gardener | Indiana |
| 8 | Nellie Batz | 58 | Sister | — | Indiana |
| 9 | Edward Iker | 51 | Head | Farmer | Indiana |
| 10 | George Iker | 50 | Brother | Laborer | Indiana |
| 11 | Elizabeth Iker | 54 | Sister | — | Indiana |
| 12 | Lena Iker | 62 | Sister | — | Indiana |
| 13 | Dan W. Erdman | 43 | Head | — | Maryland |
| 14 | Mary Erdman | 39 | Wife | — | Indiana |
| 15 | Jack Erdman | 13 | Son | — | Indiana |
| 16 | Robert Erdman | 8 | Son | — | Indiana |
| 17 | Thomas Schutz | 26 | Head | Laborer | Indiana |
| 18 | Jeanette Schutz | 21 | Wife | — | Indiana |
| 19 | Richard Schutz | 4 | Son | — | Indiana |
| 20 | Edward Pierce | 51 | Head | Laborer | Indiana |
| 21 | Della Pierce | 50 | Wife | — | Indiana |
| 22 | Harold Pierce | 17 | Son | — | Indiana |
| 23 | Lloyd Pierce | 12 | Son | — | Indiana |
| 24 | William Tenney | 58 | Head | — | Indiana |
| 25 | Sara J. Tenney | 47 | Wife | — | Indiana |
| 26 | Eva Tenney | 14 | Daughter | — | Indiana |
| 27 | William Jr. Tenney | 11 | Son | — | Indiana |
| 28 | Lloyd Tenney | 9 | Son | — | Indiana |
| 29 | Donald Tenney | 6 | Son | — | Indiana |
| 30 | Joseph Willis | 38 | Head | — | Indiana |
| 31 | Etta Willis | 35 | Wife | — | Indiana |
| 32 | Arthur Willis | 12 | Son | — | Indiana |
| 33 | Paul Willis | 4 | Son | — | Indiana |
| 34 | William Decker | 32 | Head | Laborer | Kentucky |
| 35 | Ethel Decker | 27 | Wife | — | Indiana |
| 36 | Helen Decker | 11 | Daughter | — | Indiana |
| 37 | George Decker | 9 | Son | — | Indiana |
| 38 | Dorothy Decker | 5 | Daughter | — | Indiana |
| 39 | William Decker THIS PERSON | 3 | Son | — | Indiana |
| 40 | Kathryn Decker | 1 | Daughter | — | Indiana |
| 41 | Arthur Dull | 33 | Head | Truck Driver | Indiana |
| 42 | Lilla Dull | 21 | Wife | — | Indiana |
| 43 | Albert M. Brandt | 41 | Head | Laborer | Kentucky |
| 44 | Bertha Brandt | 34 | Wife | — | Germany |
| 45 | Marie Brandt | 17 | Daughter | — | Indiana |
| 46 | Albert S. Brandt | 14 | Son | — | Indiana |
| 47 | Delbert Brandt | 12 | Son | — | Indiana |
| 48 | Harry Brandt | 10 | Son | — | Indiana |
| 49 | Mabel Brandt | 8 | Son | — | Indiana |
| 50 | Ida Brandt | 5 | Daughter | — | Indiana |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)