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John Shaffer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Washington, Kansas
Our Model Tree links this John Shaffer across the 1930 and 1940 US Censuses in Washington, Kansas (XGBoost, ~Confirmed) — first a son (b.~1904), then head of a 10-person household.
Age 26
b. ~1904
Male
Son
Born: Kansas
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Washington, Kansas |
| Surname | Shaffer |
| Given Name | John D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Laborer |
| Township / Ward | Greenleaf Township |
| Est. Birth Year | ~1904 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Shaffer | Daughter | — | 17 | ~1913 |
| Edith Shaffer | Daughter | — | 12 | ~1918 |
| Martha Shaffer | Daughter | — | 28 | ~1902 |
| Aneta Shaffer | Daughter | — | 24 | ~1906 |
| John Shaffer | Head | — | 57 | ~1873 |
| Martha Shaffer | Spouse | — | 54 | ~1876 |
| Bernice Shaffer | Daughter | — | 19 | ~1911 |
| Marie Shaffer | Daughter | — | 30 | ~1900 |
| John Shaffer | Son | — | 26 | ~1904 |
| Isabel Shaffer | Daughter | — | 22 | ~1908 |
Census Appearances
1930
Washington, Kansas
Son, age 26
Washington, Kansas · implied b. ~1904 — 10 household members
| Surname | Shaffer |
| Given Name | John D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Ohio |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Washington-County, Kansas
Head, age 37
Washington-County, Kansas · implied b. ~1903 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sheffer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Washington |
| Occupation | Laborer |
| Industry | Hatchery |
| Class of Worker | PW |
| Hours Worked | 14 |
| Income (1939) | 100 |
| Highest Grade | No 8 |
| 1935 Residence | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 John Shaffer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Shaffer
Son · 1930 · age 26 · b. ~1904 · Kansas
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Sibling
Edith Shaffer
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Shaffer
Sibling · 1930 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Aneta Shaffer
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabel Shaffer
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Shaffer
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Shaffer
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Shaffer
Sibling · 1930 · age 17
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 — Washington, Kansas
Open full size
1930 US Federal Census — Washington, Kansas
Page Contents
50 people indexed on this census page (ia:1930:15thcensus725usce:0802)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John S. Shaffer | 57 | Head | Farmer | Iowa |
| 52 | Martha A. Shaffer | 54 | Wife | — | Ohio |
| 53 | Marie Shaffer | 30 | Daughter | — | Kansas |
| 54 | Martha Shaffer | 28 | Daughter | Teacher | Kansas |
| 55 | John D. Shaffer THIS PERSON | 26 | Son | Laborer | Kansas |
| 56 | Aneta Shaffer | 24 | Daughter | — | Kansas |
| 57 | Isabel Shaffer | 22 | Daughter | — | Kansas |
| 58 | Bernice Shaffer | 19 | Daughter | — | Kansas |
| 59 | Mary Shaffer | 17 | Daughter | — | Kansas |
| 60 | Edith Shaffer | 12 | Daughter | — | Kansas |
| 61 | Mark W. Dewees | 64 | Head | Farmer | Ohio |
| 62 | Herbert Dewees | 20 | Son | Laborer | Kansas |
| 63 | Albert A. Karns | 67 | Head | Farmer | Ohio |
| 64 | Frances E. Karns | 68 | Wife | — | Indiana |
| 65 | Orel E. Karns | 41 | Daughter | — | Kansas |
| 66 | Halley A. Drebes | 35 | Daughter | Servant | Kansas |
| 67 | Rufus Roche | 32 | Head | Farmer | Kansas |
| 68 | Irwin Molby | 44 | Head | Laborer | New York |
| 69 | Bessie Molby | 33 | Wife | — | Nebraska |
| 70 | Lowell H. Molby | 10 | Son | — | Kansas |
| 71 | Bert G. Cook | 30 | Head | Farmer | Kansas |
| 72 | Lelia Cook | 29 | Wife | — | Kansas |
| 73 | Don Cook | 9 | Son | — | Kansas |
| 74 | Glen Cook | 7 | Son | — | Kansas |
| 75 | Robert Cook | 5 | Son | — | Kansas |
| 76 | Paul Cook | 4 | Son | — | Kansas |
| 77 | Violet Cook | 3 | Daughter | — | Kansas |
| 78 | Rosemarie Cook | 1 | Daughter | — | Kansas |
| 79 | Francis Warner | 20 | Son | Laborer | Kansas |
| 80 | Galatia Thomas Warner | 16 | Son | Laborer | Kansas |
| 81 | David Crawford | 61 | Head | Farmer | Iowa |
| 82 | Mary Crawford | 57 | Wife | — | Nebraska |
| 83 | Alvin Crawford | 33 | Head | Farmer | Nebraska |
| 84 | Edith Crawford | 33 | Wife | — | Kansas |
| 85 | Theodore Colp | 27 | Head | Minister | Kansas |
| 86 | Lucille Colp | 26 | Wife | — | Kansas |
| 87 | Armin Colp | 3 | Son | — | Kansas |
| 88 | Samuel Toppage | 62 | Head | Prop. Manager | Illinois |
| 89 | Nellie M. Toppage | 54 | Wife | Prop. Manager | Illinois |
| 90 | Sarah J. Dunning | 97 | Mother-in-law | — | Vermont |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)