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John Shaffer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grant-County, Indiana
Our Model Tree links this John Shaffer across the 1930 and 1940 US Censuses in Grant-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 7-person household.
Age 39
b. ~1901
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, Indiana |
| Surname | Shaffer |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Marion city |
| 1935 Residence (County) | Grant |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 950 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Carpenter |
| Township / Ward | Marion City |
| Est. Birth Year | ~1901 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Linda Shaffer | Daughter | — | 2 | ~1938 |
| Benford Shaffer | Son | — | 12 | ~1928 |
| Dorothy Shaffer | Daughter | — | 8 | ~1932 |
| Rollin Shaffer | Son | — | 17 | ~1923 |
| Nellie Shaffer | Spouse | — | 36 | ~1904 |
| David Shaffer | Son | — | 4 | ~1936 |
| John Shaffer | Head | — | 39 | ~1901 |
Census Appearances
1930
Grant, Indiana
Head, age 29
Grant, Indiana · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 20 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Manager |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Grant-County, Indiana
Head, age 39
Grant-County, Indiana · implied b. ~1901 — 7 household members
| Surname | Shaffer |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Marion city |
| 1935 Residence (County) | Grant |
| Occupation | Carpenter |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 950 |
| Highest Grade | No 8 |
| 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 John Shaffer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Shaffer
Head · 1940 · age 39 · b. ~1901 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Grant-County, Indiana
Open full size
1940 US Federal Census — Grant-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01047-00092)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leonard Cousins | 53 | Head | Moulder | N Carolina |
| 2 | Mary R Cousins | 49 | Wife | — | N Carolina |
| 3 | Herman Cousins | 24 | Son | Crane Operator | Indiana |
| 4 | Carl Hart | 30 | Head | Dept Mgr | Indiana |
| 5 | Lois Hart | 28 | Wife | — | Indiana |
| 6 | Patricia Hart | 6 | Daughter | — | Indiana |
| 7 | David F Collins | 39 | Head | Truck Driver | Indiana |
| 8 | Lela M Collins | 38 | Wife | Painter | Indiana |
| 9 | L Thomas Collins | 15 | Son | — | Indiana |
| 10 | Phyllis Ann Collins | 13 | Daughter | — | Indiana |
| 11 | John Freddie Collins | 10 | Son | — | Indiana |
| 12 | John A Shaffer THIS PERSON | 39 | Head | Carpenter | Indiana |
| 13 | Nellie Shaffer | 36 | Wife | — | Indiana |
| 14 | Rollin Earl Shaffer | 17 | Son | — | Indiana |
| 15 | Benford Paul Shaffer | 12 | Son | — | Indiana |
| 16 | Dorothy Shaffer | 8 | Daughter | — | Indiana |
| 17 | David Leroy Shaffer | 4 | Son | — | Indiana |
| 18 | Linda Lou Shaffer | 2 | Daughter | — | Indiana |
| 19 | William A Legg | 25 | Head | Service Man | Indiana |
| 20 | Evelyn L Legg | 24 | Wife | — | Indiana |
| 21 | Ora Stevens | 28 | Head | Wire Worker | Indiana |
| 22 | Edith Stevens | 23 | Wife | — | Indiana |
| 23 | Larry Lee Stevens | 2 | Son | — | Indiana |
| 24 | Raymond Small | 35 | Head | Operator | Indiana |
| 25 | Mary Ellen Small | 29 | Wife | — | Indiana |
| 26 | Jane Kay Small | 3 | Daughter | — | Indiana |
| 27 | Everett C Nutter | 33 | Head | Asst Foreman | Indiana |
| 28 | Agnes Nutter | 31 | Wife | Wrapper | Indiana |
| 29 | Nancy Lou Nutter | 10 | Daughter | — | Indiana |
| 30 | Sara Louise Nutter | 8 | Daughter | — | Indiana |
| 31 | Lawrence W Griffin | 44 | Head | Press Feeder | Indiana |
| 32 | Josephine Griffin | 43 | Wife | Packer | Kentucky |
| 33 | Robert Rex Griffin | 20 | Son | Clerk | Indiana |
| 34 | William Smith | 57 | Head | — | Canada |
| 35 | Clara Smith | 56 | Wife | — | Indiana |
| 36 | Evelyn Smith | 26 | Daughter | — | Indiana |
| 37 | Alberta Smith | 20 | Daughter | Clerk | Indiana |
| 38 | Wilma Smith | 19 | Daughter | — | Indiana |
| 39 | Minnie Smith | 17 | Daughter | — | Indiana |
| 40 | Hugh Smith | 16 | Son | — | Indiana |
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)