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John Shaffer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lenawee-County, Michigan
Our Model Tree links this John Shaffer across the 1920, 1930 and 1940 US Censuses in Lenawee-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 3-person household.
Age 67
b. ~1873
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lenawee-County, Michigan |
| Surname | Shaffer |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Adrian city |
| 1935 Residence (County) | Lenawee |
| Additional Details | |
| Occupation | Janitor |
| Industry | Rail Road |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1000 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Janitor |
| Township / Ward | Adrian City |
| Est. Birth Year | ~1873 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Shaffer | Head | — | 67 | ~1873 |
| Ivan Shaffer | Son | — | 16 | ~1924 |
| Mary Shaffer | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Lenawee, Michigan
Head, age 46
Lenawee, Michigan · implied b. ~1874 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Occupation | Section hand |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Lenawee, Michigan
Head, age 56
Lenawee, Michigan · implied b. ~1874 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Canada English |
| Occupation | Section man |
| Industry | Steam railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1,500 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lenawee-County, Michigan
Head, age 67
Lenawee-County, Michigan · implied b. ~1873 — 3 household members
| Surname | Shaffer |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Adrian city |
| 1935 Residence (County) | Lenawee |
| Occupation | Janitor |
| Industry | Rail Road |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1000 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Shaffer
Head · 1940 · age 67 · b. ~1873 · Michigan
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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 — Lenawee-County, Michigan
Open full size
1940 US Federal Census — Lenawee-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01778-00432)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary H. Krueger | 51 | Head | Laundress | Illinois |
| 2 | Bertha M. Krueger | 66 | Sister | Washing | Germany |
| 3 | Paul Holmes | 80 | Head | — | Michigan |
| 4 | John W. Shaffer THIS PERSON | 67 | Head | Janitor | Ohio |
| 5 | Mary L. Shaffer | 48 | Wife | — | Ohio |
| 6 | Ivan R. Shaffer | 16 | Son | Farm Helper | Michigan |
| 7 | Aubrey M. Ray | 56 | Head | Machine Opr. | Michigan |
| 8 | Pearl G. Ray | 54 | Wife | — | Indiana |
| 9 | Arthur Theerhood | 34 | Head | Machinist | Michigan |
| 10 | Leona P. Theerhood | 29 | Wife | — | Illinois |
| 11 | Lois Lois Theerhood | 4 | Daughter | — | Michigan |
| 12 | Everett W. Kephart | 32 | Head | Shipping Clerk | Michigan |
| 13 | Ruth V. Kephart | 32 | Wife | — | Pennsylvania |
| 14 | William J. Kephart | 11 | Son | — | Pennsylvania |
| 15 | James M. Kephart | 8 | Son | — | Michigan |
| 16 | Ruth L. Kephart | 1 | Daughter | — | Michigan |
| 17 | Philemon Bournes | 35 | Head | Fireman | Maryland |
| 18 | Ruby A. Bournes | 35 | Wife | — | Ohio |
| 19 | Betty J. Bournes | 10 | Daughter | — | Michigan |
| 20 | Joyce Bournes | 7 | Daughter | — | Michigan |
| 21 | Harold Bournes | 25 | Brother | Forman | Michigan |
| 22 | Frank C. Eberit | 62 | Head | — | Michigan |
| 23 | Vera L. Onsted | 59 | Lodger | — | Michigan |
| 24 | Peter J. Ulrich | 46 | Head | Forman | Michigan |
| 25 | Bessie Ulrich | 42 | Wife | — | West Virginia |
| 26 | Ernest L. Johns | 40 | Head | Machine Opr. | Michigan |
| 27 | Hazel L. Johns | 23 | Wife | Paint Dipper | Michigan |
| 28 | Martin C. Tornow | 57 | Head | Clerk Office | Michigan |
| 29 | Minnie Tornow | 44 | Wife | — | Illinois |
| 30 | Marian F. Tornow | 23 | Daughter | Saleswoman | Illinois |
| 31 | Ronald F. Tornow | 12 | Son | — | Illinois |
| 32 | Robert C. Tornow | 11 | Son | — | Illinois |
| 33 | James F. Tornow | 5 | Son | — | Illinois |
| 34 | Edward Filter | 38 | Head | Machine Opr. | Michigan |
| 35 | Alma C. Filter | 37 | Wife | — | Michigan |
| 36 | Harold F. Filter | 12 | Son | — | Michigan |
| 37 | Arloa L. Filter | 10 | Daughter | — | Michigan |
| 38 | Dalton R. Filter | 7 | Son | — | Michigan |
| 39 | Herbert R. Filter | 0 | Son | — | Michigan |
| 40 | Roy T. Book | 56 | Head | Railroad Agent | Michigan |
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)