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John Schaffer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Carroll-County, Maryland
Our Model Tree links this John Schaffer across the 1920, 1930 and 1940 US Censuses in Carroll-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 2-person household.
Age 80
b. ~1860
Male
Head
Born: Maryland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Maryland |
| Surname | Schaffer |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Westminster City |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Westminster City |
| Est. Birth Year | ~1860 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Martha Schaffer | Daughter | — | 56 | ~1884 |
| John Schaffer | Head | — | 80 | ~1860 |
Census Appearances
Head, age 58
Carroll, Maryland · implied b. ~1862 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Salesman |
| Industry | Home farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Year of Naturalization | F |
| Birthplace (normalized) | maryland |
1930
Carroll, Maryland
Other, age 68
Carroll, Maryland · implied b. ~1862 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John H |
| Relationship to Head | Father-in-law |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 29 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Carroll-County, Maryland
Head, age 80
Carroll-County, Maryland · implied b. ~1860 — 2 household members
| Surname | Schaffer |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Westminster City |
| 1935 Residence (County) | Carroll |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Schaffer 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 Schaffer
Head · 1940 · age 80 · b. ~1860 · Maryland
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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 — Carroll-County, Maryland
Open full size
1940 US Federal Census — Carroll-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01544-00656)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertie M. Hall | 63 | Head | Manicurist | Maryland |
| 2 | Margaret A. Carroll | 74 | Head | — | Maryland |
| 3 | Charles E. Lippey | 69 | Head | Salesman | Maryland |
| 4 | Effie M. Lippey | 69 | Wife | — | Maryland |
| 5 | John C. Vandegrift | 51 | Head | Salesman | New York |
| 6 | Blanche L. Vandegrift | 41 | Wife | — | Maryland |
| 7 | Mary D. Vandegrift | 17 | Daughter | — | Maryland |
| 8 | John C. Jr. Vandegrift | 20 | Son | Plumber | Ohio |
| 9 | Julia F. Vandegrift | 20 | Daughter-in-law | Tabulator | Maryland |
| 10 | Thomas G. Benton | 78 | Head | — | Maryland |
| 11 | Amanda E. Schaffer | 74 | Sister | — | Maryland |
| 12 | C. Russell Schaffer | 42 | Head | Cashier | Maryland |
| 13 | Elizabeth S. Schaffer | 38 | Wife | — | Pennsylvania |
| 14 | C. Russell Jr. Schaffer | 15 | Son | — | Maryland |
| 15 | William S. Schaffer | 13 | Son | — | Maryland |
| 16 | John A. Schaffer THIS PERSON | 80 | Head | — | Maryland |
| 17 | Martha S. Schaffer | 56 | Daughter | — | Maryland |
| 18 | Edward P. Glantz | 33 | Head | Manager | Maryland |
| 19 | Mary Emily Glantz | 30 | Wife | Saleslady | Pennsylvania |
| 20 | Barbara Jane Glantz | 7 | Daughter | — | Maryland |
| 21 | Patricia Ann Glantz | 7 | Daughter | — | Maryland |
| 22 | Thomas P. Vandegrift | 24 | Head | Sheet Repairer | Maryland |
| 23 | Audrey E. Vandegrift | 21 | Wife | — | Maryland |
| 24 | Edward F. King | 69 | Head | Carpenter | Maryland |
| 25 | Anna L. King | 60 | Wife | — | Maryland |
| 26 | Ellwood E. King | 36 | Son | Chauffeur | Maryland |
| 27 | Glenn R. King | 23 | Son | Clerk | Maryland |
| 28 | Kathleen E. King | 14 | Daughter | — | Maryland |
| 29 | Ester Lane King | 11 | Daughter | — | Maryland |
| 30 | Gulton S. Eckard | 60 | Head | Paperhanger | Maryland |
| 31 | Rachel L. Eckard | 48 | Wife | — | Maryland |
| 32 | Caroline E. Eckard | 24 | Daughter | — | Maryland |
| 33 | Gulton E. Horton | 11 | Grandson | — | Maryland |
| 34 | James N. Chaney | 41 | Head | Salesman | Maryland |
| 35 | Antoinette V. Chaney | 34 | Wife | — | Maryland |
| 36 | James E. Chaney | 10 | Son | — | Maryland |
| 37 | Mary E. Chaney | 5 | Daughter | — | Maryland |
| 38 | George W. Myers | 53 | Head | — | Maryland |
| 39 | Mary S. Myers | 52 | Wife | — | Maryland |
| 40 | Cora M. Massey | 58 | Daughter | Dietician | Maryland |
Related Census Records
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)