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John Shaffer — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Carroll, Maryland
Our Model Tree links this John Shaffer across the 1920, 1930 and 1940 US Censuses in Carroll, Maryland (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 8-person household.
Age 58
b. ~1862
Male
Head
Born: Maryland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Carroll, Maryland |
| 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 |
| Additional Details | |
| 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 |
| Occupation | Salesman |
| Township / Ward | Election District No 2 |
| Est. Birth Year | ~1862 |
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.
8 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mildred Mathias | Other | — | 2 | ~1918 |
| Gertrude Shaffer | Spouse | — | 52 | ~1868 |
| George Tracy | Other | — | 24 | ~1896 |
| Gola Tracy | Daughter | — | 29 | ~1891 |
| John Shaffer | Head | — | 58 | ~1862 |
| Helen Mathias | Daughter | — | 24 | ~1896 |
| Vernon Mathias | Other | — | 22 | ~1898 |
| Mary Shaffer | Other | — | 81 | ~1839 |
Census Appearances
1920
Carroll, Maryland
Head, age 58
Carroll, Maryland · implied b. ~1862 — 8 household members
| 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 |
Head, age 80
Carroll-County, Maryland · implied b. ~1860 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| 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 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 · 1920 · age 58 · b. ~1862 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Carroll, Maryland
Open full size
1920 US Federal Census — Carroll, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu670unit:0198)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Amos M. Wolfe | 47 | Head | Farmer | Maryland |
| 2 | Amanda Wolfe | 46 | Wife | — | Maryland |
| 3 | Mary E. Wolfe | 22 | Daughter | — | Maryland |
| 4 | Maurice J. Wolfe | 17 | Son | — | Maryland |
| 5 | Goldie S. Wolfe | 15 | Daughter | — | Maryland |
| 6 | Helen R. Wolfe | 13 | Daughter | — | Maryland |
| 7 | Ruby M. Wolfe | 11 | Daughter | — | Maryland |
| 8 | Madaline Wolfe | 8 | Daughter | — | Maryland |
| 9 | Wheeler Brooks | 32 | Head | Farmer | Maryland |
| 10 | Annie Brooks | 22 | Wife | — | Maryland |
| 11 | Helen Brooks | 4 | Daughter | — | Maryland |
| 12 | Vernon Brooks | 2 | Son | — | Maryland |
| 13 | George Fiddis | 18 | Lodger | Laborer | Maryland |
| 14 | George Eckhart | 55 | Head | Farmer | Maryland |
| 15 | Flora Eckhart | 47 | Wife | — | Maryland |
| 16 | Charles Eckhart | 14 | Son | — | Maryland |
| 17 | Helen Eckhart | 12 | Daughter | — | Maryland |
| 18 | William Eisenberg | 40 | Head | Farmer | Maryland |
| 19 | Ella Eisenberg | 37 | Wife | — | Maryland |
| 20 | Mary Eisenberg | 14 | Daughter | — | Maryland |
| 21 | Joseph Eisenberg | 12 | Son | — | Maryland |
| 22 | John H. Shaffer THIS PERSON | 58 | Head | Salesman | Maryland |
| 23 | Gertrude Shaffer | 52 | Wife | — | Maryland |
| 24 | Gola Tracy | 29 | Daughter | — | Maryland |
| 25 | George Tracy | 24 | Son-in-law | Farmer | Maryland |
| 26 | Helen M. Mathias | 24 | Daughter | — | Maryland |
| 27 | Vernon Mathias | 22 | Son-in-law | Farmer | Maryland |
| 28 | Mildred Mathias | 2 | Granddaughter | — | Maryland |
| 29 | Mary A. Shaffer | 81 | Mother | — | Maryland |
| 30 | Joseph E. Biggs | 47 | Head | Farmer | Maryland |
| 31 | Lydia S. Biggs | 43 | Wife | — | Maryland |
| 32 | Levin Biggs | 19 | Son | Laborer | Maryland |
| 33 | Raymond Biggs | 14 | Son | — | Maryland |
| 34 | Russell G. Biggs | 12 | Son | — | Pennsylvania |
| 35 | Elsie S. Biggs | 6 | Daughter | — | Pennsylvania |
| 36 | Howard Reeser | 38 | Head | Laborer | Maryland |
| 37 | Bertha Reeser | 29 | Wife | — | Maryland |
| 38 | Helen Reeser | 7 | Daughter | — | Maryland |
| 39 | Amanda Hamblin | 55 | Mother-in-law | — | Maryland |
| 40 | Milton Reall | 45 | Head | Farmer | Maryland |
| 41 | Ella Reall | 42 | Wife | — | Maryland |
| 42 | Maurice Reall | 22 | Son | Laborer | Maryland |
| 43 | Mary Reall | 20 | Daughter | Servant | Maryland |
| 44 | George Burger Reall | 18 | Son | — | Maryland |
| 45 | Jacob H. Little | 53 | Head | Carpenter | Maryland |
| 46 | Ida S. Little | 46 | Wife | — | Maryland |
| 47 | Charles E. Little | 22 | Son | Laborer | Maryland |
| 48 | David S. Sligar | 35 | Head | Farmer | Maryland |
| 49 | Florence Sligar | 32 | Wife | — | Maryland |
| 50 | Mildred Sligar | 10 | Daughter | — | Maryland |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)