MS
Mary Shaffer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegany-County, Maryland
Our Model Tree links this Mary Shaffer across the 1930 and 1940 US Censuses in Allegany-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegany-County, Maryland |
| Surname | Shaffer |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Cumberland |
| 1935 Residence (County) | Allegany |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Cumberland |
| Est. Birth Year | ~1930 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Paul Shaffer | Son | — | 12 | ~1928 |
| Elzie Shaffer | Head | — | 52 | ~1888 |
| Thomas Shaffer | Son | — | 6 | ~1934 |
| Anna Shaffer | Daughter | — | 19 | ~1921 |
| Mary Shaffer | Daughter | — | 10 | ~1930 |
| Theodora Shaffer | Spouse | — | 52 | ~1888 |
| Francis Shaffer | Son | — | 16 | ~1924 |
| Charles Shaffer | Son | — | 22 | ~1918 |
Census Appearances
1930
Allegany, Maryland
Daughter, age
Allegany, Maryland · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Allegany-County, Maryland
Daughter, age 10
Allegany-County, Maryland · implied b. ~1930 — 8 household members
| Surname | Shaffer |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Cumberland |
| 1935 Residence (County) | Allegany |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| 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 Mary Shaffer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Shaffer
Daughter · 1940 · age 10 · b. ~1930 · Maryland
★ You are viewing this record
Sibling
Anna Shaffer
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Shaffer
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Shaffer
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Shaffer
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Shaffer
Sibling · 1940 · age 16
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
1940 US Federal Census — Allegany-County, Maryland
Open full size
1940 US Federal Census — Allegany-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01498-00162)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia G Webster | 41 | Head | Sewing | Virginia |
| 2 | Mary J Webster | 15 | Daughter | Student | Maryland |
| 3 | Carl Webster | 12 | Son | — | Maryland |
| 5 | Hyman Writzman | 28 | Head | Sales Manager | New York |
| 6 | Hilda Writzman | 27 | Wife | House Wife | Pennsylvania |
| 7 | Anna P Hartung | 36 | Head | Personal Service | Maryland |
| 8 | Ethel Hartung | 16 | Daughter | Student | Maryland |
| 9 | Leroy S Collins | 61 | Head | Ins. Inspector | Illinois |
| 10 | Mary C Collins | 63 | Wife | House Wife | Illinois |
| 11 | Nellie Miller | 54 | Sister in law | Companion | Illinois |
| 12 | Elzie A Shaffer | 52 | Head | Station Operator | Maryland |
| 13 | Theodora Shaffer | 52 | Wife | House Wife | Maryland |
| 14 | Charles R Shaffer | 22 | Son | Warp Knitter | Maryland |
| 15 | Anna M Shaffer | 19 | Daughter | House Keeper | Maryland |
| 16 | Francis A Shaffer | 16 | Son | Student | Maryland |
| 17 | Paul R Shaffer | 12 | Son | — | Maryland |
| 18 | Mary J Shaffer THIS PERSON | 10 | Daughter | — | Maryland |
| 19 | Thomas P Shaffer | 6 | Son | — | Maryland |
| 20 | John E Webb | 26 | Head | Charge Hand | Maryland |
| 21 | Pauline S Webb | 24 | Wife | — | Pennsylvania |
| 22 | Mary P Webb | 5 | Daughter | — | Maryland |
| 23 | Rose Marie Webb | 3 | Daughter | — | Maryland |
| 24 | James B Webb | 2 | Son | — | Maryland |
| 25 | Annie Hammerschmidt | 71 | Head | House Keeper | Maryland |
| 26 | Samuel J Blank | 31 | Head | Machine Operator | Maryland |
| 27 | Madeline R Blank | 28 | Wife | Bobbin Store | Maryland |
| 28 | John S Gridley | 46 | Head | Office Clerk | Missouri |
| 29 | Virginia L Gridley | 70 | Wife | House Wife | Virginia |
| 30 | Joseph V Kuppert | 70 | Head | Bottler Manager | West Virginia |
| 31 | Annie E Kuppert | 71 | Wife | House Wife | Pennsylvania |
| 32 | Paul F Kuppert | 28 | Son | Oil Drilling | Maryland |
| 33 | Marie Mcgann | 45 | Daughter | Sales Lady | Maryland |
| 34 | Phillip Mcgann | 21 | Grand Son | Warp Knitting | Maryland |
| 35 | Leo Mcgann | 19 | Grand Son | Paper Router | Maryland |
| 36 | Forest G Dayton | 23 | Head | Spinner | Maryland |
| 37 | Marie A Dayton | 23 | Wife | General Secretary | Maryland |
| 38 | William F Weber | 63 | Head | Billi Room | Maryland |
| 39 | Clara C Weber | 64 | Wife | House Wife | Maryland |
| 40 | Helen Ward | 17 | Niece | Student | Pennsylvania |
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)