MS
Mary Shaffer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Shaffer across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 11-person household.
Age 18
b. ~1912
Female
Daughter
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Shaffer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steam Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Roland Park |
| Est. Birth Year | ~1912 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bessie Shaffer | Daughter | — | 18 | ~1912 |
| Ralph Shaffer | Son | — | 20 | ~1910 |
| Mary Shaffer | Other | — | 4 | ~1926 |
| Mary Shaffer | Daughter | — | 18 | ~1912 |
| Edna Shaffer | Daughter | — | 15 | ~1915 |
| Grace Shaffer | Daughter | — | 16 | ~1914 |
| Harry Shaffer | Son | — | 12 | ~1918 |
| Charles Shaffer | Son | — | 14 | ~1916 |
| Maude Shaffer | Other | — | 44 | ~1886 |
| Charles Shaffer | Head | — | 46 | ~1884 |
| Nellie Shaffer | Son | — | 10 | ~1920 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 18
Baltimore, Maryland · implied b. ~1912 — 11 household members
| Surname | Shaffer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Steam Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 29
Baltimore-City-County, Maryland · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schafer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | Hs 1 |
| 1935 Residence | Same home |
| 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 · 1930 · age 18 · b. ~1912 · Maryland
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Sibling
Edna Shaffer
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Shaffer
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Shaffer
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Shaffer
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Shaffer
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bessie Shaffer
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Shaffer
Sibling · 1930 · 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
1930 US Federal Census — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
49 people indexed on this census page (ia:1930:15thcensus870unit:0022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Thomas Ruge Jr. Messner | 3 | Son | — | Maryland |
| 52 | Charles H. Mace | 50 | Head | — | Maryland |
| 53 | Martha E. Mace | 49 | Wife-H | Steam Filter | Maryland |
| 54 | Charles G. Mace | 25 | Son | — | Maryland |
| 55 | Charles Shaffer | 46 | Head | Inspector | Maryland |
| 56 | Maude E. Shaffer | 44 | Wife-H | Engineer | Maryland |
| 57 | Ralph G. Shaffer | 20 | Son | — | Pennsylvania |
| 58 | Mary E. Shaffer THIS PERSON | 18 | Daughter | Laborer | Maryland |
| 59 | Bessie A. Shaffer | 18 | Daughter | — | Maryland |
| 60 | Grace E. Shaffer | 16 | Daughter | — | Maryland |
| 61 | Edna F. Shaffer | 15 | Daughter | — | Maryland |
| 62 | Charles G. Shaffer | 14 | Son | — | Maryland |
| 63 | Harry M. Shaffer | 12 | Son | — | Maryland |
| 64 | Nellie S. Shaffer | 10 | Son | — | Maryland |
| 65 | Mary E. Shaffer | 4 | Grand Dau | — | Maryland |
| 66 | Frank Andrew | 44 | Head | — | Maryland |
| 67 | Blanche B. Andrew | 43 | Wife-H | Collector | Maryland |
| 68 | Chas. H. Andrew | 24 | Son | — | Maryland |
| 69 | Arthur B. Andrew | 24 | Son | Laborer | Maryland |
| 70 | Maude E. Andrew | 22 | Daughter | — | Maryland |
| 71 | Lydia M. Andrew | 22 | Daughter | Laboratory | Maryland |
| 72 | Estelle B. Andrew | 10 | Daughter | Operator | Maryland |
| 73 | Frank S. Andrew | 9 | Son | — | Maryland |
| 74 | Margaret Andrew | 6 | Daughter | — | Maryland |
| 75 | John Williams | 37 | Head | — | Maryland |
| 76 | Emma S. Williams | 33 | Wife-H | — | Maryland |
| 77 | Margaret Williams | 9 | Daughter | — | Maryland |
| 78 | Cora V. Williams | 7 | Daughter | — | Maryland |
| 79 | Emma S. Williams | 4 | Daughter | — | Maryland |
| 80 | Ruth Bennett | 37 | Boarder | — | Maryland |
| 81 | Jane E. Bennett | 5 | Boarder | Nurse | Maryland |
| 82 | William S. Frone | 58 | Head | — | Maryland |
| 83 | Emma J. Frone | 50 | Wife-H | Salesman | Maryland |
| 84 | Edgar C. Frone | 31 | Son | — | Maryland |
| 85 | L. Vernon Herr | 54 | Head | Agent | Maryland |
| 86 | Jennie V. Herr | 54 | Wife-H | Carpenter | Maryland |
| 87 | Laura V. Taylor | 74 | Mother-in-law | — | Maryland |
| 88 | Loyal Cox | 30 | Head | — | Maryland |
| 89 | Rose M. Cox | 22 | Wife-H | Watchman | Massachusetts |
| 90 | Rose M. Cox | 5 | Daughter | — | Maryland |
| 91 | Carl W. Meislohn | 42 | Head | — | Maryland |
| 92 | Emma V. Meislohn | 35 | Wife-H | Mechanic | Maryland |
| 93 | Charlotte K. Meislohn | 5 | Daughter | — | Maryland |
| 94 | William Benall | 73 | Head | Lineman | Maryland |
| 95 | Emma Benall | 61 | Wife-H | — | Maryland |
| 96 | Harry L. Benall | 31 | Son | Construction | Maryland |
| 97 | Margaret Benall | 26 | Daughter-in-law | — | Maryland |
| 98 | Harold Roseberry | 25 | Head | Professor | Arkansas |
| 99 | Margaret H. Roseberry | 21 | Wife-H | — | Maryland |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)