MG
Mary Griffith — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Washington, Maryland
Our Model Tree links this Mary Griffith across the 1920 and 1930 US Censuses in Washington, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 12-person household.
Age 17
b. ~1913
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Washington, Maryland |
| Surname | Griffith |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 9 |
| Est. Birth Year | ~1913 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elsie Griffith | Daughter | — | 3 | ~1927 |
| Mary Griffith | Daughter | — | 17 | ~1913 |
| Pauline Griffith | Daughter | — | 7 | ~1923 |
| Margaret Griffith | Daughter | — | 6 | ~1924 |
| Martha Zimmerman | Daughter | — | 19 | ~1911 |
| Della Griffith | Daughter | — | 1 | ~1929 |
| James Griffith | Head | — | 40 | ~1890 |
| Anna Griffith | Other | — | 39 | ~1891 |
| Frank Zimmerman | Other | — | 28 | ~1902 |
| Howard Griffith | Son | — | 11 | ~1919 |
| Albert Griffith | Son | — | 13 | ~1917 |
| Elmer Griffith | Son | — | 9 | ~1921 |
Census Appearances
1920
Washington, Maryland
Daughter, age 7
Washington, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | Mary E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Washington, Maryland
Daughter, age 17
Washington, Maryland · implied b. ~1913 — 12 household members
| Surname | Griffith |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| 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 Griffith across 2 US Census years (1920 and 1930) in Washington, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Griffith
Daughter · 1930 · age 17 · b. ~1913 · Maryland
★ You are viewing this record
Sibling
Elsie Griffith
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Zimmerman
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Griffith
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Della Griffith
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Griffith
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Griffith
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Griffith
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Griffith
Sibling · 1930 · age 13
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 — Washington, Maryland
Open full size
1930 US Federal Census — Washington, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus881unit:0745)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David Sweigert | 72 | Head | Farm Laborer | Pennsylvania |
| 2 | Margaret Sweigert | 60 | Wife-H | — | Pennsylvania |
| 3 | Clarence C. Sweigert | 35 | Son | Auto Mechanic | Pennsylvania |
| 4 | Pauline Sweigert | 9 | Dau. Daughter | — | Pennsylvania |
| 5 | Hilda Gish | 12 | Boarder | — | Maryland |
| 6 | Elsie Sweigert | 6 | Grand Daughter | — | Pennsylvania |
| 7 | Junior Sweigert | 3 | Grandson | — | Maryland |
| 8 | Emma Smith | 21 | Servant | Servant | Maryland |
| 9 | Charles E. Keedy | 60 | Head | Farmer | Maryland |
| 10 | Carrie Keedy | 43 | Wife-H | — | Rhode Island |
| 11 | Ruth Keedy | 8 | Daughter | — | Maryland |
| 12 | Robert A. Keedy | 7 | Son | — | Maryland |
| 13 | Russel J. Castle | 42 | Head | Farmer | Maryland |
| 14 | Mamie Castle | 33 | Wife-H | — | Maryland |
| 15 | Arlington Castle | 12 | Son | — | Maryland |
| 16 | Mildred Castle | 10 | Daughter | — | Maryland |
| 17 | Junie Castle | 6 | Son | — | Maryland |
| 18 | Gerald Castle | 4 | Son | — | Maryland |
| 19 | Lewis Castle | 1 | Son | — | Maryland |
| 20 | William H. Casterday | 54 | Head | Farmer | Maryland |
| 21 | Bessie V. Casterday | 54 | Wife-H | — | Maryland |
| 22 | Lester H. Casterday | 25 | Son | Farm Laborer | Maryland |
| 23 | Catherine V. Casterday | 22 | Daughter-in-law | — | Virginia |
| 24 | Willard W. Casterday | 17 | Son | — | Maryland |
| 25 | Charles W. Thomas | 63 | Head | Trucker | Maryland |
| 26 | Emma R. Thomas | 37 | Wife-H | — | Maryland |
| 27 | Eugene Thomas | 9 | Son | — | Maryland |
| 28 | Robert E. Thomas | 55 | Head | Laborer | Maryland |
| 29 | Elsie M. Thomas | 47 | Wife-H | — | Maryland |
| 30 | Charles E. Thomas | 20 | Son | Farm Laborer | Maryland |
| 31 | Jasper N. Thomas | 18 | Son | Farm Laborer | Maryland |
| 32 | O. Ambrose Thomas | 17 | Son | Laborer | Maryland |
| 33 | Harry F. Thomas | 13 | Son | — | Maryland |
| 34 | Robert W. Thomas | 11 | Son | — | Maryland |
| 35 | Martha V. Thomas | 7 | Daughter | — | Maryland |
| 36 | James Griffith | 40 | Head | Farmer | Maryland |
| 37 | Anna M. Griffith | 39 | Wife-H | — | Maryland |
| 38 | Frank Zimmerman | 28 | Son-in-law | Farm Laborer | Maryland |
| 39 | Martha E. Zimmerman | 19 | Daughter | — | Maryland |
| 40 | Mary E. Griffith THIS PERSON | 17 | Daughter | — | Maryland |
| 41 | Albert F. Griffith | 13 | Son | — | Maryland |
| 42 | Howard L. Griffith | 11 | Son | — | Maryland |
| 43 | Elmer I. Griffith | 9 | Son | — | Maryland |
| 44 | Pauline M. Griffith | 7 | Daughter | — | Maryland |
| 45 | Margaret V. Griffith | 6 | Daughter | — | Maryland |
| 46 | Elsie E. Griffith | 3 | Daughter | — | Maryland |
| 47 | Della I. Griffith | 1 | Daughter | — | Maryland |
| 48 | Hugh O. Fisher | 44 | Head | Farmer | Maryland |
| 49 | Cora M. Fisher | 43 | Wife-H | — | Maryland |
| 50 | James Fisher | 20 | Son | Farm Laborer | Maryland |
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)