MF
Mary Frey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · York, Pennsylvania
Our Model Tree links this Mary Frey across the 1930 and 1940 US Censuses in York, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 9-person household.
Age 9
b. ~1921
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | York, Pennsylvania |
| Surname | Frey |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | York City Pt Off |
| Est. Birth Year | ~1921 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Etta Frey | Spouse | — | 43 | ~1887 |
| Julia Frey | Daughter | — | 12 | ~1918 |
| William Frey | Son | — | 8 | ~1922 |
| Mary Frey | Daughter | — | 9 | ~1921 |
| Margaret Frey | Daughter | — | 17 | ~1913 |
| Palmer Frey | Son | — | 11 | ~1919 |
| Francis Frey | Son | — | 2 | ~1928 |
| Allen Frey | Son | — | 14 | ~1916 |
| Levi Frey | Head | — | 50 | ~1880 |
Census Appearances
1930
York, Pennsylvania
Daughter, age 9
York, Pennsylvania · implied b. ~1921 — 9 household members
| Surname | Frey |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
York-County, Pennsylvania
Head, age 19
York-County, Pennsylvania · implied b. ~1921
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Fry |
| Given Name | Mary Ellen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | York City |
| 1935 Residence (County) | York |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Frey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frey
Daughter · 1930 · age 9 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Francis Frey
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Frey
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Palmer Frey
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Allen Frey
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Frey
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Frey
Sibling · 1930 · age 12
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 — York, Pennsylvania
Open full size
1930 US Federal Census — York, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2167:1055)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Petroff | 46 | Lodger | None | Poland |
| 52 | Margaret Hassler | 12 | Daughter | None | Pennsylvania |
| 53 | John Hassler | 10 | Son | None | Pennsylvania |
| 54 | Hattie Foust | 42 | Head | Laundress | Pennsylvania |
| 55 | Alton L. Parks | 25 | Head | Painter | Maryland |
| 56 | Myra M. Parks | 24 | Wife | None | Maryland |
| 57 | Kenneth G. Parks | 8 | Son | None | Maryland |
| 58 | Catherine Fry | 22 | Boarder | Dater | Pennsylvania |
| 59 | Grace Fry | 19 | Boarder | Inspector | Pennsylvania |
| 60 | Paul G. Plymer | 27 | Head | Machinist | Pennsylvania |
| 61 | Helen Plymer | 31 | Wife | None | Pennsylvania |
| 62 | Geraldine Plymer | 6 | Daughter | None | Pennsylvania |
| 63 | Elizabeth A. Plymer | 3 | Daughter | None | Pennsylvania |
| 64 | Catherine M. Zeigler | 75 | Head | None | Pennsylvania |
| 65 | Elizabeth Miller | 34 | Daughter | None | Pennsylvania |
| 66 | Ida M. Miller | 31 | Granddaughter | None | Pennsylvania |
| 67 | Ira M. Jr. Miller | 4 | Grandson | None | Pennsylvania |
| 68 | John B. Stegemeyer | 60 | Head | Carpenter | Pennsylvania |
| 69 | Ella M. Stegemeyer | 57 | Wife | None | Pennsylvania |
| 70 | George R. Stegemeyer | 17 | Son | None | Pennsylvania |
| 71 | Levi A. Frey | 50 | Head | Core Maker | Pennsylvania |
| 72 | Etta A. Frey | 43 | Wife | None | New York |
| 73 | Margaret Frey | 17 | Daughter | Matching | Pennsylvania |
| 74 | Allen E. Frey | 14 | Son | None | Pennsylvania |
| 75 | Julia M. Frey | 12 | Daughter | None | Pennsylvania |
| 76 | Palmer E. Frey | 11 | Son | None | Pennsylvania |
| 77 | Mary Ellen Frey THIS PERSON | 9 | Daughter | None | Pennsylvania |
| 78 | William G. Frey | 8 | Son | None | Pennsylvania |
| 79 | Francis L. Frey | 2 | Son | None | Pennsylvania |
| 80 | Cefner M. Frey | 45 | Head | Book-Keeper | Pennsylvania |
| 81 | Sarah E. Frey | 35 | Wife | None | Pennsylvania |
| 82 | Charles W. Messersmith | 45 | Head | Crane Runner | Pennsylvania |
| 83 | Theresa M. Messersmith | 44 | Wife | None | Pennsylvania |
| 84 | Catherine V. Messersmith | 25 | Daughter | None | Pennsylvania |
| 85 | Edna M. Messersmith | 22 | Daughter | None | Pennsylvania |
| 86 | Alvin E. Messersmith | 15 | Son | None | Pennsylvania |
| 87 | Margaret F. Messersmith | 13 | Daughter | None | Pennsylvania |
| 88 | Donald M. Messersmith | 10 | Son | None | Pennsylvania |
| 89 | Chauncey A. Houck | 30 | Son-in-law | Shoe-Maker | Pennsylvania |
| 90 | Rosella T. Ebersole | 29 | Sister-in-law | None | Pennsylvania |
| 91 | Robert J. Hayes | 43 | Head | Brakeman | Pennsylvania |
| 92 | Martha J. Hayes | 43 | Wife | None | Pennsylvania |
| 93 | Olive H. Hayes | 18 | Daughter | None | Pennsylvania |
| 94 | Thelma M. Hayes | 13 | Daughter | None | Pennsylvania |
| 95 | Robert H. Hayes | 9 | Son | None | Pennsylvania |
| 96 | Idella J. Hayes | 5 | Daughter | None | Pennsylvania |
| 97 | Fern L. Hayes | 2 | Daughter | None | Pennsylvania |
| 98 | Wiley L. Wolf | 42 | Head | Laborer | Pennsylvania |
| 99 | Margaret A. Wolf | 38 | Wife | None | Maryland |
| 100 | Edna R. Wolf | 17 | Daughter | Presser | Pennsylvania |
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)