MS
Mary Saunders — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Erie, Pennsylvania
Our Model Tree links this Mary Saunders across the 1930 and 1940 US Censuses in Erie, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 18-person household.
Age 15
b. ~1915
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Erie, Pennsylvania |
| Surname | Saunders |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Concord Township |
| Est. Birth Year | ~1915 |
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.
18 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Saunders | Daughter | — | 15 | ~1915 |
| Anna Saunders | Daughter | — | 6 | ~1924 |
| Amelia Saunders | Daughter | — | 11 | ~1919 |
| Thomas Grijlak | Son | — | 19 | ~1911 |
| Hattie Heppel | Spouse | — | 51 | ~1879 |
| Teresa Saunders | Spouse | — | 38 | ~1892 |
| Mary Grijlak | Daughter | — | 10 | ~1920 |
| Ward Heppel | Head | — | 55 | ~1875 |
| John Grijlak | Other | — | 60 | ~1870 |
| Frank Saunders | Other | — | 45 | ~1885 |
| Constantine Saunders | Son | — | 8 | ~1922 |
| Stanley Saunders | Son | — | 2 | ~1928 |
| August Heppel | Son | — | 21 | ~1909 |
| Katherine Grijlak | Daughter | — | 13 | ~1917 |
| Bobby Saunders | Son | — | 13 | ~1917 |
| Genevieve Grijlak | Spouse | — | 42 | ~1888 |
| Steve Grijlak | Son | — | 7 | ~1923 |
| Joseph Saunders | Son | — | 4 | ~1926 |
Census Appearances
1930
Erie, Pennsylvania
Daughter, age 15
Erie, Pennsylvania · implied b. ~1915 — 18 household members
| Surname | Saunders |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Erie-County, Pennsylvania
Daughter, age 25
Erie-County, Pennsylvania · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sander |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Concord Twp |
| 1935 Residence (County) | Erie |
| Occupation | Clerk |
| Industry | Drug Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 500 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Saunders across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Saunders
Daughter · 1930 · age 15 · b. ~1915 · Pennsylvania
★ You are viewing this record
Sibling
Steve Grijlak
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Constantine Saunders
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Saunders
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Amelia Saunders
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Saunders
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Grijlak
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bobby Saunders
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
August Heppel
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Grijlak
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Saunders
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Grijlak
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 — Erie, Pennsylvania
Open full size
1930 US Federal Census — Erie, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2035:0234)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin Anderson | 31 | Head | Farmer | Denmark |
| 2 | Hulda Anderson | 31 | Wife | None | Pennsylvania |
| 3 | Norman Anderson | 4 | Son | None | Pennsylvania |
| 4 | Jackson W. Giliam | 67 | Head | None | Tennessee |
| 5 | Lucy Giliam | 61 | Wife | None | England |
| 6 | James M. Colegrove | 77 | Head | Farmer | Pennsylvania |
| 7 | Emma Colegrove | 53 | Wife | None | Pennsylvania |
| 8 | Ernest Watson | 58 | Head | Farmer | Pennsylvania |
| 9 | Fanny Watson | 19 | Wife | Farm Laborer | Pennsylvania |
| 10 | Charles B. Colegrove | 62 | O | Farmer | Pennsylvania |
| 11 | Belle Colegrove | 41 | Wife | None | Pennsylvania |
| 12 | Florence Colegrove | 20 | Daughter | None | Pennsylvania |
| 13 | Jacob J. Royek | 48 | Head | Farmer | Poland |
| 14 | Teresa Royek | 38 | Wife | None | Poland |
| 15 | Anna Royek | 12 | Daughter | None | Ohio |
| 16 | Eleonora Royek | 11 | Daughter | None | Ohio |
| 17 | Stanley Royek | 9 | Son | None | Pennsylvania |
| 18 | Walter Royek | 8 | Son | None | Pennsylvania |
| 19 | Edward Royek | 7 | Son | None | Pennsylvania |
| 20 | Ward Heppel | 55 | Head | Farmer | Pennsylvania |
| 21 | Hattie Heppel | 51 | Wife | None | Pennsylvania |
| 22 | August W. Heppel | 21 | Son | Farm Laborer | Pennsylvania |
| 23 | Frank Saunders | 45 | O | Farmer | Poland |
| 24 | Teresa Saunders | 38 | Wife | None | Poland |
| 25 | Mary Saunders THIS PERSON | 15 | Daughter | None | Ohio |
| 26 | Bobby Saunders | 13 | Son | None | Ohio |
| 27 | Amelia Saunders | 11 | Daughter | None | Ohio |
| 28 | Constantine Saunders | 8 | Son | None | Pennsylvania |
| 29 | Anna Saunders | 6 | Daughter | None | Pennsylvania |
| 30 | Joseph Saunders | 4 | Son | None | Pennsylvania |
| 31 | Stanley Saunders | 2 | Son | None | Pennsylvania |
| 32 | John Grijlak | 60 | O | Laborer | Poland |
| 33 | Genevieve Grijlak | 42 | Wife | None | Poland |
| 34 | Thomas Grijlak | 19 | Son | Laborer | Pennsylvania |
| 35 | Katherine Grijlak | 13 | Daughter | None | Pennsylvania |
| 36 | Mary Grijlak | 10 | Daughter | None | Pennsylvania |
| 37 | Steve Grijlak | 7 | Son | None | Pennsylvania |
| 38 | Adam Shumsky | 43 | Head | Farmer | Poland |
| 39 | Katie Shumsky | 41 | Wife | None | Poland |
| 40 | Eddie Shumsky | 16 | Son | None | Pennsylvania |
| 41 | Mary Shumsky | 14 | Daughter | None | Pennsylvania |
| 42 | Eva Shumsky | 12 | Daughter | None | Pennsylvania |
| 43 | Veronica Shumsky | 10 | Daughter | None | Pennsylvania |
| 44 | Anna Shumsky | 8 | Daughter | None | Pennsylvania |
| 45 | Elizabeth Shumsky | 4 | Daughter | None | Pennsylvania |
| 46 | Leon Shumsky | 3 | Son | None | Pennsylvania |
| 47 | Anna Melsnek | 35 | Head | None | Czecho Slovakia |
| 48 | Margaret Melsnek | 18 | Daughter | None | Pennsylvania |
| 49 | Mary Melsnek | 17 | Daughter | None | Pennsylvania |
| 50 | John Melsnek | 15 | Son | None | 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)