MF
Mary Frederick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lackawanna-County, Pennsylvania
Our Model Tree links this Mary Frederick across the 1930 and 1940 US Censuses in Lackawanna-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lackawanna-County, Pennsylvania |
| Surname | Frederick |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Moosic Borough |
| 1935 Residence (County) | Lackawanna |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Moosic Borough |
| Est. Birth Year | ~1928 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Laura Frederick | Daughter | — | 7 | ~1933 |
| Alexander Frederick | Head | — | 34 | ~1906 |
| Leona Frederick | Spouse | — | 32 | ~1908 |
| Earl Frederick | Son | — | 6 | ~1934 |
| Martha Frederick | Daughter | — | 14 | ~1926 |
| Mary Frederick | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Lackawanna, Pennsylvania
Daughter, age 2
Lackawanna, Pennsylvania · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederick |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lackawanna-County, Pennsylvania
Daughter, age 12
Lackawanna-County, Pennsylvania · implied b. ~1928 — 6 household members
| Surname | Frederick |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Moosic Borough |
| 1935 Residence (County) | Lackawanna |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Frederick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frederick
Daughter · 1940 · age 12 · b. ~1928 · Pennsylvania
★ You are viewing this record
Sibling
Earl Frederick
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Frederick
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Frederick
Sibling · 1940 · age 7
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 — Lackawanna-County, Pennsylvania
Open full size
1940 US Federal Census — Lackawanna-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03525-00566)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Gidula | 20 | Daughter | — | Pennsylvania |
| 2 | Giorgia Gidula | 16 | Daughter | — | Pennsylvania |
| 3 | Mary Gidula | 11 | Daughter | — | Pennsylvania |
| 4 | Nicholas Gidula | 8 | Son | — | Pennsylvania |
| 5 | Nancy Ann Gidula | 6 | Daughter | — | Pennsylvania |
| 7 | John Benson | 33 | Head | Laborer | England |
| 8 | Ruth Benson | 27 | Wife | — | Pennsylvania |
| 9 | Reynold Benson | 9 | Son | — | Pennsylvania |
| 10 | Thomas Benson | 4 | Son | — | Pennsylvania |
| 11 | Jimmie Benson | 2 | Son | — | Pennsylvania |
| 12 | James Cuffrey | 74 | Head | — | Pennsylvania |
| 13 | Emma Cuffrey | 72 | Wife | — | Pennsylvania |
| 14 | Anthony Koveleski | 29 | Head | Proprietor | Pennsylvania |
| 15 | Anna Koveleski | 29 | Wife | Sales Clerk | Pennsylvania |
| 16 | Anthony Jr Koveleski | 7 | Son | — | Pennsylvania |
| 17 | Ann Marie Koveleski | 4 | Daughter | — | Pennsylvania |
| 18 | Samuel Kevern | 48 | Head | Machinist | England |
| 19 | Amelia Kevern | 40 | Wife | — | England |
| 20 | David Schingle | 50 | Head | Fireman | Pennsylvania |
| 21 | Killian Schingle | 48 | Wife | — | Pennsylvania |
| 22 | David Schingle | 25 | Son | Laborer | Pennsylvania |
| 23 | Edith Schingle | 24 | Daughter | Sales Clerk | Pennsylvania |
| 24 | Edward O'Malley | 39 | Head | Motorman | Pennsylvania |
| 25 | Mary O'Malley | 35 | Wife | — | Pennsylvania |
| 26 | Mary O'Malley | 11 | Daughter | — | Pennsylvania |
| 27 | Joseph O'Malley | 9 | Son | — | Pennsylvania |
| 28 | James O'Malley | 5 | Son | — | Pennsylvania |
| 29 | Edward O'Malley | 2 | Son | — | Pennsylvania |
| 30 | Alexander Frederick | 34 | Head | Laborer | Pennsylvania |
| 31 | Leona Frederick | 32 | Wife | — | Pennsylvania |
| 32 | Martha Frederick | 14 | Daughter | — | Pennsylvania |
| 33 | Mary Frederick THIS PERSON | 12 | Daughter | — | Pennsylvania |
| 34 | Laura Frederick | 7 | Daughter | — | Pennsylvania |
| 35 | Earl Frederick | 6 | Son | — | Pennsylvania |
| 36 | Harry Miller | 55 | Head | Brakeman | Pennsylvania |
| 37 | Bessie Miller | 57 | Wife | — | Pennsylvania |
| 38 | Charles Berkshire | 15 | Lodger | — | Pennsylvania |
| 39 | William Drake | 49 | Head | Electrician | Pennsylvania |
| 40 | Ethel Drake | 50 | Wife | — | Pennsylvania |
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)