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Mary Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Northumberland-County, Pennsylvania
Our Model Tree links this Mary Mccarthy across the 1930 and 1940 US Censuses in Northumberland-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Northumberland-County, Pennsylvania |
| Surname | McCarthy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Columbia |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Snydertown Borough |
| Est. Birth Year | ~1926 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mccarthy | Daughter | — | 14 | ~1926 |
| Patricia Mccarthy | Daughter | — | 4 | ~1936 |
| Winifred Mccarthy | Daughter | — | 13 | ~1927 |
| John Mccarthy | Head | — | 35 | ~1905 |
| Franklin Mccarthy | Son | — | 7 | ~1933 |
| Donald Mccarthy | Son | — | 11 | ~1929 |
| John Mccarthy | Son | — | 15 | ~1925 |
| Robert Mccarthy | Son | — | 8 | ~1932 |
| James Mccarthy | Son | — | 9 | ~1931 |
| Myrtle Mccarthy | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Columbia, Pennsylvania
Daughter, age 4
Columbia, Pennsylvania · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northumberland-County, Pennsylvania
Daughter, age 14
Northumberland-County, Pennsylvania · implied b. ~1926 — 10 household members
| Surname | McCarthy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Columbia |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Penna |
| 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 Mccarthy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mccarthy
Daughter · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Robert Mccarthy
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Mccarthy
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mccarthy
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Franklin Mccarthy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Mccarthy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mccarthy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mccarthy
Sibling · 1940 · age 9
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 — Northumberland-County, Pennsylvania
Open full size
1940 US Federal Census — Northumberland-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03598-00195)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | June S. Lauver | 17 | Daughter | No | Pennsylvania |
| 42 | Jeanne L. Lauver | 1 | Granddaughter | 0 | Pennsylvania |
| 43 | Charles R. Lauver | 0 | Son | 0 | Pennsylvania |
| 44 | Clarence A. Hill | 35 | Head | Laborer | Pennsylvania |
| 45 | Francis A. Hill | 24 | Wife | Silk Winder | Pennsylvania |
| 46 | Clarence H. Hill | 9 | Son | — | Pennsylvania |
| 47 | Orvel M. Hill | 8 | Son | — | Pennsylvania |
| 48 | Jackie A. Hill | 3 | Son | — | Pennsylvania |
| 49 | John Jr. Mccarthy | 35 | Head | Foreman | Pennsylvania |
| 50 | Myrtle E. Mccarthy | 39 | Wife | — | New Jersey |
| 51 | John Iii Mccarthy | 15 | Son | Farm Hand | Pennsylvania |
| 52 | Mary Mccarthy THIS PERSON | 14 | Daughter | — | Pennsylvania |
| 53 | Winifred Mccarthy | 13 | Daughter | — | Pennsylvania |
| 54 | Donald Mccarthy | 11 | Son | — | Pennsylvania |
| 55 | James Mccarthy | 9 | Son | — | Pennsylvania |
| 56 | Robert Mccarthy | 8 | Son | — | Pennsylvania |
| 57 | Franklin Mccarthy | 7 | Son | — | Pennsylvania |
| 58 | Patricia Mccarthy | 4 | Daughter | — | Pennsylvania |
| 59 | Michael Deska | 35 | Head | Miner | Pennsylvania |
| 60 | Henrietta Deska | 25 | Wife | Stenographer | New York |
| 61 | Lorraine G. Deska | 5 | Daughter | — | New Jersey |
| 62 | Richard M. Deska | 3 | Son | 0 | Pennsylvania |
| 63 | James Penwell | 60 | Head | Miner | Pennsylvania |
| 64 | Wellington E. Snyder | 35 | Head | Miner | Pennsylvania |
| 65 | Ellen S. Snyder | 31 | Wife | — | Pennsylvania |
| 66 | Irene Snyder | 11 | Daughter | — | Pennsylvania |
| 67 | Florence Snyder | 10 | Daughter | — | Pennsylvania |
| 68 | Fred Snyder | 9 | Son | — | Pennsylvania |
| 69 | Betty J. Snyder | 2 | Daughter | 0 | Pennsylvania |
| 70 | Edwin Dingman | 73 | Head | Mail Carrier | New York |
| 71 | Clara S. Dingman | 77 | Wife | — | Pennsylvania |
| 72 | John B. Reeder | 48 | Head | Laborer | Pennsylvania |
| 73 | Edna B. Reeder | 48 | Wife | — | Pennsylvania |
| 74 | Kenneth Reeder | 26 | Son | Laborer | Pennsylvania |
| 75 | Rachel Reeder | 18 | Daughter | — | Pennsylvania |
| 76 | Robert Reeder | 15 | Son | New Worker | Pennsylvania |
| 77 | Ruth Reeder | 13 | Daughter | — | Pennsylvania |
| 78 | Beulah Reeder | 5 | Daughter | — | Pennsylvania |
| 79 | Charles Kaseman | 58 | Head | Laborer | Pennsylvania |
| 80 | Mary Kaseman | 54 | 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)