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Mary Mccarthy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Norfolk, Massachusetts
Our Model Tree links this Mary Mccarthy across the 1930 and 1940 US Censuses in Norfolk, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 12-person household.
Age 17
b. ~1913
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Norfolk, Massachusetts |
| Surname | McCarthy |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Brookline Town Part Of |
| 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 |
|---|---|---|---|---|
| Agnes Mccarthy | Daughter | — | 2 | ~1928 |
| Helen Mccarthy | Daughter | — | 16 | ~1914 |
| Anna Mccarthy | Daughter | — | 10 | ~1920 |
| Florence Mccarthy | Daughter | — | 4 | ~1926 |
| Mary Mccarthy | Daughter | — | 17 | ~1913 |
| Alice Mccarthy | Daughter | — | 6 | ~1924 |
| Margaret Mccarthy | Daughter | — | 14 | ~1916 |
| Michael Mccarthy | Head | — | 57 | ~1873 |
| John Mccarthy | Son | — | 9 | ~1921 |
| Edward Mccarthy | Son | — | 7 | ~1923 |
| Michael Mccarthy | Son | — | 12 | ~1918 |
| Mary Mccarthy | Spouse | — | 37 | ~1893 |
Census Appearances
1930
Norfolk, Massachusetts
Daughter, age 17
Norfolk, Massachusetts · implied b. ~1913 — 12 household members
| Surname | McCarthy |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Norfolk-County, Massachusetts
Spouse, age 28
Norfolk-County, Massachusetts · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarty |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Walpole |
| 1935 Residence (County) | Norfolk |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 · 1930 · age 17 · b. ~1913 · Massachusetts
★ You are viewing this record
Sibling
John Mccarthy
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Mccarthy
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Mccarthy
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mccarthy
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Mccarthy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mccarthy
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mccarthy
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mccarthy
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mccarthy
Sibling · 1930 · age 14
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 — Norfolk, Massachusetts
Open full size
1930 US Federal Census — Norfolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel933:0474)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | A. Conrad Pohl | 48 | Head | Chauffeur | Sweden |
| 2 | Margaret Pohl | 39 | Wife | — | Massachusetts |
| 3 | Mary Keigen | 75 | Head | — | Massachusetts |
| 4 | Lucy A. Keigen | 45 | Daughter | Buyer | Massachusetts |
| 5 | Mary Gordon | 68 | Head | — | Ireland |
| 6 | Patrick F. Regan | 43 | Head | Superintendent | Massachusetts |
| 7 | Mary E. Regan | 40 | Wife | — | Massachusetts |
| 8 | Adelaide Morgan | 62 | Head | — | Massachusetts |
| 9 | Emily G. Morgan | 60 | Sister | — | Massachusetts |
| 10 | Catherine Kalahane | 58 | Servant | Servant | Irish Free State |
| 11 | Marie Theurer | 60 | Head | — | Massachusetts |
| 12 | Emma M. Theurer | 54 | Sister | — | Massachusetts |
| 13 | Mary Carey | 29 | Servant | Servant | Irish Free State |
| 14 | Mary Finnegan | 24 | Servant | Servant | Irish Free State |
| 15 | Daniel Bloomfield | 39 | Head | Manager | New York |
| 16 | Dorothy Bloomfield | 27 | Wife | — | Massachusetts |
| 17 | Daniel Jr. Bloomfield | 4 | Son | — | Massachusetts |
| 18 | Alan M. Bloomfield | 2 | Son | — | Massachusetts |
| 19 | Mary Harrington | 21 | Servant | Servant | Irish Free State |
| 20 | Mary Shea | 22 | Servant | Servant | Irish Free State |
| 21 | Michael E. O'Neill | 67 | Head | — | Irish Free State |
| 22 | Elizabeth J. O'Neill | 44 | Daughter | Teacher | Massachusetts |
| 23 | Mary O'Neill | 89 | Mother | — | Irish Free State |
| 24 | Annie Freeman | 32 | Servant | Servant | Massachusetts |
| 25 | Alfred F. Nury | 58 | Head | Merchant | Massachusetts |
| 26 | Mary Nury | 57 | Wife | — | Massachusetts |
| 27 | Frank S. Watters | 37 | Brother-in-law | Salesman | Massachusetts |
| 28 | Mary E. Watters | 24 | Niece | — | Massachusetts |
| 29 | Alfred Watters | 3 | Gr-Nephew | — | Massachusetts |
| 30 | Robert Watters | 2 | Gr-Nephew | — | Massachusetts |
| 31 | Mary Brady | 20 | Servant | Servant | Newfoundland |
| 32 | Michael J. Mccarthy | 57 | Head | Merchant | Irish Free State |
| 33 | Mary A. Mccarthy | 37 | Wife | — | Irish Free State |
| 34 | Mary J. Mccarthy THIS PERSON | 17 | Daughter | — | Massachusetts |
| 35 | Helen Mccarthy | 16 | Daughter | — | Massachusetts |
| 36 | Margaret Mccarthy | 14 | Daughter | — | Massachusetts |
| 37 | Michael J. Mccarthy | 12 | Son | — | Massachusetts |
| 38 | Anna Mccarthy | 10 | Daughter | — | Massachusetts |
| 39 | John W. Mccarthy | 9 | Son | — | Massachusetts |
| 40 | Edward Mccarthy | 7 | Son | — | Massachusetts |
| 41 | Alice P. Mccarthy | 6 | Daughter | — | Massachusetts |
| 42 | Florence Mccarthy | 4 | Daughter | — | Massachusetts |
| 43 | Agnes R. Mccarthy | 2 | Daughter | — | Massachusetts |
| 44 | Meyer Cousins | 49 | Head | Manufacturer | Russia |
| 45 | Sarah Cousins | 46 | Wife | — | Russia |
| 46 | Isadore Cousins | 21 | Son | Clerk | Massachusetts |
| 47 | Samuel Cousins | 20 | Son | — | Massachusetts |
| 48 | Judith Cousins | 18 | Daughter | — | Massachusetts |
| 49 | Hannah Cousins | 16 | Daughter | — | Massachusetts |
| 50 | Sarah P. Cousins | 11 | Daughter | — | Massachusetts |
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)