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Mary Mccarty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Mccarty across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McCarty |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Newton |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Rubber Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | City Of Newton |
| Est. Birth Year | ~1916 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Mccarty | Daughter | — | 21 | ~1919 |
| Mary Mccarty | Daughter | — | 24 | ~1916 |
| Theresa Mccarty | Daughter | — | 14 | ~1926 |
| Margaret Mccarty | Daughter | — | 16 | ~1924 |
| Timothy Mccarty | Head | — | 55 | ~1885 |
| Timothy Mccarty | Son | — | 18 | ~1922 |
| Joseph Mccarty | Son | — | 23 | ~1917 |
| Matilda Mccarty | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 14
Middlesex, Massachusetts · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| 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
Middlesex-County, Massachusetts
Daughter, age 24
Middlesex-County, Massachusetts · implied b. ~1916 — 8 household members
| Surname | McCarty |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Newton |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | Rubber Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| 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 Mccarty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mccarty
Daughter · 1940 · age 24 · b. ~1916 · Massachusetts
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Sibling
Timothy Mccarty
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mccarty
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mccarty
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Mccarty
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mccarty
Sibling · 1940 · age 21
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01616-00414)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lawrence Whalen | 52 | Head | Installor | Canada |
| 42 | Rena Whalen | 51 | Wife | — | Canada |
| 43 | William Whalen | 27 | Son | Clerk | Massachusetts |
| 44 | John Whalen | 23 | Son | Driver | Massachusetts |
| 45 | Georgina Whalen | 21 | Daughter | Clerk | Massachusetts |
| 46 | Edward Whalen | 17 | Son | Attending School | Massachusetts |
| 47 | Vincent Whalen | 15 | Son | Attending School | Massachusetts |
| 48 | Donald Whalen | 14 | Son | Attending School | Massachusetts |
| 49 | Theresa Whalen | 11 | Daughter | Attending School | Massachusetts |
| 50 | Thomas Mcneil | 38 | Head | Salesman | Canada |
| 51 | Edith Mcneil | 37 | Wife | — | Massachusetts |
| 52 | Douglas Mcneil | 15 | Son | Attending School | Massachusetts |
| 53 | Marjorie Mcneil | 15 | Daughter | Attending School | Massachusetts |
| 54 | Lucille Mcneil | 11 | Daughter | Attending School | Massachusetts |
| 55 | Allen Mcneil | 2 | Son | — | Massachusetts |
| 56 | Glen Mcneil | 1 | Son | — | Massachusetts |
| 57 | Anton Hmania | 44 | Head | Foreman | Palestine |
| 58 | Louise Hmania | 43 | Wife | — | Massachusetts |
| 59 | Gertrude Maccallum | 40 | Sister-in-law | Teacher | Massachusetts |
| 60 | Harry G. Riddle | 58 | Head | Painter | England |
| 61 | Elizabeth Riddle | 39 | Wife | — | England |
| 62 | Charles Riddle | 16 | Son | Attending School | Massachusetts |
| 63 | James Riddle | 14 | Son | Attending School | Massachusetts |
| 64 | Elizabeth Riddle | 12 | Daughter | Attending School | Massachusetts |
| 65 | Alice Riddle | 11 | Daughter | Attending School | Massachusetts |
| 66 | Dorothy Riddle | 8 | Daughter | Attending School | Massachusetts |
| 67 | Ruth Riddle | 6 | Daughter | Attending School | Massachusetts |
| 68 | Harry Riddle | 5 | Son | — | Massachusetts |
| 69 | Annie M. Thomas | 54 | Head | — | Ireland |
| 70 | Edmund Thomas | 40 | Son | Plumber | Massachusetts |
| 71 | Rose Ann Thomas | 22 | Daughter | Operator | Massachusetts |
| 72 | Leo Thomas | 14 | Son | Attending School | Massachusetts |
| 73 | Timothy S. Mccarty | 55 | Head | Operator | Massachusetts |
| 74 | Matilda Mccarty | 52 | Wife | — | Ireland |
| 75 | Mary J. Mccarty THIS PERSON | 24 | Daughter | Laborer | Massachusetts |
| 76 | Joseph Mccarty | 23 | Son | — | Massachusetts |
| 77 | Elizabeth Mccarty | 21 | Daughter | Operator | Massachusetts |
| 78 | Timothy Mccarty | 18 | Son | Shipper | Massachusetts |
| 79 | Margaret Mccarty | 16 | Daughter | Attending School | Massachusetts |
| 80 | Theresa Mccarty | 14 | Daughter | Attending School | Massachusetts |
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)