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Mary Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Mccarthy across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1865), then head of a 4-person household.
Age 75
b. ~1865
Female
Spouse
Born: Rhode Island
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McCarthy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Medford City |
| Est. Birth Year | ~1865 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Celia Harold | Daughter | — | 40 | ~1900 |
| James Mccarthy | Head | — | 75 | ~1865 |
| Natalie Harold | Other | — | 15 | ~1925 |
| Mary Mccarthy | Spouse | — | 75 | ~1865 |
Census Appearances
1920
Middlesex, Massachusetts
Spouse, age 55
Middlesex, Massachusetts · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Mary G. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Middlesex, Massachusetts
Spouse, age 65
Middlesex, Massachusetts · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Age at First Marriage | 22 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Middlesex-County, Massachusetts
Spouse, age 75
Middlesex-County, Massachusetts · implied b. ~1865 — 4 household members
| Surname | McCarthy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mccarthy
Spouse · 1940 · age 75 · b. ~1865 · Massachusetts
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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
38 people indexed on this census page (nara:1940:m-t0627-01611-00337)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Susan Newman | 35 | Daughter | Telephone Operator | Mass |
| 2 | Ann Marie Keenan | 14 | Granddaughter | — | Mass |
| 3 | Marguerite L. Keenan | 12 | Granddaughter | — | Mass |
| 4 | John W. Keenan | 12 | Grandson | — | Mass |
| 6 | Nicholas Crivello | 62 | Head | Laborer | Italy |
| 7 | Mary R. Crivello | 52 | Wife | — | Italy |
| 8 | Catherine M. Clark | 67 | Head | — | Mass |
| 9 | Belle I. Clark | 74 | Sister | — | Mass |
| 10 | Jacob Kouyoumjian | 48 | Head | Clerk | Armenia |
| 11 | Esther Kouyoumjian | 35 | Wife | — | Armenia |
| 12 | James Mccarthy | 75 | Head | Laborer | Michigan |
| 13 | Mary E. Mccarthy THIS PERSON | 75 | Wife | — | Rhode Island |
| 14 | Celia R. Harold | 40 | Daughter | Comptometer Operator | Mass |
| 15 | Natalie Harold | 15 | Granddaughter | — | Mass |
| 16 | Stephen C. Adams | 18 | Head | Case Operator | Mass |
| 17 | Edward H. Saalfield | 38 | Son-in-law | Stationary Engineer | New York |
| 18 | Esther M. Saalfield | 35 | Daughter | — | Mass |
| 19 | Edward H. Saalfield | 10 | Grandson | — | Mass |
| 20 | Stephen C. Saalfield | 9 | Grandson | — | Mass |
| 21 | David L. Saalfield | 5 | Grandson | — | Mass |
| 22 | Fred B. Skillin | 51 | Head | Civil Engineer | Mass |
| 23 | Anna B. Skillin | 46 | Wife | — | Mass |
| 24 | Jeanne R. Skillin | 13 | Daughter | — | Mass |
| 25 | Anna L. Skillin | 11 | Daughter | — | Mass |
| 26 | Dorothy R. Skillin | 9 | Daughter | — | New Jersey |
| 27 | Arlene E. Skillin | 7 | Daughter | — | Connecticut |
| 28 | Lois M. Skillin | 2 | Daughter | — | Mass |
| 29 | Robert J. Hurley | 43 | Head | Postal Clerk | Mass |
| 30 | Marguerite E. Hurley | 37 | Wife | — | Mass |
| 31 | Robert J. Hurley | 12 | Son | — | Mass |
| 32 | Ruth E. Hurley | 10 | Daughter | — | Mass |
| 33 | Richard F. Hurley | 5 | Son | — | Mass |
| 35 | Edith T. Cummings | 61 | Head | — | Mass |
| 36 | Robert P. Cummings | 23 | Son | Salesman | Mass |
| 37 | Blanche S. Cumming | 62 | Head | — | Mass |
| 38 | Charles W. Laverty | 48 | Head | Sheet Metal Worker | Mass |
| 39 | Esther A. Laverty | 46 | Wife | — | Mass |
| 40 | Charles A. Laverty | 18 | Son | Carpenter | Mass |
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)