RM
Robert Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Mccarthy across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McCarthy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| 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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Paul Mccarthy | Son | — | 19 | ~1921 |
| David Mccarthy | Son | — | 12 | ~1928 |
| Mary Mccarthy | Daughter | — | 5 | ~1935 |
| Robert Mccarthy | Son | — | 14 | ~1926 |
| Philip Mccarthy | Son | — | 20 | ~1920 |
| Philip Mccarthy | Head | — | 40 | ~1900 |
| Sarah Mccarthy | Spouse | — | 35 | ~1905 |
| Francis Mccarthy | Son | — | 18 | ~1922 |
| Rita Mccarthy | Daughter | — | 2 | ~1938 |
| Helen Mccarthy | Daughter | — | 4 | ~1936 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 4
Middlesex, Massachusetts · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Age at First Marriage | 4 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 14
Middlesex-County, Massachusetts · implied b. ~1926 — 10 household members
| Surname | McCarthy |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| 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 Robert Mccarthy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Mccarthy
Son · 1940 · age 14 · b. ~1926 · Massachusetts
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Sibling
Helen Mccarthy
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Mccarthy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mccarthy
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mccarthy
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Mccarthy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mccarthy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mccarthy
Sibling · 1940 · age 5
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
39 people indexed on this census page (nara:1940:m-t0627-01702-00057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Hickey | 14 | Son | — | Massachusetts |
| 2 | Marjorie A. Hickey | 10 | Daughter | — | Massachusetts |
| 3 | Ray Hickey | 8 | Son | — | Massachusetts |
| 4 | Michael Hickey | 43 | Brother | Fisherman | Canada-English |
| 5 | Philip Hickey | 25 | Brother | Fisherman | Canada-English |
| 6 | Harold Bean | 37 | Head | Auto Mechanic | Maine |
| 7 | Louise Bean | 39 | Wife | — | Maine |
| 8 | Ruth Bean | 17 | Daughter | — | Massachusetts |
| 9 | Charles Bean | 14 | Son | — | Massachusetts |
| 10 | Kathleen Bean | 8 | Daughter | — | Massachusetts |
| 11 | Mason Bean | 5 | Son | — | Massachusetts |
| 12 | Lida Campbell | 58 | Mother-in-law | — | Massachusetts |
| 13 | Michael Gropman | 52 | Head | Grocery Man | Armenia |
| 14 | Mary Gropman | 47 | Wife | — | Armenia |
| 15 | John Gropman | 16 | Son | — | Massachusetts |
| 16 | Jackie Gropman | 13 | Son | — | Massachusetts |
| 17 | Michael Gropman | 9 | Son | — | Massachusetts |
| 18 | Venus Gropman | 7 | Daughter | — | Massachusetts |
| 19 | Frank Risolidi | 37 | Head | Auto Mechanic | Italy |
| 20 | Alice Risolidi | 31 | Wife | Food Checker | Massachusetts |
| 21 | Philip Mccarthy | 40 | Head | Painter | Massachusetts |
| 22 | Sarah Mccarthy | 35 | Wife | — | Massachusetts |
| 23 | Philip Mccarthy | 20 | Son | Painter | Massachusetts |
| 24 | Paul Mccarthy | 19 | Son | — | Massachusetts |
| 25 | Francis Mccarthy | 18 | Son | — | Massachusetts |
| 26 | Robert Mccarthy THIS PERSON | 14 | Son | — | Massachusetts |
| 27 | David Mccarthy | 12 | Son | — | Massachusetts |
| 28 | Mary Mccarthy | 5 | Daughter | — | Massachusetts |
| 29 | Helen Mccarthy | 4 | Daughter | — | Massachusetts |
| 30 | Rita Mccarthy | 2 | Daughter | — | Massachusetts |
| 31 | Walter Moran | 36 | Head | Salesman | Massachusetts |
| 32 | Mabel Moran | 33 | Wife | — | Canada-English |
| 33 | Louise Moran | 12 | Daughter | — | Massachusetts |
| 34 | Joan Moran | 10 | Daughter | — | Massachusetts |
| 35 | Patricia Moran | 8 | Daughter | — | Massachusetts |
| 36 | Patricia Moran | 6 | Daughter | — | Massachusetts |
| 37 | John Hurley | 57 | Head | Salesman | Massachusetts |
| 38 | Josephine Hurley | 57 | Wife | — | New York |
| 39 | Marie Bushway | 40 | Lodger | Stenographer | 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)