JM
John Mccarty — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Mccarty across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1910), then head of a 10-person household.
Age 20
b. ~1910
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | McCarty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada-French |
| Mother's Birthplace | Canada-English |
| Additional Details | |
| Occupation | Laborer |
| Industry | Odd jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Reading Town Part Of |
| Est. Birth Year | ~1910 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Frances Mccarty | Daughter | — | 2 | ~1928 |
| Helen Mccarty | Daughter | — | 9 | ~1921 |
| Dorothy Mccarty | Daughter | — | 11 | ~1919 |
| Catherine Mccarty | Daughter | — | 14 | ~1916 |
| Mary Mccarty | Daughter | — | 18 | ~1912 |
| John Mccarty | Head | — | 52 | ~1878 |
| Catherine Mccarty | Other | — | 46 | ~1884 |
| John Mccarty | Son | — | 20 | ~1910 |
| Robert Mccarty | Son | — | 6 | ~1924 |
| William Mccarty | Son | — | 7 | ~1923 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 20
Middlesex, Massachusetts · implied b. ~1910 — 10 household members
| Surname | McCarty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada-French |
| Mother's Birthplace | Canada-English |
| Occupation | Laborer |
| Industry | Odd jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 30
Middlesex-County, Massachusetts · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Reading Town |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | V.D. Dept. City Dept |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | No 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 John Mccarty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mccarty
Son · 1930 · age 20 · b. ~1910 · Massachusetts
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Sibling
Mary Mccarty
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Mccarty
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mccarty
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mccarty
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mccarty
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mccarty
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mccarty
Sibling · 1930 · age 7
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel927:0364)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John J. Mccarty | 52 | Head | Watchman | Canada-French |
| 52 | Catherine G. Mccarty | 46 | Wife-H | — | Canada-English |
| 53 | John J. Mccarty THIS PERSON | 20 | Son | Laborer | Massachusetts |
| 54 | Mary Mccarty | 18 | Daughter | — | Massachusetts |
| 55 | Catherine Mccarty | 14 | Daughter | — | Massachusetts |
| 56 | Dorothy Mccarty | 11 | Daughter | — | Massachusetts |
| 57 | Helen Mccarty | 9 | Daughter | — | Massachusetts |
| 58 | William Mccarty | 7 | Son | — | Massachusetts |
| 59 | Robert Mccarty | 6 | Son | — | Massachusetts |
| 60 | Frances Mccarty | 2 | Daughter | — | Massachusetts |
| 61 | Mary L. Baker | 51 | Head-H | — | Massachusetts |
| 62 | Lois E. Baker | 21 | Daughter | Teacher | Massachusetts |
| 63 | Florence C. Baker | 20 | Daughter | Teacher | Massachusetts |
| 64 | Fred T. Greenwood | 48 | Head | Salesman | Canada-French |
| 65 | Anne L. Greenwood | 45 | Wife-H | — | Massachusetts |
| 66 | Annie Kelley | 71 | Mother-in-law | — | Northern Ireland |
| 67 | Robert Gunn | 52 | Head | Operator | Canada-English |
| 68 | Lottie R. Gunn | 54 | Wife-H | Teacher | Canada-English |
| 69 | Ernest R. Gunn | 24 | Son | Heating Engineer | Massachusetts |
| 70 | Celia E. Gunn | 23 | Daughter | — | Massachusetts |
| 71 | Franklin W. Zunshue | 21 | Step-son | — | Massachusetts |
| 72 | Leland (Al) Zunshue | 17 | Step-son | — | Massachusetts |
| 73 | Barbara F. Davis | 10 | Daughter | — | Massachusetts |
| 74 | William W. Davis | 6 | Son | — | Massachusetts |
| 75 | Thomas S. Spillane | 32 | Head | Service Man | Massachusetts |
| 76 | Gladys A. Spillane | 30 | Wife-H | — | Massachusetts |
| 77 | Gladys E. Spillane | 9 | Daughter | — | Massachusetts |
| 78 | Louis A. Parry | 42 | Head | Machinist | Massachusetts |
| 79 | Bertha E. Parry | 43 | Wife-H | — | Massachusetts |
| 80 | Charles E. Parry | 13 | Son | — | Massachusetts |
| 81 | Hazel E. Parry | 10 | Daughter | — | Massachusetts |
| 82 | Ralph J. Parry | 9 | Son | — | Massachusetts |
| 83 | Ruth B. Parry | 8 | Daughter | — | Massachusetts |
| 84 | Lucy A. Jakes | 85 | Grandmother | — | Massachusetts |
| 85 | Charles N. Wilson | 34 | Head | Proprietor-Dealer | Massachusetts |
| 86 | Agnes D. Wilson | 34 | Wife-H | — | Massachusetts |
| 87 | Leonore Wilson | 13 | Daughter | — | Massachusetts |
| 88 | Charles N. Wilson | 2 | Son | — | Massachusetts |
| 89 | Philip B. Wilson | 1 | Son | — | Massachusetts |
| 90 | Constance Wilson | 0 | Daughter | — | Massachusetts |
| 91 | Gordon J. Atkinson | 27 | Head | Salesman | Maine |
| 92 | Gladys Atkinson | 23 | Wife-H | Cashier | Massachusetts |
| 93 | Louis C. Raymond | 32 | Head | General Cleaner | Massachusetts |
| 94 | Olive F. Raymond | 28 | Wife-H | — | Massachusetts |
| 95 | Arthur L. Osborne | 35 | Son-in-law | Engineer | Canada-English |
| 96 | Marion A. Osborne | 28 | Granddaughter | — | Massachusetts |
| 97 | Arthur Osborne | 1 | Grandson | — | Massachusetts |
| 98 | Bertha O. Page | 9 | Granddaughter | — | Massachusetts |
| 99 | Arthur J. Duffey | 64 | Head | Case Worker | Massachusetts |
| 100 | Gertrude L. Duffey | 63 | Wife-H | — | Maine |
Related Census Records
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)