JM
James Mccarthy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this James Mccarthy across the 1920, 1930 and 1940 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Martha — first a son (b.~1916), then head of a 9-person household.
Age 14
b. ~1916
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | McCarthy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lawrence City |
| 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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mccarthy | Daughter | — | 2 | ~1928 |
| Marion Mccarthy | Daughter | — | 11 | ~1919 |
| Mildred Mccarthy | Daughter | — | 6 | ~1924 |
| George Mccarthy | Head | — | 35 | ~1895 |
| Margaret Mccarthy | Other | — | 35 | ~1895 |
| Francis Mccarthy | Son | — | 4 | ~1926 |
| George Mccarthy | Son | — | 16 | ~1914 |
| James Mccarthy | Son | — | 14 | ~1916 |
| Charles Mccarthy | Son | — | 7 | ~1923 |
Census Appearances
1920
Essex, Massachusetts
Son, age 4
Essex, Massachusetts · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 14
Essex, Massachusetts · implied b. ~1916 — 9 household members
| Surname | McCarthy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 24
Essex-County, Massachusetts · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Carthy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Peabody City |
| 1935 Residence (County) | Essex |
| Hours Worked | 0 |
| 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 James Mccarthy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mc Carthy (~0.92 confidence) and mother Martha Mc Carthy (~0.92 confidence) and father George Mccarthy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mc Carthy
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Martha Mc Carthy
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
George Mccarthy
b. ~1895
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Mccarthy
Son · 1930 · age 14 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Charles Mccarthy
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mccarthy
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mccarthy
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Mccarthy
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mccarthy
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Mccarthy
Sibling · 1930 · age 11
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 — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel898:0556)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Omer Levesque | 49 | Head | Painter | Canada-French |
| 52 | Victoria Levesque | 36 | Wife-H | — | Massachusetts |
| 53 | Alphee Levesque | 23 | Son | Woodworker | Massachusetts |
| 54 | Ida Levesque | 21 | Daughter | Spinner | Massachusetts |
| 55 | Lena Levesque | 16 | Daughter | Governess | Massachusetts |
| 56 | Regina Levesque | 15 | Daughter | — | Massachusetts |
| 57 | Henry Levesque | 11 | Son | — | Massachusetts |
| 58 | Yvonne Levesque | 10 | Daughter | — | Massachusetts |
| 59 | Rene Levesque | 3 | Son | — | Massachusetts |
| 60 | Alice Mailloux | 15 | Step dau | — | Massachusetts |
| 61 | George Mccarthy | 35 | Head | Carpenter | Massachusetts |
| 62 | Margaret Mccarthy | 35 | Wife-H | — | Massachusetts |
| 63 | George Jr. Mccarthy | 16 | Son | — | Massachusetts |
| 64 | James Mccarthy THIS PERSON | 14 | Son | — | Massachusetts |
| 65 | Marion Mccarthy | 11 | Daughter | — | Massachusetts |
| 66 | Charles Mccarthy | 7 | Son | — | Massachusetts |
| 67 | Mildred Mccarthy | 6 | Daughter | — | Massachusetts |
| 68 | Francis Mccarthy | 4 | Son | — | Massachusetts |
| 69 | Margaret Mccarthy | 2 | Daughter | — | Massachusetts |
| 70 | Raymond Laco | 38 | Head | Chauffeur | Massachusetts |
| 71 | Gertrude Laco | 38 | Wife-H | — | Massachusetts |
| 72 | Raymond Laco | 16 | Son | Laborer | Massachusetts |
| 73 | Ruby Laco | 14 | Daughter | — | Massachusetts |
| 74 | Ruth Laco | 13 | Daughter | — | Massachusetts |
| 75 | William Laco | 11 | Son | — | Massachusetts |
| 76 | Beatrice Laco | 10 | Daughter | — | Massachusetts |
| 77 | Mary Laco | 8 | Daughter | — | New Hampshire |
| 78 | Ralph Laco | 7 | Son | — | Massachusetts |
| 79 | Robert Laco | 5 | Son | — | New Hampshire |
| 80 | Arthur Laco | 3 | Son | — | New Hampshire |
| 81 | Gertrude Laco | 3 | Daughter | — | New Hampshire |
| 82 | Francis Laco | 1 | Son | — | Massachusetts |
| 83 | Lillian Laco | 0 | Daughter | — | Massachusetts |
| 84 | Albert Gagnon | 29 | Head | Paper Maker | New Hampshire |
| 85 | Mary J. Gagnon | 28 | Wife-H | Housework | Massachusetts |
| 86 | Albert Jr. Gagnon | 6 | Son | — | Massachusetts |
| 87 | Francis Mcguigan | 34 | Head | Machinist | Massachusetts |
| 88 | Edith Mcguigan | 33 | Wife-H | — | Massachusetts |
| 89 | Francis Mcguigan | 9 | Son | — | Massachusetts |
| 90 | Evelyn Mcguigan | 4 | Daughter | — | Massachusetts |
| 91 | John J. Burke | 58 | Head | Dyer | Irish Free State |
| 92 | Ellen Burke | 58 | Wife-H | — | Irish Free State |
| 93 | Mary Burke | 24 | Daughter | — | Massachusetts |
| 94 | John J. Burke | 23 | Son | Engraver | Massachusetts |
| 95 | John J. Murphy | 30 | Boarder | Filling Carrier | Massachusetts |
| 96 | — | None | — | — | — |
| 97 | John W. Bletcher | 65 | Head | — | England |
| 98 | Elizabeth N. Bletcher | 64 | Wife-H | — | England |
| 99 | Harry Bletcher | 21 | Son | Clerk | Massachusetts |
| 100 | — | None | — | — | — |
Pedigree Summary
James + 6 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)