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Margaret Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this Margaret Mccarthy across the 1910, 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 4-person household.
Age 69
b. ~1871
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | McCarthy |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Plainfield |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Plainfield |
| Est. Birth Year | ~1871 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Julia Mccarthy | Daughter | — | 44 | ~1896 |
| Katherine Mccarthy | Daughter | — | 48 | ~1892 |
| Margaret Mccarthy | Head | — | 69 | ~1871 |
| Frank Mccarthy | Son | — | 41 | ~1899 |
Census Appearances
1910
Essex, New …
Spouse, age 40
Essex, New Jersey · implied b. ~1870 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 25 |
| Children Born | 7 |
| Children Living | 7 |
| Year of Immigration | 1880 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Essex, New …
Spouse, age 50
Essex, New Jersey · implied b. ~1870 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Margaret A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Essex, New …
Other, age 59
Essex, New Jersey · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Margaret A |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Union-County, New …
Head, age 69
Union-County, New Jersey · implied b. ~1871 — 4 household members
| Surname | McCarthy |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Plainfield |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Industry | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Margaret Mccarthy across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Mccarthy
Head · 1940 · age 69 · b. ~1871 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02387-00607)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Samuel D. Brown | 15 | Son | — | New Jersey |
| 42 | Ruth Brown | 11 | Daughter | — | New Jersey |
| 43 | William A. Sterious | 30 | Head | Butcher | New Jersey |
| 44 | Margaret Sterious | 28 | Wife | — | New York |
| 45 | Michael Nagy | 28 | Head | Machinist | New Jersey |
| 46 | Mary Nagy | 25 | Wife | Hat Operator | Maine |
| 47 | Shirley Ann Nagy | 6 | Daughter | — | New Jersey |
| 48 | Leonard Michael Nagy | 4 | Son | — | New Jersey |
| 49 | Anna Pantages | 22 | Sister-in-law | — | New Jersey |
| 50 | Andrew M. Pantages | 1 | Daughter | — | New Jersey |
| 51 | Calvin James | 28 | Head | General Catering | New Jersey |
| 52 | Janie James | 26 | Wife | Maid | N. Carolina |
| 53 | Elizabeth A. James | 4 | Daughter | — | New Jersey |
| 54 | George Johnson | 20 | Head | Odd Jobs | New Jersey |
| 55 | Elynore Johnson | 18 | Wife | — | New Jersey |
| 56 | Priscilla Lundin | 20 | Grand-daughter | — | New Jersey |
| 57 | Arthur Lundin | 22 | Son-in-law | Head Chef | Virginia |
| 58 | Tonya Lundin | 1 | Grand-daughter | — | New Jersey |
| 59 | Belle Ruffin | 40 | Roomer | Cook | So. Carolina |
| 60 | James Staton | 48 | Head | Painter | N. Carolina |
| 61 | Eveline Staton | 40 | Wife | Servant | N. Carolina |
| 62 | Annie Jones | 74 | Mother-in-law | — | N. Carolina |
| 63 | Israel Parnes | 65 | Head | — | Russia |
| 64 | Ida Parnes | 63 | Wife | — | Russia |
| 65 | Natalie Parnes | 21 | Head | Assembler | New Jersey |
| 66 | Jane Parnes | 18 | Wife | Starter | New Jersey |
| 67 | George Pierson | 51 | Head | Machinist | New Jersey |
| 68 | Minnie Pierson | 45 | Wife | Cook | No. Carolina |
| 69 | Bertha Pierson | 21 | Daughter | Laundress | New Jersey |
| 70 | Margaret Mccarthy THIS PERSON | 69 | Head | — | Ireland |
| 71 | Katherine Mccarthy | 48 | Daughter | — | New Jersey |
| 72 | Julia R. Mccarthy | 44 | Daughter | Clerk | New Jersey |
| 73 | Frank J. Mccarthy | 41 | Son | — | New Jersey |
| 74 | Hyman Handler | 59 | Head | — | Russia |
| 75 | Rachel Handler | 50 | Wife | — | Russia |
| 76 | Francis Maclennan | 32 | Head | Steno. | New York |
| 77 | Charles P. Kelly | 26 | Head | Ass'T. Machinist | New Jersey |
| 78 | Mary R. Kelly | 28 | Wife | Clerk | New Jersey |
| 79 | Robert W. Klein | 33 | Head | Asst. Acct. | Mass. |
| 80 | Gladys P. Klein | 37 | Wife | Secretary | 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)