MC
Mary Carney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Carney across the 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 10-person household.
Age 47
b. ~1893
Female
Head
Born: New Jersey
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | New Jersey |
| 1935 Residence (City) | Lawrence city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1893 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Eugene Carney | Son | — | 28 | ~1912 |
| Martin Carney | Son | — | 19 | ~1921 |
| Leo Carney | Son | — | 7 | ~1933 |
| Elizabeth Carney | Daughter | — | 18 | ~1922 |
| James Carney | Son | — | 14 | ~1926 |
| Jeremiah Carney | Son | — | 15 | ~1925 |
| Lawrence Carney | Son | — | 9 | ~1931 |
| Andrew Carney | Son | — | 12 | ~1928 |
| Mary Carney | Head | — | 47 | ~1893 |
| Daniel Carney | Son | — | 16 | ~1924 |
Census Appearances
1930
Essex, Massachusetts
Spouse, age 37
Essex, Massachusetts · implied b. ~1893 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 16 |
| Father's Birthplace | England |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, Massachusetts
Head, age 47
Essex-County, Massachusetts · implied b. ~1893 — 10 household members
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | New Jersey |
| 1935 Residence (City) | Lawrence city |
| 1935 Residence (County) | Essex |
| Industry | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Carney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carney
Head · 1940 · age 47 · b. ~1893 · 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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01584-00081)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leo Landry | 32 | brother | Cutter | Massachusetts |
| 42 | Eugene Guilmette | 52 | head | Gray Room | New York |
| 43 | Blondie Guilmette | 52 | wife | — | Canada French |
| 44 | Lucy Jolivert | 29 | boarder | Shoe Room | Massachusetts |
| 45 | Vivian Jolivert | 20 | boarder | Stitcher | Massachusetts |
| 46 | George Woodes | 48 | roomer | Engineer | New Hampshire |
| 47 | John Wante | 44 | head | Weaver | France |
| 48 | Blanche Wante | 38 | wife | Burler | Massachusetts |
| 49 | John Wante | 16 | son | — | Massachusetts |
| 50 | Roland Wante | 12 | son | — | Massachusetts |
| 51 | Lorraine Wante | 3 | daughter | — | Massachusetts |
| 52 | Joseph Ward | 29 | head | Shipper | England |
| 53 | Mary Ward | 26 | wife | Salesgirl | Massachusetts |
| 54 | Ida Vaillancourt | 47 | head | Winder | Canada French |
| 55 | Alabie Michaud | 23 | roomer | Inspecting | Maine |
| 56 | Karal Karsok | 74 | head | — | Italy |
| 57 | Mary Karsok | 60 | wife | — | Italy |
| 58 | Mary Carney THIS PERSON | 47 | head | — | New Jersey |
| 59 | Eugene Carney | 28 | son | Packer | Massachusetts |
| 60 | Martin Carney | 19 | son | New Worker | Massachusetts |
| 61 | Elizabeth Carney | 18 | daughter | New Worker | Massachusetts |
| 62 | Daniel Carney | 16 | son | — | Massachusetts |
| 63 | Jeremiah Carney | 15 | son | — | Massachusetts |
| 64 | James Carney | 14 | son | — | Massachusetts |
| 65 | Andrew Carney | 12 | son | — | Massachusetts |
| 66 | Lawrence Carney | 9 | son | — | Massachusetts |
| 67 | Leo Carney | 7 | son | — | Massachusetts |
| 68 | Ali Potvin | 72 | head | Yardman | Canada French |
| 69 | Mary E. Potvin | 67 | wife | — | Massachusetts |
| 70 | Laura Potvin | 39 | daughter | — | Massachusetts |
| 71 | Grace Potvin | 14 | daughter | — | Massachusetts |
| 72 | Leonard Potvin | 13 | grandson | — | Massachusetts |
| 73 | Joseph Potvin | 7 | grandson | — | Massachusetts |
| 74 | Marie Drouin | 58 | head | — | Canada French |
| 75 | Charles Drouin | 28 | son | Cutter | Massachusetts |
| 76 | Ellen Drouin | 26 | daughter | Clerk | Massachusetts |
| 77 | William Loggins | 49 | head | Filler | Massachusetts |
| 78 | Flora Loggins | 46 | wife | Drawer In | Massachusetts |
| 79 | Muriel Loggins | 26 | daughter | Drawer In | Massachusetts |
| 80 | Harry Blais | 40 | head | Truck Driver | Canada French |
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)