MC
Mary Carney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mahoning-County, Ohio
Our Model Tree links this Mary Carney across the 1930 and 1940 US Censuses in Mahoning-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mahoning-County, Ohio |
| Surname | Carney |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (County) | Mahoning |
| Additional Details | |
| Highest Grade | No 6 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Youngstown |
| Est. Birth Year | ~1927 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eugene Carney | Son | — | 24 | ~1916 |
| Anna Carney | Spouse | — | 48 | ~1892 |
| James Carney | Son | — | 11 | ~1929 |
| Eugene Carney | Head | — | 48 | ~1892 |
| William Carney | Son | — | 19 | ~1921 |
| Eleanor Carney | Daughter | — | 22 | ~1918 |
| Dorothy Carney | Daughter | — | 22 | ~1918 |
| Dickie Carney | Son | — | 6 | ~1934 |
| Mary Carney | Daughter | — | 13 | ~1927 |
| Mildred Carney | Daughter | — | 20 | ~1920 |
| Rose Carney | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Mahoning, Ohio
Daughter, age 3
Mahoning, Ohio · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mahoning-County, Ohio
Daughter, age 13
Mahoning-County, Ohio · implied b. ~1927 — 11 household members
| Surname | Carney |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (County) | Mahoning |
| Highest Grade | No 6 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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
Daughter · 1940 · age 13 · b. ~1927 · Ohio
★ You are viewing this record
Sibling
Rose Carney
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Carney
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Carney
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Carney
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Carney
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dickie Carney
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Carney
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Carney
Sibling · 1940 · age 22
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 — Mahoning-County, Ohio
Open full size
1940 US Federal Census — Mahoning-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03268-00558)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patricia Menold | 2 | Daughter | — | Pennsylvania |
| 2 | William Blanchard | 54 | Head | Steel Mill | Pennsylvania |
| 3 | Margaret Blanchard | 54 | Wife | — | Pennsylvania |
| 4 | Kenneth Blanchard | 26 | Son | Steel Mill | Pennsylvania |
| 5 | Thomas Joshua | 26 | Head | Steel Mill | Ohio |
| 6 | Jennie Joshua | 22 | Wife | — | Ohio |
| 7 | Eugene Carney | 48 | Head | Steel Mill | Ohio |
| 8 | Anna Carney | 48 | Wife | — | Ohio |
| 9 | Eugene Carney | 24 | Son | Steel Mill | Pennsylvania |
| 10 | Eleanor Carney | 22 | Daughter | — | Pennsylvania |
| 11 | Dorothy Carney | 22 | Daughter | Hotel | Pennsylvania |
| 12 | Mildred Carney | 20 | Daughter | Restaurant | Ohio |
| 13 | William Carney | 19 | Son | — | Ohio |
| 14 | Mary Lou Carney THIS PERSON | 13 | Daughter | — | Ohio |
| 15 | Rose Carney | 10 | Daughter | — | Ohio |
| 16 | James Carney | 11 | Son | — | Ohio |
| 17 | Dickie Carney | 6 | Son | — | Ohio |
| 18 | Ralph Pesa | 45 | Head | Salesman | Italy |
| 19 | Ada Pesa | 42 | Wife | Saleswoman | Italy |
| 20 | Reynald Pesa | 18 | Son | — | Ohio |
| 21 | Eugene Pesa | 16 | Son | — | Ohio |
| 22 | Harry Pesa | 14 | Son | — | Ohio |
| 23 | Anna Pesa | 12 | Daughter | — | Ohio |
| 24 | John Doyle | 51 | Head | — | Ohio |
| 25 | Annie Doyle | 45 | Wife | — | Pennsylvania |
| 26 | John Doyle | 26 | Son | Realty Co | Ohio |
| 27 | Eleanor Doyle | 19 | Daughter | — | Ohio |
| 28 | Clara Doyle | 18 | Daughter | — | Ohio |
| 29 | Raymond Doyle | 16 | Son | — | Ohio |
| 30 | James Doyle | 12 | Son | — | Ohio |
| 31 | Elizabeth Doyle | 11 | Daughter | — | Ohio |
| 32 | James Doyle | 9 | Son | — | Ohio |
| 33 | Louise Doyle | 6 | Daughter | — | Ohio |
| 34 | Arthur Homes | 38 | Head | Steel Mill | Ohio |
| 35 | Margaret Homes | 37 | Wife | — | Ohio |
| 36 | Joann Homes | 15 | Daughter | — | Ohio |
| 37 | Richard Homes | 17 | Son | — | Ohio |
| 38 | William James | 35 | Head | Foreman | Wales |
| 39 | Mabel James | 36 | Wife | — | Ohio |
| 40 | Marjorie James | 11 | Daughter | — | Ohio |
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)