MC
Mary Carney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hampden-County, Massachusetts
Our Model Tree links this Mary Carney across the 1930 and 1940 US Censuses in Hampden-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 6-person household.
Age 19
b. ~1921
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hampden-County, Massachusetts |
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Hampden |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Springfield |
| Est. Birth Year | ~1921 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Carney | Head | — | 43 | ~1897 |
| Frances Carney | Son | — | 12 | ~1928 |
| Helen Carney | Daughter | — | 9 | ~1931 |
| Joseph Carney | Son | — | 14 | ~1926 |
| Mary Carney | Spouse | — | 42 | ~1898 |
| Mary Carney | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Hampden, Massachusetts
Daughter, age 9
Hampden, Massachusetts · implied b. ~1921 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Hampden-County, Massachusetts
Daughter, age 19
Hampden-County, Massachusetts · implied b. ~1921 — 6 household members
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Hampden |
| 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 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 19 · b. ~1921 · Massachusetts
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Sibling
Frances Carney
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Carney
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Carney
Sibling · 1940 · age 14
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 — Hampden-County, Massachusetts
Open full size
1940 US Federal Census — Hampden-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01706-00385)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Stuart Gundalin | 27 | Head | — | Massachusetts |
| 42 | Annie Gundalin | 25 | Wife | — | Massachusetts |
| 43 | Shirley Gundalin | 5 | Daughter | — | Massachusetts |
| 44 | Mildred Gundalin | 3 | Daughter | — | Massachusetts |
| 45 | James Gundalin | 2 | Son | — | Massachusetts |
| 46 | John Carney | 43 | Head | Laborer | Massachusetts |
| 47 | Mary Carney | 42 | Wife | — | Massachusetts |
| 48 | Mary Carney THIS PERSON | 19 | Daughter | — | Massachusetts |
| 49 | Joseph Carney | 14 | Son | — | Massachusetts |
| 50 | Frances Carney | 12 | Son | — | Massachusetts |
| 51 | Helen Carney | 9 | Daughter | — | Massachusetts |
| 52 | Carl Langley | 25 | Head | Roofer | Vermont |
| 53 | Bertha Langley | 22 | Wife | — | Massachusetts |
| 54 | Carol Langley | 3 | Daughter | — | Massachusetts |
| 55 | Frances Langley | 2 | Daughter | — | Connecticut |
| 56 | Morris Levine | 77 | Head | — | Russia |
| 57 | Bessie Levine | 75 | Wife | — | Russia |
| 58 | Henry Levine | 52 | Son | Plumber | Russia |
| 59 | Annie Levine | 50 | Daughter | — | Russia |
| 60 | Abraham Levine | 48 | Son | Baker | Russia |
| 61 | Harry Levine | 47 | Son | Scrap Metals | Russia |
| 62 | Minnie Levine | 45 | Daughter | Waitress | Russia |
| 63 | Louis Levine | 43 | Son | Carpenter Shop | Russia |
| 64 | Yetta Berman | 72 | Lodger | — | Russia |
| 65 | Abraham Bernstein | 65 | Head | — | Russia |
| 66 | Rose Bernstein | 60 | Wife | — | Russia |
| 67 | George Bernstein | 35 | Son | Butcher | Massachusetts |
| 68 | Irene Bernstein | 28 | Daughter | Stenographer | Massachusetts |
| 69 | Bertha Bernstein | 26 | Daughter | Clerical Work | Massachusetts |
| 70 | Barney Leventer | 50 | Head | Restaurant Prop | Russia |
| 71 | Pauline Leventer | 48 | Wife | — | Russia |
| 72 | Nathan Leventer | 18 | Son | Waiter | Massachusetts |
| 73 | Edward Leventer | 15 | Son | — | Massachusetts |
| 74 | Israel Leventer | 11 | Son | — | Massachusetts |
| 75 | Ida Tillman | 68 | Mother in law | — | Russia |
| 76 | Dillie Tillman | 50 | Sister in law | Canning Project | Connecticut |
| 77 | Charles Wilson | 61 | Head | Carpenter | Russia |
| 78 | Rae Wilson | 49 | Wife | — | Russia |
| 79 | Merriam Wilson | 19 | Daughter | — | Florida |
| 80 | Helen Wilson | 16 | Daughter | — | Massachusetts |
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)