MC
Mary Carney — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Carney across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 9-person household.
Age 17
b. ~1913
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Novelty Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bookkeeper |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1913 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Raymond Carney | Son | — | 10 | ~1920 |
| John Carney | Head | — | 45 | ~1885 |
| Rita Carney | Daughter | — | 14 | ~1916 |
| Gladys Carney | Daughter | — | 8 | ~1922 |
| Mary Carney | Spouse | — | 42 | ~1888 |
| John Carney | Son | — | 21 | ~1909 |
| Anna Carney | Daughter | — | 20 | ~1910 |
| Josephine Carney | Daughter | — | 3 | ~1927 |
| Mary Carney | Daughter | — | 17 | ~1913 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 17
Middlesex, Massachusetts · implied b. ~1913 — 9 household members
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Bookkeeper |
| Industry | Novelty Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carney
Daughter · 1930 · age 17 · b. ~1913 · Massachusetts
★ You are viewing this record
Sibling
Anna Carney
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Carney
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Carney
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gladys Carney
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Carney
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Carney
Sibling · 1930 · age 21
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel922:0557)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Taylor | 34 | Head | — | Northern Ireland |
| 2 | James Taylor | 18 | Son | Clerk | Massachusetts |
| 3 | Elizabeth D. Taylor | 15 | Daughter | — | Massachusetts |
| 4 | Ruth E. Taylor | 12 | Daughter | — | Massachusetts |
| 5 | James W. Marshall | 61 | Head | Proprietor | Northern Ireland |
| 6 | Elizabeth Marshall | 67 | Wife | — | Northern Ireland |
| 7 | Lottie E. Marshall | 28 | Daughter | — | Massachusetts |
| 8 | Flora R. Marshall | 26 | Daughter | Store Clerk | Massachusetts |
| 9 | Angus J. Marshall | 33 | Son | Milk Man | Massachusetts |
| 10 | Peter H. Johnson | 31 | Head | Salesman | Norway |
| 11 | Laura Johnson | 27 | Wife | — | Norway |
| 12 | Gloria Johnson | 6 | Daughter | — | Massachusetts |
| 13 | George Johnson | 4 | Son | — | Massachusetts |
| 14 | Audrey Johnson | 3 | Daughter | — | Massachusetts |
| 15 | Sonia Johnson | 0 | Daughter | — | Massachusetts |
| 16 | Richard Hoyle | 36 | Head | Overseer | England |
| 17 | Edith Hoyle | 32 | Wife | — | Massachusetts |
| 18 | John M. Pinardi | 40 | Head | Carpenter | Maine |
| 19 | Josephine Pinardi | 44 | Wife | — | Canada-French |
| 20 | William F. Ryan | 44 | Head | Manufacturer | Massachusetts |
| 21 | Margaret Ryan | 39 | Sister | — | Massachusetts |
| 22 | Leo F. Murphy | 36 | Nephew | Accountant | Massachusetts |
| 23 | Charles E. Murphy | 26 | Nephew | Chauffeur | Massachusetts |
| 24 | Margaret Roche | 46 | Head | — | Irish Free State |
| 25 | Agnes J. Roche | 43 | Sister | — | Irish Free State |
| 26 | Catherine Roche | 38 | Sister | — | Irish Free State |
| 27 | Elizabeth V. Roche | 36 | Sister | Vamper | Irish Free State |
| 28 | James L. O'Toole | 47 | Partner | Weaver | Massachusetts |
| 29 | Lena W. O'Toole | 40 | Sister | — | Irish Free State |
| 30 | Napoleon Paquin | 54 | Head | Stone Cutter | Canada-French |
| 31 | Lumena Paquin | 61 | Wife | — | Canada-French |
| 32 | Rose Paquin | 67 | Roomer | — | Canada-French |
| 33 | Richard Clark | 55 | Head | — | Massachusetts |
| 34 | Rose Clark | 46 | Wife | — | Scotland |
| 35 | George Mckenna | 37 | Head | Chauffeur | Massachusetts |
| 36 | Katherine Mckenna | 35 | Wife | — | Massachusetts |
| 37 | Lizzie S. Spaulding | 48 | Head | Matron | Scotland |
| 38 | Gladys Spaulding | 14 | Daughter | — | Massachusetts |
| 39 | John F. Carney | 45 | Head | Merchant | Massachusetts |
| 40 | Mary E. Carney | 42 | Wife | — | Massachusetts |
| 41 | John F. Carney | 21 | Son | Sales Clerk | Massachusetts |
| 42 | Anna Carney | 20 | Daughter | Sales Clerk | Massachusetts |
| 43 | Mary Carney THIS PERSON | 17 | Daughter | Bookkeeper | Massachusetts |
| 44 | Rita Carney | 14 | Daughter | — | Massachusetts |
| 45 | Raymond Carney | 10 | Son | — | Massachusetts |
| 46 | Gladys Carney | 8 | Daughter | — | Massachusetts |
| 47 | Josephine Carney | 3 | Daughter | — | Massachusetts |
| 48 | George H. Harris | 71 | Head | Polisher | England |
| 49 | Emma B. Harris | 72 | Wife | — | Massachusetts |
| 50 | Daisy Harris | 40 | Daughter | — | Massachusetts |
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)