MC
Mary Carey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Carey across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 8-person household.
Age 14
b. ~1916
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Carey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Maynard Village |
| Est. Birth Year | ~1916 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carey | Daughter | — | 14 | ~1916 |
| Elizabeth Carey | Daughter | — | 9 | ~1921 |
| Catherine Carey | Daughter | — | 10 | ~1920 |
| Veronica Carey | Daughter | — | 5 | ~1925 |
| Alfred Carey | Head | — | 40 | ~1890 |
| Lucilla Carey | Other | — | 37 | ~1893 |
| Alfred Carey | Son | — | 12 | ~1918 |
| Thomas Carey | Son | — | 6 | ~1924 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 4
Middlesex, Massachusetts · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 14
Middlesex, Massachusetts · implied b. ~1916 — 8 household members
| Surname | Carey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| 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 Carey across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carey
Daughter · 1930 · age 14 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Thomas Carey
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Carey
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Carey
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Carey
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veronica Carey
Sibling · 1930 · age 5
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:massachusettscensus00reel924:0148)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Wheeler Brooks | 32 | Head | — | Massachusetts |
| 52 | Howard Brooks | 10 | Son | — | Massachusetts |
| 53 | Gladys Brooks | 6 | Daughter | — | Massachusetts |
| 54 | Alva M. Dockerty | 44 | Head | Fireman | Massachusetts |
| 55 | Bessie W. Dockerty | 40 | Wife-H | — | Vermont |
| 56 | Enoch Lomont | 34 | Head | Teamster | Canada-English |
| 57 | Bertha B. Lomont | 30 | Wife-H | — | Canada-English |
| 58 | Dorothy M. Lomont | 9 | Daughter | — | Canada-English |
| 59 | Doris Lomont | 7 | Daughter | — | Canada-English |
| 60 | Enoch E. Lomont | 6 | Son | — | Massachusetts |
| 61 | Bertha M. Lomont | 3 | Daughter | — | Massachusetts |
| 62 | Alfred S. Carey | 40 | Head | Fireman | Massachusetts |
| 63 | Lucilla V. Carey | 37 | Wife-H | — | Massachusetts |
| 64 | Mary Carey THIS PERSON | 14 | Daughter | — | Massachusetts |
| 65 | Alfred Carey | 12 | Son | — | Massachusetts |
| 66 | Catherine Carey | 10 | Daughter | — | Massachusetts |
| 67 | Elizabeth Carey | 9 | Daughter | — | Massachusetts |
| 68 | Thomas Carey | 6 | Son | — | Massachusetts |
| 69 | Veronica Carey | 5 | Daughter | — | Massachusetts |
| 70 | Wilfred Gurnet | 29 | Head | Electrician | Massachusetts |
| 71 | Ella Gurnet | 29 | Wife-H | — | Canada-French |
| 72 | Mertina Winslow | 73 | Head | — | Maine |
| 73 | Emma Smith | 48 | Daughter | — | Maine |
| 74 | William Hooper | 62 | Head | Fireman | Massachusetts |
| 75 | Idah Hooper | 61 | Wife-H | — | Massachusetts |
| 76 | Frank Douse | 34 | Head | Laborer | New Hampshire |
| 77 | Flora Douse | 29 | Wife-H | — | New Hampshire |
| 78 | Robert Douse | 8 | Son | — | Vermont |
| 79 | Karl F. Bull | 75 | Lodger | Salesman | Pennsylvania |
| 80 | Alvin Stone | 54 | Head | Stationary Eng. | Maine |
| 81 | Helen E. Stone | 54 | Wife-H | — | Massachusetts |
| 82 | Helen E. H. Stone | 16 | Daughter | — | Massachusetts |
| 83 | — | None | — | — | — |
| 84 | — | None | — | — | — |
| 85 | — | None | — | — | — |
| 86 | — | None | — | — | — |
| 87 | — | None | — | — | — |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)