MC
Mary Carpenter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Carpenter across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 12-person household.
Age 21
b. ~1919
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Carpenter |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Wilmington Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Ticket Seller |
| Industry | Theatre |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 365 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Ticket Seller |
| Township / Ward | Wilmington Town |
| Est. Birth Year | ~1919 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carpenter | Daughter | — | 21 | ~1919 |
| Frank Carpenter | Head | — | 42 | ~1898 |
| Richard Carpenter | Son | — | 16 | ~1924 |
| Joseph Carpenter | Son | — | 13 | ~1927 |
| Walter Carpenter | Son | — | 4 | ~1936 |
| Robert Carpenter | Son | — | 17 | ~1923 |
| Paul Carpenter | Son | — | 9 | ~1931 |
| Charles Carpenter | Son | — | 19 | ~1921 |
| Charles Carpenter | Son | — | 6 | ~1934 |
| Frank Carpenter | Son | — | 20 | ~1920 |
| Edward Carpenter | Son | — | 14 | ~1926 |
| Maud Carpenter | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carpenter |
| Given Name | Marion E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| 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 |
1940
Middlesex-County, Massachusetts
Daughter, age 21
Middlesex-County, Massachusetts · implied b. ~1919 — 12 household members
| Surname | Carpenter |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Wilmington Town |
| 1935 Residence (County) | Middlesex |
| Occupation | Ticket Seller |
| Industry | Theatre |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 365 |
| Highest Grade | H 4 |
| 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 Carpenter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carpenter
Daughter · 1940 · age 21 · b. ~1919 · Massachusetts
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Sibling
Charles Carpenter
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Carpenter
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Carpenter
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Carpenter
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Carpenter
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Carpenter
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Carpenter
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Carpenter
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Carpenter
Sibling · 1940 · age 19
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01621-00597)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James H. Jr. White | 13 | Son | — | Massachusetts |
| 2 | Gertrude L. White | 9 | Daughter | — | Massachusetts |
| 3 | Robert C. Charest | 44 | Head | Letterer | New Hampshire |
| 4 | Roland A. Charest | 22 | Son | Counter Man | New Hampshire |
| 5 | Evelyn Charest | 18 | Daughter | New Worker | Massachusetts |
| 6 | Donald Charest | 17 | Son | — | New Hampshire |
| 7 | Frank J. Bennett | 71 | Head | — | Maine |
| 8 | Alice D. Bennett | 71 | Wife | — | Maine |
| 9 | Arthur J. Robinson | 63 | Head | Conductor | New Hampshire |
| 10 | Helen C. Robinson | 59 | Wife | — | New Hampshire |
| 11 | Robert Oram | 7 | Grandson | — | New Hampshire |
| 12 | Robert A. Oram | 36 | Head | Collector | Massachusetts |
| 13 | Mildred H. Oram | 29 | Wife | — | Canada English |
| 14 | Robert A. Jr. Oram | 4 | Son | — | Massachusetts |
| 15 | John H. Oram | 2 | Son | — | Massachusetts |
| 16 | Frank G. Carpenter | 42 | Head | Blacksmith | Massachusetts |
| 17 | Maud M. Carpenter | 46 | Wife | — | Massachusetts |
| 18 | Mary C. Carpenter THIS PERSON | 21 | Daughter | Ticket Seller | Massachusetts |
| 19 | Frank G. Jr. Carpenter | 20 | Son | Truck Driver | Massachusetts |
| 20 | Charles R. Carpenter | 19 | Son | Laborer | Massachusetts |
| 21 | Robert J. Carpenter | 17 | Son | Laborer | Massachusetts |
| 22 | Richard Carpenter | 16 | Son | — | Massachusetts |
| 23 | Edward A. Carpenter | 14 | Son | — | Massachusetts |
| 24 | Joseph C. Carpenter | 13 | Son | — | Massachusetts |
| 25 | Paul M. Carpenter | 9 | Son | — | Massachusetts |
| 26 | Charles W. Carpenter | 6 | Son | — | Massachusetts |
| 27 | Walter D. Carpenter | 4 | Son | — | Massachusetts |
| 28 | Berton F. West | 49 | Head | Machinist | Massachusetts |
| 29 | Carolyn W. West | 38 | Wife | — | Massachusetts |
| 30 | George C. West | 12 | Son | — | Massachusetts |
| 31 | Robert R. Livesey | 51 | Head | U.S. Navy | Massachusetts |
| 32 | Mary B. Livesey | 45 | Wife | — | Massachusetts |
| 33 | Richard Livesey | 10 | Son | — | Massachusetts |
| 34 | Ambrose R. Livesey | 6 | Ward | — | Massachusetts |
| 35 | Nenus Lawrence Livesey | 4 | Ward | — | Massachusetts |
| 36 | Delaney Ormond Livesey | 10 | Ward | — | Massachusetts |
| 37 | Harry J. Cuthbert | 30 | Head | Chauffeur | Massachusetts |
| 38 | Elizabeth M. Cuthbert | 30 | Wife | — | Scotland |
| 39 | Marion S. Cuthbert | 9 | Daughter | — | Massachusetts |
| 40 | Elizabeth S. Cuthbert | 5 | Daughter | — | Massachusetts |
Related Census Records
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)