MC
Mary Cleary — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Cleary across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cleary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Malden City |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Cleary | Daughter | — | 15 | ~1925 |
| Hugh Cleary | Son | — | 18 | ~1922 |
| Catherine Crowley | Other | — | 74 | ~1866 |
| Gertrude Cleary | Daughter | — | 14 | ~1926 |
| Robert Cleary | Son | — | 8 | ~1932 |
| Ellen Cleary | Spouse | — | 46 | ~1894 |
| Ann Cleary | Daughter | — | 7 | ~1933 |
| Edward Cleary | Son | — | 12 | ~1928 |
| Hugh Cleary | Head | — | 55 | ~1885 |
| Mary Cleary | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cleary |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| 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 17
Middlesex-County, Massachusetts · implied b. ~1923 — 10 household members
| Surname | Cleary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H 2 |
| 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 Cleary across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cleary
Daughter · 1940 · age 17 · b. ~1923 · Massachusetts
★ You are viewing this record
Sibling
Robert Cleary
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Cleary
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Cleary
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Cleary
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Cleary
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Cleary
Sibling · 1940 · age 18
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-t0627-01609-00018)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leo Twomey | 46 | Head | Letter Carrier | Massachusetts |
| 42 | Margaret Twomey | 41 | Wife | — | Massachusetts |
| 43 | Margaret Twomey | 9 | Daughter | — | Massachusetts |
| 44 | David Twomey | 5 | Son | — | Massachusetts |
| 45 | Jerome Twomey | 4 | Son | — | Massachusetts |
| 46 | Bernard Twomey | 1 | Son | — | Massachusetts |
| 47 | Hugh Cleary | 55 | Head | Foreman | Massachusetts |
| 48 | Ellen Cleary | 46 | Wife | — | Massachusetts |
| 49 | Hugh Cleary | 18 | Son | — | Massachusetts |
| 50 | Mary Cleary THIS PERSON | 17 | Daughter | — | Massachusetts |
| 51 | Eleanor Cleary | 15 | Daughter | — | Massachusetts |
| 52 | Gertrude Cleary | 14 | Daughter | — | Massachusetts |
| 53 | Edward Cleary | 12 | Son | — | Massachusetts |
| 54 | Robert Cleary | 8 | Son | — | Massachusetts |
| 55 | Ann Cleary | 7 | Daughter | — | Massachusetts |
| 56 | Catherine Crowley | 74 | Mother in law | — | Ireland |
| 57 | Anthony Brawley | 27 | Head | Checker | Massachusetts |
| 58 | Cecilia Brawley | 23 | Wife | — | Massachusetts |
| 59 | Anthony Brawley | 1 | Son | — | Massachusetts |
| 60 | Joseph Czalpinski | 27 | Brother in law | Receiving Clerk | Massachusetts |
| 61 | Edwin Czalpinski | 17 | Brother in law | — | Massachusetts |
| 62 | Ralph Brown | 35 | Head | Appraisal Engineer | Massachusetts |
| 63 | Elsie Brown | 36 | Wife | — | New Hampshire |
| 64 | Ralph Brown | 11 | Son | — | Massachusetts |
| 65 | Gardner Brown | 10 | Son | — | Massachusetts |
| 66 | Leola Brown | 9 | Daughter | — | Massachusetts |
| 67 | Ann Brown | 7 | Daughter | — | Vermont |
| 68 | Emma White | 83 | Head | — | Massachusetts |
| 69 | Emma White | 71 | Daughter in law | — | Massachusetts |
| 70 | Walter Proluke | 56 | Head | Plumber | Mississippi |
| 71 | Irene Proluke | 55 | Wife | — | Mississippi |
| 72 | Albert Grinden | 55 | Head | Steam Engineer | Finland |
| 73 | Mathilda Grinden | 51 | Wife | — | Norway |
| 74 | Ruth Grinden | 24 | Daughter | — | Massachusetts |
| 75 | Mary Moran | 44 | Head | Clerk | Massachusetts |
| 76 | Helen Moran | 34 | Sister | Operator | Massachusetts |
| 77 | Grace Moran | 32 | Sister | Operator | Massachusetts |
| 78 | Catherine Moran | 30 | Sister | — | Massachusetts |
| 79 | Edward Moran | 26 | Brother | Lineman | Massachusetts |
| 80 | Vesper Barnes | 41 | Head | Part Owner | Maine |
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)