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Mary Mchugh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Mchugh across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McHugh |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Watertown town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Watertown Town |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Francis Mchugh | Son | — | 20 | ~1920 |
| Elizabeth Mchugh | Daughter | — | 11 | ~1929 |
| Elizabeth Mchugh | Spouse | — | 39 | ~1901 |
| Mary Mchugh | Daughter | — | 17 | ~1923 |
| Frank Mchugh | Head | — | 49 | ~1891 |
| Eleanor Mchugh | Daughter | — | 8 | ~1932 |
| Donald Mchugh | Son | — | 15 | ~1925 |
| Robert Mchugh | Son | — | 9 | ~1931 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McHugh |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | England |
| 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 — 8 household members
| Surname | McHugh |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Watertown town |
| 1935 Residence (County) | Middlesex |
| Highest Grade | Hs 3 |
| 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 Mchugh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mchugh
Daughter · 1940 · age 17 · b. ~1923 · Massachusetts
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Sibling
Eleanor Mchugh
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mchugh
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Mchugh
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mchugh
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mchugh
Sibling · 1940 · age 11
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-t0627-01621-00210)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Theresa L. O'Brien | 6 | daughter | — | Massachusetts |
| 42 | Steve Rosenske | 54 | head | Watchman | Poland |
| 43 | Mary Rosenske | 55 | wife | Tube Maker | Massachusetts |
| 44 | Helen Rosenske | 20 | daughter | Laboratory Worker | Massachusetts |
| 45 | Frank J. Mchugh | 49 | Head | Salesman | Massachusetts |
| 46 | Elizabeth E. Mchugh | 39 | wife | Saleslady | Massachusetts |
| 47 | Francis Mchugh | 20 | son | Salesman | Massachusetts |
| 48 | Mary E. Mchugh THIS PERSON | 17 | daughter | — | Massachusetts |
| 49 | Donald E. Mchugh | 15 | son | — | Massachusetts |
| 50 | Elizabeth E. Mchugh | 11 | daughter | — | Massachusetts |
| 51 | Robert Mchugh | 9 | son | — | Massachusetts |
| 52 | Eleanor Mchugh | 8 | daughter | — | Massachusetts |
| 53 | Stephen K. Eaton | 51 | head | Stationary Steam Engineer | Massachusetts |
| 54 | Ethel C. Eaton | 46 | wife | — | Massachusetts |
| 55 | Stephen K. Jr. Eaton | 21 | son | Garnet Operator | Massachusetts |
| 56 | Felix Walencis | 31 | head | Garnet Operator | Massachusetts |
| 57 | Eleanor Walencis | 30 | wife | — | Massachusetts |
| 58 | Richard Walencis | 4 | son | — | Massachusetts |
| 59 | Albert J. La Fort | 32 | head | Chauffeur | Massachusetts |
| 60 | Catherine La Fort | 30 | wife | — | Massachusetts |
| 61 | Joanne T. La Fort | 7 | daughter | — | Massachusetts |
| 62 | Shirley C. La Fort | 6 | daughter | — | Massachusetts |
| 63 | Norma La Fort | 2 | daughter | — | Massachusetts |
| 64 | Walter Kasper | 47 | head | Garnet Duster | Poland |
| 65 | Vera Kasper | 45 | wife | Wool Sorter | Poland |
| 66 | Lillian Kasper | 23 | daughter | Hair Dresser | Massachusetts |
| 67 | Jeffrey J. Jerdine | 37 | head | Truck Driver | Canada French |
| 68 | Thelma S. Jerdine | 33 | wife | Wool Sorter | Maine |
| 69 | Jeffrey F. Jerdine | 13 | son | — | Massachusetts |
| 70 | Louis Leonbruno | 28 | head | Tape Cutter | Italy |
| 71 | Catherine Leonbruno | 27 | wife | — | Massachusetts |
| 72 | Robert L. Leonbruno | 3 | son | — | Massachusetts |
| 73 | Ronald R. Leonbruno | 2 | son | — | Massachusetts |
| 74 | John Kasper | 48 | head | Garnet Operator | Poland |
| 75 | Anna Kasper | 46 | wife | Wool Sorter | Poland |
| 76 | John Kasper | 21 | son | — | Massachusetts |
| 77 | Wilfred C. Parent | 30 | head | Laborer | New Hampshire |
| 78 | Lillie M. Parent | 34 | wife | — | Massachusetts |
| 79 | Jean G. Parent | 6 | daughter | — | Massachusetts |
| 80 | Edna L. Parent | 0 | 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)