MC
Mary Clancy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Clancy across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1903), then head of a 7-person household.
Age 37
b. ~1903
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Clancy |
| Given Name | Mary C |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Melrose City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Industry | Home |
| Class of Worker | H |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Melrose City |
| Est. Birth Year | ~1903 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Clancy | Son | — | 10 | ~1930 |
| James Clancy | Son | — | 7 | ~1933 |
| Patrick Clancy | Son | — | 11 | ~1929 |
| John Clancy | Son | — | 9 | ~1931 |
| Mary Clancy | Spouse | — | 37 | ~1903 |
| Patrick Clancy | Head | — | 38 | ~1902 |
| Mary Clancy | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Middlesex, Massachusetts
Spouse, age 27
Middlesex, Massachusetts · implied b. ~1903 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clancy |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 22 |
| 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
Spouse, age 37
Middlesex-County, Massachusetts · implied b. ~1903 — 7 household members
| Surname | Clancy |
| Given Name | Mary C |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Melrose City |
| 1935 Residence (County) | Middlesex |
| Industry | Home |
| Class of Worker | H |
| 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 Clancy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Clancy
Spouse · 1940 · age 37 · b. ~1903 · Massachusetts
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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-t0627-01613-00505)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Alden | 38 | Head | Milk Salesman | Rhode Island |
| 42 | Julia Alden | 38 | Wife | — | Massachusetts |
| 43 | Rita Alden | 17 | Daughter | — | Massachusetts |
| 44 | Charles Alden | 15 | Son | — | Massachusetts |
| 45 | Barbara Alden | 14 | Daughter | — | Massachusetts |
| 46 | Ray Fall | 23 | Head | Laborer | Maine |
| 47 | Edna Fall | 22 | Wife | — | Maine |
| 48 | Nancy Fall | 2 | Daughter | — | Massachusetts |
| 49 | John Ramshill | 50 | Head | — | Massachusetts |
| 50 | John T Brophy | 39 | Head | Engineer | Massachusetts |
| 51 | Mary E Brophy | 38 | Wife | — | Connecticut |
| 52 | John T Jr Brophy | 11 | Son | — | Massachusetts |
| 53 | James Brophy | 7 | Son | — | Massachusetts |
| 54 | Patrick J Clancy | 38 | Head | Hoisting Engineer | Massachusetts |
| 55 | Mary C Clancy THIS PERSON | 37 | Wife | — | Massachusetts |
| 56 | Patrick J Jr Clancy | 11 | Son | — | Massachusetts |
| 57 | William Clancy | 10 | Son | — | Massachusetts |
| 58 | John Clancy | 9 | Son | — | Massachusetts |
| 59 | James A Clancy | 7 | Son | — | Massachusetts |
| 60 | Mary Claire Clancy | 2 | Daughter | — | Massachusetts |
| 61 | Clarence Alexander | 54 | Head | Treasurer | New Hampshire |
| 62 | Alice Alexander | 52 | Wife | — | New Hampshire |
| 63 | Richard Alexander | 21 | Son | Clerk | Massachusetts |
| 64 | John R Taylor | 48 | Head | Broker | Massachusetts |
| 65 | Alice Taylor | 44 | Wife | — | Massachusetts |
| 66 | John R Jr Taylor | 19 | Son | — | Massachusetts |
| 67 | Marilyn Taylor | 16 | Daughter | — | Massachusetts |
| 68 | Charles E Eaton | 50 | Head | Proprietor | Massachusetts |
| 69 | Lillian M Bailey | 70 | Mother | — | Massachusetts |
| 70 | Albert M Murray | 66 | Head | Proprietor | Massachusetts |
| 71 | Ida F Murray | 70 | Wife | — | Canada English |
| 72 | Harold L Hines | 51 | Head | Vice President | New York |
| 73 | Ida Hines | 51 | Wife | — | Massachusetts |
| 74 | Cora Richardson | 46 | Housekeeper | Housekeeper | Maine |
| 75 | Paul Furman | 36 | Head | Supervisor | Michigan |
| 76 | Dorothy Furman | 29 | Wife | — | Maine |
| 77 | Anne Furman | 3 | Daughter | — | Massachusetts |
| 78 | Carol Ann Furman | 2 | Daughter | — | Massachusetts |
| 79 | Priscilla Greene | 14 | Boarder | — | Massachusetts |
| 80 | Carol Mrs Cobbens | 52 | Head | Maid | 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)