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Mary Mcnulty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Mcnulty across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | McNulty |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Winifred Mcnulty | Daughter | — | 20 | ~1920 |
| Philip Mcnulty | Son | — | 14 | ~1926 |
| Vincent Mcnulty | Son | — | 19 | ~1921 |
| Andrew Mcnulty | Son | — | 16 | ~1924 |
| Paul Mcnulty | Son | — | 23 | ~1917 |
| Mary Mcnulty | Daughter | — | 12 | ~1928 |
| Virginia Mcnulty | Daughter | — | 17 | ~1923 |
| Francis Mcnulty | Head | — | 48 | ~1892 |
| Sarah Mcnulty | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 2
Suffolk, Massachusetts · implied b. ~1928 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNulty |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 12
Suffolk-County, Massachusetts · implied b. ~1928 — 9 household members
| Surname | McNulty |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| 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 Mcnulty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcnulty
Daughter · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
Andrew Mcnulty
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Mcnulty
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Mcnulty
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Mcnulty
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mcnulty
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Mcnulty
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01677-00071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Cossette | 5 | Son | — | Massachusetts |
| 42 | Francis P Mcnulty | 48 | Head | Laborer | Massachusetts |
| 43 | Sarah A Mcnulty | 50 | Wife | — | Massachusetts |
| 44 | Paul J Mcnulty | 23 | Son | Truck Driver | Massachusetts |
| 45 | Winifred A Mcnulty | 20 | Daughter | Nurse | Massachusetts |
| 46 | Vincent C Mcnulty | 19 | Son | New Worker | Massachusetts |
| 47 | Virginia M Mcnulty | 17 | Daughter | — | Massachusetts |
| 48 | Andrew A Mcnulty | 16 | Son | — | Massachusetts |
| 49 | Philip B Mcnulty | 14 | Son | — | Massachusetts |
| 50 | Mary M Mcnulty THIS PERSON | 12 | Daughter | — | Massachusetts |
| 51 | George De Angelis | 25 | Head | Tool Sharpener | Massachusetts |
| 52 | Mary C De Angelis | 25 | Wife | — | Massachusetts |
| 53 | Leonard E Curran | 31 | Head | Civil Engineer | Massachusetts |
| 54 | Agnes R Curran | 32 | Wife | — | Massachusetts |
| 55 | Mary G Curran | 5 | Daughter | — | Massachusetts |
| 56 | Margaret A Curran | 4 | Daughter | — | Massachusetts |
| 57 | Peter Antofonaco | 57 | Head | Proprietor | Italy |
| 58 | Rose Antofonaco | 45 | Wife | — | Italy |
| 59 | Francis Antofonaco | 27 | Son | Sorter | Massachusetts |
| 60 | Nancy Antofonaco | 21 | Daughter | Marker | Massachusetts |
| 61 | Rose Antofonaco | 18 | Daughter | — | Massachusetts |
| 62 | Eleanor Antofonaco | 16 | Daughter | — | Massachusetts |
| 63 | Anna Antofonaco | 14 | Daughter | — | Massachusetts |
| 64 | Ends Here | None | BLOCK | — | — |
| 65 | William E Nolan | 52 | Head | Electrician | Massachusetts |
| 66 | Mary E Nolan | 58 | Wife | — | Massachusetts |
| 67 | William E Jr Nolan | 25 | Son | Shipper | Massachusetts |
| 68 | Mary E Nolan | 24 | Daughter | Salesgirl | Massachusetts |
| 69 | Charles S Nolan | 21 | Son | Office Boy | Massachusetts |
| 70 | Anna A Nolan | 18 | Daughter | — | Massachusetts |
| 71 | John C Nolan | 16 | Son | — | Massachusetts |
| 72 | John A O'Brien | 56 | Head | — | Massachusetts |
| 73 | Rose C O'Brien | 43 | Wife | — | Massachusetts |
| 74 | Rose C O'Brien | 21 | Daughter | File Clerk | Massachusetts |
| 75 | Margaret M O'Brien | 19 | Daughter | Bookkeeper | Massachusetts |
| 76 | Eleanor C O'Brien | 17 | Daughter | — | Massachusetts |
| 77 | John F O'Brien | 13 | Son | — | Massachusetts |
| 78 | Leo T O'Brien | 11 | Son | — | Massachusetts |
| 79 | Ends Here | None | BLOCK | — | — |
| 80 | End -> | None | OF | — | — |
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)