MV
Mary Vaughan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Vaughan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 11-person household.
Age 23
b. ~1917
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Vaughan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | stenographer |
| Industry | office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Boston |
| Est. Birth Year | ~1917 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Vaughan | Son | — | 25 | ~1915 |
| Mary Vaughan | Daughter | — | 23 | ~1917 |
| Patricia Vaughan | Daughter | — | 12 | ~1928 |
| Maurice Vaughan | Head | — | 52 | ~1888 |
| Helen Fay | Daughter | — | 27 | ~1913 |
| Anna Vaughan | Daughter | — | 16 | ~1924 |
| Kathryn Vaughan | Daughter | — | 29 | ~1911 |
| John Fay | Other | — | 31 | ~1909 |
| Evelyn Vaughan | Daughter | — | 14 | ~1926 |
| Thomas Vaughan | Son | — | 24 | ~1916 |
| Josephine Vaughan | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 13
Suffolk, Massachusetts · implied b. ~1917 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Vaughan |
| Given Name | Mary T |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | at school |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 23
Suffolk-County, Massachusetts · implied b. ~1917 — 11 household members
| Surname | Vaughan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | stenographer |
| Industry | office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 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 Vaughan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Vaughan
Daughter · 1940 · age 23 · b. ~1917 · Massachusetts
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Sibling
Kathryn Vaughan
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Vaughan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Vaughan
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Vaughan
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Vaughan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Vaughan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Fay
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Vaughan
Sibling · 1940 · age 16
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-t0627-01675-00536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Nagle | 2 | Son | — | Massachusetts |
| 42 | John T. Murray | 50 | Brother-in-law | Truck Driver | Massachusetts |
| 43 | Emma A. Murray | 52 | Sister-in-law | Stenographer | Massachusetts |
| 44 | Ethel M. Murray | 44 | Sister-in-law | Housework | Massachusetts |
| 45 | Dorothy L. Murray | 42 | Sister-in-law | — | Massachusetts |
| 46 | Joseph A. Flynn | 40 | Head | Fireman | Massachusetts |
| 47 | Catherine V. Flynn | 38 | Wife | — | Massachusetts |
| 48 | Mary Lewis | 35 | Sister-in-law | Clerk | Massachusetts |
| 49 | Patrick Louis | 44 | Head | Carpenter | Canada-English |
| 50 | Juliet Louis | 48 | Wife | Decorator | Canada-English |
| 51 | Robert Louis | 23 | Son | Mechanic | Massachusetts |
| 52 | William P. O'Connell | 31 | Head | Truck Driver Chauffeur | Massachusetts |
| 53 | Julia O'Connell | 62 | Mother | — | Eire |
| 54 | George N. Dowley | 32 | Head | Truck Driver | Massachusetts |
| 55 | Helene G. Dowley | 34 | Wife | — | Massachusetts |
| 56 | Helene Dowley | 5 | Daughter | — | Massachusetts |
| 57 | Mary F. Dowley | 4 | Daughter | — | Massachusetts |
| 58 | Phyllis Dowley | 1 | Daughter | — | Massachusetts |
| 59 | George H. Riley | 39 | Head | Lather | Massachusetts |
| 60 | Henrietta Riley | 35 | Wife | — | Massachusetts |
| 61 | William H. Riley | 12 | Son | — | Massachusetts |
| 62 | Madelyn H. Riley | 7 | Daughter | — | Massachusetts |
| 63 | Maurice Vaughan | 52 | Head | Blacksmith | Eire |
| 64 | Kathryn Vaughan | 29 | Daughter | Inspector | Massachusetts |
| 65 | John Vaughan | 25 | Son | Clerk | Massachusetts |
| 66 | Thomas Vaughan | 24 | Son | Laborer | Massachusetts |
| 67 | Mary Vaughan THIS PERSON | 23 | Daughter | Stenographer | Massachusetts |
| 68 | Josephine Vaughan | 17 | Daughter | — | Massachusetts |
| 69 | Anna Vaughan | 16 | Daughter | — | Massachusetts |
| 70 | Evelyn Vaughan | 14 | Daughter | — | Massachusetts |
| 71 | Patricia Vaughan | 12 | Daughter | — | Massachusetts |
| 72 | John Fay | 31 | Son-in-law | Business Agent | Massachusetts |
| 73 | Helen Fay | 27 | Daughter | — | Massachusetts |
| 74 | Hugh K. Traverse | 45 | Head | Pipe Fitter | Newfoundland |
| 75 | Della F. Traverse | 41 | Wife | Nurse Practical | Newfoundland |
| 76 | Kenneth Traverse | 21 | Son | Student | Massachusetts |
| 77 | Virginia Traverse | 16 | Daughter | — | Massachusetts |
| 78 | Richard Traverse | 10 | Son | — | Massachusetts |
| 79 | George Traverse | 8 | Son | — | Massachusetts |
| 80 | Helen Nugent | 22 | Niece | Nurse Practical | Canada-English |
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)