MV
Mary Vaughan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Vaughan across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 10-person household.
Age 16
b. ~1924
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Vaughan |
| Given Name | Mary T. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1924 |
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 |
|---|---|---|---|---|
| Francis Vaughan | Son | — | 9 | ~1931 |
| Lawrence Vaughan | Son | — | 5 | ~1935 |
| Thomas Vaughan | Son | — | 11 | ~1929 |
| George Vaughan | Son | — | 13 | ~1927 |
| John Vaughan | Son | — | 14 | ~1926 |
| Mary Vaughan | Daughter | — | 16 | ~1924 |
| Joseph Vaughan | Son | — | 8 | ~1932 |
| Elizabeth Vaughan | Daughter | — | 3 | ~1937 |
| Marie Vaughan | Spouse | — | 44 | ~1896 |
| Michael Vaughan | Head | — | 52 | ~1888 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 5
Middlesex, Massachusetts · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Vaughan |
| Given Name | Maura |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | New York |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 16
Middlesex-County, Massachusetts · implied b. ~1924 — 10 household members
| Surname | Vaughan |
| Given Name | Mary T. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| 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 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 16 · b. ~1924 · Massachusetts
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Sibling
Francis Vaughan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Vaughan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Vaughan
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Vaughan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Vaughan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Vaughan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Vaughan
Sibling · 1940 · age 8
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-t0627-01702-00679)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emily M. Campisano | 27 | wife | — | Massachusetts |
| 42 | Marie T. Campisano | 3 | daughter | — | Massachusetts |
| 43 | Robert E. Murphy | 33 | head | Engineer | Eire |
| 44 | Catherine M. Murphy | 38 | wife | — | Eire |
| 45 | Robert F. Murphy | 7 | son | — | Massachusetts |
| 46 | Dorothy T. Murphy | 5 | daughter | — | Massachusetts |
| 47 | Loretta M. Murphy | 3 | daughter | — | Massachusetts |
| 48 | Michael J. Vaughan | 52 | head | Laborer | Eire |
| 49 | Marie A. Vaughan | 44 | wife | — | Eire |
| 50 | Mary T. Vaughan THIS PERSON | 16 | daughter | — | Massachusetts |
| 51 | John M. Vaughan | 14 | son | — | Massachusetts |
| 52 | George J. Vaughan | 13 | son | — | Massachusetts |
| 53 | Thomas Vaughan | 11 | son | — | Massachusetts |
| 54 | Francis Vaughan | 9 | son | — | Massachusetts |
| 55 | Joseph Vaughan | 8 | son | — | Massachusetts |
| 56 | Lawrence Vaughan | 5 | son | — | Massachusetts |
| 57 | Elizabeth A. Vaughan | 3 | daughter | — | Massachusetts |
| 58 | Joseph L. Mclaughlin | 60 | head | Garage Man | Massachusetts |
| 59 | James J. O'Brien | 38 | nephew | Salesman | Massachusetts |
| 60 | Mary M. O'Brien | 36 | niece | Clerk | Massachusetts |
| 61 | James J. Jr. O'Brien | 2 | son | — | Massachusetts |
| 62 | Patrick J. Hines | 45 | head | Stat. Fireman | Eire |
| 63 | Mollie Hines | 45 | wife | — | Eire |
| 64 | Mary L. Hines | 8 | daughter | — | Massachusetts |
| 65 | Joseph P. Hines | 6 | son | — | Massachusetts |
| 66 | Thomas J. Hines | 5 | son | — | Massachusetts |
| 67 | Patricia A. Hines | 2 | daughter | — | Massachusetts |
| 68 | Mary E. Mcelroy | 46 | head | — | Massachusetts |
| 69 | Joseph F. Mcelroy | 14 | son | — | Massachusetts |
| 70 | Marie N. Mcelroy | 12 | daughter | — | Massachusetts |
| 71 | Paul L. Mcelroy | 7 | son | — | Massachusetts |
| 72 | Harry Needle | 40 | head | Operator | Russia |
| 73 | Dora Needle | 37 | wife | — | Russia |
| 74 | Melvin Needle | 8 | son | — | Massachusetts |
| 75 | Carol R. Needle | 3 | daughter | — | Massachusetts |
| 76 | Alexander Cherrie | 35 | head | Proprietor | Russia |
| 77 | Mary E. Cherrie | 31 | wife | Bookkeeper | Massachusetts |
| 78 | Samuel Hyren | 37 | head | Salesman | Estonia |
| 79 | Sara Hyren | 32 | wife | — | Russia |
| 80 | Evelyn H. Hyren | 8 | daughter | — | Massachusetts |
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)