MV
Mary Vaughan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Vaughan across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Thomas & Mary — first a daughter (b.~1912), then head of a 9-person household.
Age 18
b. ~1912
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Vaughan |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lexington Town |
| Est. Birth Year | ~1912 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Vaughan | Son | — | 16 | ~1914 |
| Douglas Vaughan | Son | — | 11 | ~1919 |
| Ruth Vaughan | Daughter | — | 4 | ~1926 |
| Anna Vaughan | Spouse | — | 44 | ~1886 |
| Mary Vaughan | Daughter | — | 18 | ~1912 |
| James Vaughan | Head | — | 46 | ~1884 |
| Arthur Vaughan | Son | — | 9 | ~1921 |
| Doris Vaughan | Daughter | — | 7 | ~1923 |
| John Vaughan | Son | — | 13 | ~1917 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Vaughan |
| Given Name | Mae L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 18
Middlesex, Massachusetts · implied b. ~1912 — 9 household members
| Surname | Vaughan |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 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
Daughter, age 29
Middlesex-County, Massachusetts · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Vaughan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Cambridge City |
| 1935 Residence (County) | Middlesex |
| Occupation | Secretary |
| Industry | Private Accountant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Vaughan (~0.92 confidence) and mother Mary Vaughan (~0.92 confidence) and father James Vaughan (~0.92 confidence) and father Alfred Vaughan (~0.92 confidence) and mother Anna Vaughan (~0.92 confidence) and mother Amanda Vaughan (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Vaughan
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Vaughan
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
James Vaughan
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Alfred Vaughan
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Anna Vaughan
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Amanda Vaughan
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Vaughan
Daughter · 1930 · age 18 · b. ~1912 · Massachusetts
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Sibling
John Vaughan
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Vaughan
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Vaughan
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Douglas Vaughan
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Vaughan
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Vaughan
Sibling · 1930 · 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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel919:0858)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Violet M Thompson | 18 | Daughter | — | Massachusetts |
| 2 | Francis Thompson | 46 | Brother | Wholesale | Irish Free State |
| 3 | Margaret Thompson | 48 | Sister | — | Irish Free State |
| 4 | John J Sullivan | 50 | Head | Inspector | Irish Free State |
| 5 | Mary Sullivan | 51 | Wife | — | Irish Free State |
| 6 | James J Sullivan | 21 | Son | Chauffeur | Massachusetts |
| 7 | Mary A Sullivan | 20 | Daughter | Operator | Massachusetts |
| 8 | Elizabeth Sullivan | 18 | Daughter | Operator | Massachusetts |
| 9 | John J Sullivan | 17 | Son | — | Massachusetts |
| 10 | Timothy Sullivan | 13 | Son | — | Massachusetts |
| 11 | Thomas Sullivan | 11 | Son | — | Massachusetts |
| 12 | John S Gullgren | 44 | Head | Proprietor | Sweden |
| 13 | Ella B Gullgren | 46 | Wife | — | Massachusetts |
| 14 | Morris E Drake | 54 | Head | Manager | Massachusetts |
| 15 | Marion A Drake | 55 | Wife | — | Massachusetts |
| 16 | Barbara A Drake | 18 | Daughter | — | Massachusetts |
| 17 | Fred W Burgess | 49 | Head | Laborer | Canada-English |
| 18 | Sarah J Burgess | 43 | Wife | — | Canada-English |
| 19 | Walter J Burgess | 24 | Son | Laborer | Massachusetts |
| 20 | Fred A Burgess | 21 | Son | Laborer | Massachusetts |
| 21 | Wilfred E Burgess | 20 | Son | Laborer | Massachusetts |
| 22 | Lloyd L Burgess | 16 | Son | — | Massachusetts |
| 23 | Essie M Burgess | 14 | Daughter | — | Massachusetts |
| 24 | Michael Powers | 59 | Head | Laborer | Irish Free State |
| 25 | Margaret Powers | 52 | Wife | — | Irish Free State |
| 26 | Mary A Powers | 30 | Daughter | — | Massachusetts |
| 27 | James Callahan | 65 | Head | — | Massachusetts |
| 28 | Margaret Callahan | 24 | Daughter | Saleslady | Massachusetts |
| 29 | James J Mcdonough | 61 | Head | Mason | Massachusetts |
| 30 | Katherine M Mcdonough | 59 | Wife | — | Massachusetts |
| 31 | Theresa A Mcdonough | 27 | Daughter | Typist | Massachusetts |
| 32 | John J Mcdonough | 25 | Son | Attendant | Massachusetts |
| 33 | James F Mcdonough | 22 | Son | Mason | Massachusetts |
| 34 | Gertrude E Mcdonough | 19 | Daughter | Operator | Massachusetts |
| 35 | Rita Mcdonough | 15 | Daughter | — | Massachusetts |
| 36 | James H Vaughan | 46 | Head | Officer | Massachusetts |
| 37 | Anna F Vaughan | 44 | Wife | — | Massachusetts |
| 38 | Mary M Vaughan THIS PERSON | 18 | Daughter | — | Massachusetts |
| 39 | James F Vaughan | 16 | Son | — | Massachusetts |
| 40 | John H Vaughan | 13 | Son | — | Massachusetts |
| 41 | Douglas E Vaughan | 11 | Son | — | Massachusetts |
| 42 | Arthur J Vaughan | 9 | Son | — | Massachusetts |
| 43 | Doris A Vaughan | 7 | Daughter | — | Massachusetts |
| 44 | Ruth E Vaughan | 4 | Daughter | — | Massachusetts |
| 45 | Bartholomew Connors | 60 | Head | Farmer | Irish Free State |
| 46 | Julia Connors | 59 | Wife | — | Irish Free State |
| 47 | Edward J Connors | 29 | Son | Farmer | Massachusetts |
| 48 | John J Connors | 24 | Son | Farmer | Massachusetts |
| 49 | Joseph H Valliere | 42 | Head | Operator | Massachusetts |
| 50 | Helen F Valliere | 41 | Wife | — | Massachusetts |
Pedigree Summary
Mary + 6 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)