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Mary Barr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Barr across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Barr |
| Given Name | Mary T. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | S 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Everett City |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Barr | Daughter | — | 12 | ~1928 |
| Anna Barr | Daughter | — | 10 | ~1930 |
| Mary Barr | Daughter | — | 17 | ~1923 |
| Hugh Barr | Son | — | 23 | ~1917 |
| Daniel Barr | Son | — | 25 | ~1915 |
| Anna Barr | Spouse | — | 44 | ~1896 |
| James Barr | Head | — | 56 | ~1884 |
| Rose Barr | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 1
Middlesex, Massachusetts · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barros |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 8 household members
| Surname | Barr |
| Given Name | Mary T. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett City |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | S 6 |
| 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 Barr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Barr
Daughter · 1940 · age 12 · b. ~1928 · Massachusetts
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Sibling
Mary Barr
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Barr
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Barr
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Barr
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Barr
Sibling · 1940 · age 25
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
39 people indexed on this census page (nara:1940:m-t0627-01604-00528)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M. Moulison | 16 | Daughter | — | Massachusetts |
| 2 | Joseph E. Jr. Moulison | 14 | Son | — | Massachusetts |
| 3 | Margaret Moulison | 11 | Daughter | — | Massachusetts |
| 4 | Everett P. Parker | 28 | Head | Laborer | Massachusetts |
| 5 | Mae I. Parker | 28 | Wife | — | Massachusetts |
| 6 | Joyce A. Parker | 8 | Daughter | — | Massachusetts |
| 7 | Hazel B. Parker | 7 | Daughter | — | Massachusetts |
| 8 | Everett L. Jr. Parker | 2 | Son | — | Massachusetts |
| 9 | Stacey B. Parker | 65 | Mother | Practical Nurse | Massachusetts |
| 10 | Hedwig Olsen | 67 | Head | Housekeeper | Sweden |
| 11 | James Barr | 56 | Head | Foreman | Eire |
| 12 | Anna M. Barr | 44 | Wife | — | Northern Ireland |
| 13 | Daniel B. Barr | 25 | Son | Timekeeper | Massachusetts |
| 14 | Hugh S. Barr | 23 | Son | Clerk | Massachusetts |
| 15 | Rose F. Barr | 20 | Daughter | Switchboard Operator | Massachusetts |
| 16 | Mary A. Barr | 17 | Daughter | — | Massachusetts |
| 17 | Mary T. Barr THIS PERSON | 12 | Daughter | — | Massachusetts |
| 18 | Anna G. Barr | 10 | Daughter | — | Massachusetts |
| 19 | Gerald Riccio | 59 | Head | Barber | Italy |
| 20 | Nathina Riccio | 43 | Wife | — | Italy |
| 21 | Eleanor Riccio | 24 | Daughter | Book-Binder | Massachusetts |
| 22 | Andrew Riccio | 19 | Son | Broom Finisher | Massachusetts |
| 23 | Edward Riccio | 18 | Son | — | Massachusetts |
| 24 | Gerald Riccio | 12 | Son | — | Massachusetts |
| 25 | Samuel Visconti | 30 | Head | Blocker | Italy |
| 26 | Rose M. Visconti | 30 | Wife | — | Massachusetts |
| 27 | Victoria A. Visconti | 7 | Daughter | — | Massachusetts |
| 28 | Samuel R. Visconti | 2 | Son | — | Massachusetts |
| 29 | Anna Peal | 60 | Head | — | Canada English |
| 30 | Robert Gutierrez | 52 | Lodger | Machinist | Chile |
| 31 | Edward P. Zannini | 31 | Head | Violin Player | Italy |
| 32 | Charlotte Zannini | 25 | Wife | — | Canada French |
| 33 | Norman V. Zannini | 5 | Son | — | Massachusetts |
| 34 | Gloria H. Zannini | 4 | Daughter | — | Massachusetts |
| 35 | Edward L. Zannini | 3 | Son | — | Massachusetts |
| 36 | Eleanor L. Zannini | 0 | Daughter | — | Massachusetts |
| 37 | Thomas Ed. O'Neil | 35 | Head | Truck Driver | Massachusetts |
| 38 | Catherine G. O'Neil | 36 | Wife | — | Massachusetts |
| 39 | Edward Favens | 64 | Head | Owner | Canada English |
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)