MS
Mary Souza — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Souza across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 9-person household.
Age 25
b. ~1915
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Souza |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Cambridge |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Factory |
| Class of Worker | PW |
| Hours Worked | 25 |
| Income (1939) | 570 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Cambridge |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Deolinda Souza | Spouse | — | 56 | ~1884 |
| Cecilia Souza | Daughter | — | 17 | ~1923 |
| Mary Souza | Daughter | — | 25 | ~1915 |
| Manuel Souza | Head | — | 56 | ~1884 |
| Bernard Souza | Son | — | 13 | ~1927 |
| Alice Souza | Daughter | — | 21 | ~1919 |
| Lusinda Souza | Daughter | — | 15 | ~1925 |
| Manuel Souza | Son | — | 18 | ~1922 |
| Joseph Souza | Son | — | 23 | ~1917 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 15
Middlesex, Massachusetts · implied b. ~1915 — 48 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sousa |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 25
Middlesex-County, Massachusetts · implied b. ~1915 — 9 household members
| Surname | Souza |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Cambridge |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | Factory |
| Class of Worker | PW |
| Hours Worked | 25 |
| Income (1939) | 570 |
| Highest Grade | No 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 Souza across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Souza
Daughter · 1940 · age 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Alice Souza
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Souza
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Souza
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Manuel Souza
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lusinda Souza
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecilia Souza
Sibling · 1940 · age 17
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-t0627-01683-00564)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adolph Lindsey | 20 | Son-in-law | Mixer | Massachusetts |
| 2 | Mary Winches | 65 | Wife | — | Lithuania |
| 3 | John Winches | 77 | Head | — | Lithuania |
| 4 | Manuel Souza | 56 | Head | — | Portugal |
| 5 | Deolinda Souza | 56 | Wife | — | Portugal |
| 6 | Mary Souza THIS PERSON | 25 | Daughter | Laborer | Massachusetts |
| 7 | Joseph Souza | 23 | Son | Laborer | Massachusetts |
| 8 | Alice Souza | 21 | Daughter | Laborer | Massachusetts |
| 9 | Manuel Jr Souza | 18 | Son | Laborer | Massachusetts |
| 10 | Cecilia Souza | 17 | Daughter | — | Massachusetts |
| 11 | Lusinda Souza | 15 | Daughter | — | Massachusetts |
| 12 | Bernard Souza | 13 | Son | — | Massachusetts |
| 13 | Rose Zukuskas | 65 | Head | — | Lithuania |
| 14 | Thomas Zukuskas | 29 | Son | Laborer | Massachusetts |
| 15 | Vincentia Zukuskas | 29 | Daughter | Winder | Massachusetts |
| 16 | John Zukuskas | 25 | Son | Laborer | Massachusetts |
| 17 | Andrew Karpinski | 61 | Head | Laborer | Poland |
| 18 | Vincentia Karpinski | 54 | Wife | — | Poland |
| 19 | John Sarnosky | 56 | Head | Printer | Lithuania |
| 20 | Mary Sarnosky | 47 | Wife | — | Lithuania |
| 21 | Helen Sarnosky | 26 | Daughter | Inspector | Massachusetts |
| 22 | Michael Paukstis | 47 | Head | Butcher | Lithuania |
| 23 | Frances Paukstis | 43 | Wife | — | Lithuania |
| 24 | Helen Paukstis | 20 | Daughter | Laborer | Massachusetts |
| 25 | John Paukstis | 19 | Son | Box Boy | Massachusetts |
| 26 | Michael Jr Paukstis | 18 | Son | Laborer | Massachusetts |
| 27 | Francis Paukstis | 12 | Son | New Worker | Massachusetts |
| 28 | Paul Bleznik | 48 | Head | Rubber | Russia |
| 29 | Mary Bleznik | 46 | Wife | — | Austria |
| 30 | William Bleznik | 24 | Son | Truck Driver | Massachusetts |
| 31 | Myron Bleznik | 21 | Son | Printer | Massachusetts |
| 32 | Catherine Cawley | 58 | Head | — | Massachusetts |
| 33 | Mary Cawley | 32 | Daughter | Rubber Worker | Massachusetts |
| 34 | George Cawley | 30 | Son | Truck Driver | Massachusetts |
| 35 | Margaret Cawley | 23 | Daughter | Rubber Worker | Massachusetts |
| 36 | Herbert Morehouse | 53 | Head | Clerk | Massachusetts |
| 37 | Mabel Morehouse | 53 | Wife | — | Massachusetts |
| 38 | George Morehouse | 48 | Brother | Laborer | Massachusetts |
| 39 | Mary Spilaine | 65 | Aunt-in-law | — | Massachusetts |
| 40 | Josephine Spilaine | 70 | Aunt-in-law | — | Massachusetts |
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)