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.~1922), then head of a 11-person household.
Age 18
b. ~1922
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 | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1922 |
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 |
|---|---|---|---|---|
| Catherine Souza | Daughter | — | 2 | ~1938 |
| John Souza | Son | — | 17 | ~1923 |
| Joseph Souza | Son | — | 9 | ~1931 |
| Anna Souza | Daughter | — | 15 | ~1925 |
| Manuel Souza | Son | — | 12 | ~1928 |
| Manuel Souza | Head | — | 39 | ~1901 |
| Mary Souza | Daughter | — | 18 | ~1922 |
| Cecelia Souza | Daughter | — | 7 | ~1933 |
| Clara Souza | Daughter | — | 14 | ~1926 |
| Mary Souza | Spouse | — | 43 | ~1897 |
| Loretta Souza | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 8
Middlesex, Massachusetts · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sousa |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Portugal |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 18
Middlesex-County, Massachusetts · implied b. ~1922 — 11 household members
| Surname | Souza |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | Hs 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 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 18 · b. ~1922 · Massachusetts
★ You are viewing this record
Sibling
Clara Souza
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Souza
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Souza
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Souza
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecelia Souza
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Souza
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Manuel Souza
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Souza
Sibling · 1940 · age 15
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-t0627-01702-00615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ellen Carmichael | 68 | Head | — | Maine |
| 2 | James Carmichael | 33 | Son | Taxi-Driver | Massachusetts |
| 3 | Joseph Carmichael | 28 | Son | Taxi-Driver | Massachusetts |
| 4 | Joseph Freitas | 34 | Son-in-law | Taxi-Driver | Massachusetts |
| 5 | Mary Freitas | 31 | Daughter | — | Massachusetts |
| 6 | John Freitas | 4 | Grandson | — | Massachusetts |
| 7 | Mary E. Freitas | 1 | Granddaughter | — | Massachusetts |
| 8 | Romeo D'Agice | 24 | Head | Branch Manager | Massachusetts |
| 9 | Georgiana D'Agice | 23 | Wife | — | Massachusetts |
| 10 | Robert D'Agice | 4 | Son | — | Massachusetts |
| 11 | Mary D'Agice | 58 | Sister | Dressmaker | Massachusetts |
| 12 | Anna Durant | 63 | Head | — | Eire |
| 13 | Mary Durant | 39 | Daughter | Secretary | Massachusetts |
| 14 | John Randolph | 32 | Head | Cutter | Massachusetts |
| 15 | Marie Randolph | 24 | Wife | Linker | Massachusetts |
| 16 | Howard Mcnamara | 39 | Head | Printer | Massachusetts |
| 17 | Margaret Mcnamara | 38 | Wife | — | Massachusetts |
| 18 | James Mcnamara | 18 | Son | Bus Boy | Massachusetts |
| 19 | Howard Mcnamara | 16 | Son | — | Massachusetts |
| 20 | Bertha Marks | 55 | Head | Laundress | Canada-English |
| 21 | Andrew B. Leonard | 85 | Head | — | Canada-English |
| 22 | Walsh Frederick Leonard | 15 | Ward | — | Massachusetts |
| 23 | Gertrude Skeffington | 44 | Head | Printing Inspector | Massachusetts |
| 24 | Frank Skeffington | 27 | Son | Spring Tester | Massachusetts |
| 25 | Charles Bigatti | 27 | Nephew | Laborer | Massachusetts |
| 26 | Manuel Souza | 39 | Head | Laborer | Massachusetts |
| 27 | Mary Souza | 43 | Wife | — | Portugal |
| 28 | Mary Souza THIS PERSON | 18 | Daughter | — | Massachusetts |
| 29 | John Souza | 17 | Son | — | Massachusetts |
| 30 | Anna Souza | 15 | Daughter | — | Massachusetts |
| 31 | Clara Souza | 14 | Daughter | — | Massachusetts |
| 32 | Manuel Souza | 12 | Son | — | Massachusetts |
| 33 | Joseph Souza | 9 | Son | — | Massachusetts |
| 34 | Cecelia Souza | 7 | Daughter | — | Massachusetts |
| 35 | Loretta Souza | 5 | Daughter | — | Massachusetts |
| 36 | Catherine Souza | 2 | Daughter | — | Massachusetts |
| 37 | Arthur Payette | 63 | Head | Watchman | Massachusetts |
| 38 | Catherine Payette | 64 | Wife | — | Massachusetts |
| 39 | Arthur Payette | 20 | Son | New Worker | Massachusetts |
| 40 | Angelina Marks | 56 | Head | — | Portugal |
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)