MS
Mary Souza — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Souza across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 10-person household.
Age 33
b. ~1897
Female
Spouse
Born: Portugal
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Souza |
| Given Name | Mary G. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Portugal |
| Naturalization Status | Alien |
| Year of Immigration | 1913 |
| Age at First Marriage | 18 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1897 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Souza | Son | — | 5 | ~1925 |
| Edward Souza | Son | — | 4 | ~1926 |
| Anthony Souza | Son | — | 12 | ~1918 |
| Frank Markos | Other | — | 30 | ~1900 |
| Nellie Souza | Daughter | — | 13 | ~1917 |
| Mary Silva | Other | — | 68 | ~1862 |
| John Souza | Son | — | 7 | ~1923 |
| Henry Souza | Son | — | 6 | ~1924 |
| Anthony Souza | Head | — | 34 | ~1896 |
| Mary Souza | Spouse | — | 33 | ~1897 |
Census Appearances
1930
Middlesex, Massachusetts
Spouse, age 33
Middlesex, Massachusetts · implied b. ~1897 — 10 household members
| Surname | Souza |
| Given Name | Mary G. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Portugal |
| Naturalization Status | Alien |
| Year of Immigration | 1913 |
| Age at First Marriage | 18 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1940
Middlesex-County, Massachusetts
Head, age 43
Middlesex-County, Massachusetts · implied b. ~1897 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sousa |
| Given Name | Mary G. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Lowell City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | First papers filed |
| Occupation | Seamstress |
| Industry | Sewing Project |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 513 |
| Highest Grade | H 6 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
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.
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This person
Anchor record
Mary Souza
Spouse · 1930 · age 33 · b. ~1897 · Massachusetts
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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:massachusettscensus00reel922:0417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael Marjakin | 42 | Head | Merchant | Armenia |
| 2 | Lucy Marjakin | 35 | Wife | — | Armenia |
| 3 | Harold Marjakin | 9 | Son | — | Massachusetts |
| 4 | Rose Marjakin | 5 | Daughter | — | Massachusetts |
| 5 | Manuel Freitas | 53 | Head | Laborer | Portugal |
| 6 | Mary Freitas | 55 | Wife | — | Portugal |
| 7 | Manuel Jr. Freitas | 24 | Son | Barber | Portugal |
| 8 | John Freitas | 17 | Son | Barber | Portugal |
| 9 | Joseph Freitas | 13 | Son | — | Portugal |
| 10 | John J. Vorek | 38 | Head | Mixer | Austria |
| 11 | Mary A. Vorek | 38 | Wife | — | Massachusetts |
| 12 | Dorothy Vorek | 7 | Daughter | — | Massachusetts |
| 13 | Louise Vorek | 7 | Daughter | — | Massachusetts |
| 14 | Marderos Krikorian | 40 | Head | Barber | Turkey |
| 15 | Tamaz Krikorian | 42 | Wife | — | Turkey |
| 16 | Michael Krikorian | 16 | Son | — | Massachusetts |
| 17 | Kevork Krikorian | 14 | Son | — | Massachusetts |
| 18 | Anthony F. Souza | 34 | Head | Truck Driver | Massachusetts |
| 19 | Mary G. Souza THIS PERSON | 33 | Wife | — | Portugal |
| 20 | Nellie Souza | 13 | Daughter | — | Massachusetts |
| 21 | Anthony Jr. Souza | 12 | Son | — | Massachusetts |
| 22 | John Souza | 7 | Son | — | Massachusetts |
| 23 | Henry Souza | 6 | Son | — | Massachusetts |
| 24 | James Souza | 5 | Son | — | Massachusetts |
| 25 | Edward Souza | 4 | Son | — | Massachusetts |
| 26 | Mary Silva | 68 | Mother-in-law | — | Portugal |
| 27 | Frank S. Markos | 30 | Sister-in-law | Packer | Portugal |
| 28 | Rose E. Mcnulty | 56 | Head | Weaver | Massachusetts |
| 29 | Margaret F. Mcnulty | 54 | Sister | Weaver | Massachusetts |
| 30 | Mary Mcnulty | 52 | Sister | Napper | Ireland |
| 31 | Hugh H. Ab. Mcnulty | 49 | Brother | Lead Burner | Northern Ireland |
| 32 | Mary D. Mediros | 40 | Head | Drawing-In-Room | Portugal |
| 33 | Frank D. Mediros | 21 | Son | Truck Driver | Massachusetts |
| 34 | Mary L. Mediros | 19 | Daughter-in-law | Packer | Massachusetts |
| 35 | Nelson D. Mediros | 19 | Son | Polisher | Massachusetts |
| 36 | — | None | — | — | — |
| 37 | Carl R. Fox | 32 | Head | Stonecutter | Minnesota |
| 38 | Lucille M. Fox | 31 | Wife | — | Iowa |
| 39 | Bryan G. Fox | 10 | Son | — | Minnesota |
| 40 | Charlotte L. Fox | 8 | Daughter | — | Minnesota |
| 41 | James E. Fox | 5 | Son | — | Minnesota |
| 42 | William J. Arnold | 37 | Head | Teamster | Massachusetts |
| 43 | Mary E. Arnold | 35 | Wife | — | Massachusetts |
| 44 | — | None | — | — | — |
| 45 | James A. Delehanty | 27 | Head | Repair-Man | Massachusetts |
| 46 | Anna M. Delehanty | 23 | Wife | — | Massachusetts |
| 47 | James J. Delehanty | 2 | Son | — | Massachusetts |
| 48 | John Sherman | 58 | Head | Laborer | Irish Free State |
| 49 | Nellie Sherman | 48 | Wife | — | Irish Free State |
| 50 | John P. Sherman | 20 | Son | Orderly | Massachusetts |
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)