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Mary Martin — 1920 US Census Record
Model Tree available1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Martin across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Mary — first a daughter (b.~1911), then head of a 6-person household.
Age 9
b. ~1911
Female
Daughter
Born: Portugal
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Martin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Portugal |
| Year of Immigration | 1916 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Additional Details | |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Martin | Daughter | — | 9 | ~1911 |
| Abelula Martin | Daughter | — | 4 | ~1916 |
| John Martin | Head | — | 44 | ~1876 |
| Ralph Gomes | Other | — | 19 | ~1901 |
| John Martin | Son | — | 11 | ~1909 |
| Mary Martin | Spouse | — | 32 | ~1888 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 9
Middlesex, Massachusetts · implied b. ~1911 — 6 household members
| Surname | Martin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Portugal |
| Year of Immigration | 1916 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1930
Middlesex, Massachusetts
Daughter, age 18
Middlesex, Massachusetts · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martins |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Portugal |
| Naturalization Status | Naturalized |
| Year of Immigration | 1916 |
| 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
Spouse, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martins |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Alien |
| Occupation | Factory worker |
| Industry | Rubber Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 476 |
| Highest Grade | No 8 |
| 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 Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and mother Mary Martin (~0.92 confidence) and father John Martins (~0.92 confidence) and mother Mary Martins (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mary Martin
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
John Martins
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Mary Martins
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Martin
Daughter · 1920 · age 9 · b. ~1911 · Massachusetts
★ You are viewing this record
Sibling
John Martin
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Abelula Martin
Sibling · 1920 · age 4
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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu707unit:0023)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Patrick O'Leary | 50 | Head | Laborer | Ireland |
| 52 | Nora Donovan | 35 | Lodger | — | Ireland |
| 53 | John Martin | 44 | Head | Laborer | Portugal |
| 54 | Mary Martin | 32 | Wife | — | Portugal |
| 55 | John Martin | 11 | Son | — | Portugal |
| 56 | Mary Martin THIS PERSON | 9 | Daughter | — | Portugal |
| 57 | Abelula Martin | 4 | Daughter | — | Portugal |
| 58 | Ralph Gomes | 19 | Lodger | Laborer | Massachusetts |
| 59 | Frank Chudzynski | 28 | Head | Laborer | Poland |
| 60 | Mary Chudzynski | 19 | Wife | — | Poland |
| 61 | Stella Chudzynski | 1 | Daughter | — | Massachusetts |
| 62 | Mary Chudzynski | 0 | Daughter | — | Massachusetts |
| 63 | Michael Consolazio | 38 | Head | Laborer | Italy |
| 64 | Lucy Consolazio | 42 | Wife | — | Italy |
| 65 | Josephine Consolazio | 13 | Daughter | — | Massachusetts |
| 66 | Annie Consolazio | 11 | Daughter | — | Massachusetts |
| 67 | Veneranda Consolazio | 9 | Son | — | Massachusetts |
| 68 | Carlo Consolazio | 6 | Son | — | Massachusetts |
| 69 | Amelia Consolazio | 4 | Son | — | Massachusetts |
| 70 | William Consolazio | 1 | Son | — | Massachusetts |
| 71 | Martin Ferracone | 32 | Head | Laborer | Italy |
| 72 | Elizabeth Ferracone | 28 | Wife | — | Italy |
| 73 | Rita Ferracone | 1 | Daughter | — | Massachusetts |
| 74 | Stanley Jankun | 28 | Head | Laborer | Russia Vilna |
| 75 | Amelia Jankun | 24 | Wife | — | Russia Vilna |
| 76 | Eddie Jankun | 2 | Daughter | — | Massachusetts |
| 77 | Stanley Jankun | 0 | Son | — | Massachusetts |
| 78 | John Jankun | 52 | Head | Laborer | Russia Vilna |
| 79 | Sophia Jankun | 48 | Wife | — | Russia Vilna |
| 80 | James Jankun | 24 | Son | Clerk | Russia Vilna |
| 81 | Walter Jankun | 20 | Son | Laborer | Russia Vilna |
| 82 | Beatrice Jankun | 18 | Daughter | Packer | Russia Vilna |
| 83 | William Jankun | 30 | Head | Laborer | Russia Vilna |
| 84 | Veronica Jankun | 25 | Wife | — | Russia Vilna |
| 85 | Joseph Jankun | 2 | Son | — | Massachusetts |
| 86 | John Szulanski | 33 | Head | Laborer | Poland |
| 87 | Stephana Szulanski | 28 | Wife | — | Poland |
| 88 | Francis Szulanski | 5 | Son | — | Massachusetts |
| 89 | Stephana Szulanski | 3 | Daughter | — | Massachusetts |
| 90 | Nicholas Szulanski | 23 | Brother | Laborer | Poland |
| 91 | Alexander Bobacz | 40 | Head | Laborer | Poland |
| 92 | Lucy Bobacz | 30 | Wife | — | Poland |
| 93 | Stephen Bobacz | 10 | Son | — | Massachusetts |
| 94 | Alexander Bobacz | 9 | Son | — | Massachusetts |
| 95 | Stella Bobacz | 6 | Daughter | — | Massachusetts |
| 96 | Henry Bobacz | 4 | Son | — | Massachusetts |
| 97 | George Bobacz | 2 | Son | — | Massachusetts |
| 98 | John Walachiewicz | 32 | Head | Laborer | Lithuania |
| 99 | Paulina Walachiewicz | 32 | Wife | — | Lithuania |
| 100 | Longin Walachiewicz | 1 | Daughter | — | Massachusetts |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)