MJ
Mary John — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary John across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1909), then head of a 8-person household.
Age 21
b. ~1909
Female
Daughter
Born: Albania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | John |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Albania |
| Naturalization Status | Alien |
| Year of Immigration | 1916 |
| Father's Birthplace | Albania |
| Mother's Birthplace | Albania |
| Additional Details | |
| Occupation | Pocket Attendant |
| Industry | Raincoat Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Albanian |
| Birthplace (normalized) | albania |
| Occupation | Pocket Attendant |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1909 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jeanne John | Daughter | — | 12 | ~1918 |
| Mary John | Daughter | — | 21 | ~1909 |
| Athena John | Other | — | 50 | ~1880 |
| James John | Son | — | 9 | ~1921 |
| Nicholas John | Son | — | 19 | ~1911 |
| Philip John | Head | — | 56 | ~1874 |
| Dorothy John | Daughter | — | 13 | ~1917 |
| Kathleen John | Daughter | — | 6 | ~1924 |
Census Appearances
1920
Suffolk, Massachusetts
Daughter, age 12
Suffolk, Massachusetts · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | John |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Albania |
| Year of Immigration | 1915 |
| Naturalization Status | Alien |
| Father's Birthplace | Albania |
| Mother's Birthplace | Albania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Albanian |
| Birthplace (normalized) | albania |
1930
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1909 — 8 household members
| Surname | John |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Albania |
| Naturalization Status | Alien |
| Year of Immigration | 1916 |
| Father's Birthplace | Albania |
| Mother's Birthplace | Albania |
| Occupation | Pocket Attendant |
| Industry | Raincoat Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Albanian |
| Birthplace (normalized) | albania |
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 John across 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary John
Daughter · 1930 · age 21 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Jeanne John
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nicholas John
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen John
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy John
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James John
Sibling · 1930 · age 9
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
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:massachusettscensus00reel915:0181)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Adams | 8 | Daughter | None | Maine |
| 2 | Philip John | 56 | Head | Peddler | Albania |
| 3 | Athena John | 50 | Wife-H | None | Albania |
| 4 | Mary John THIS PERSON | 21 | Daughter | Pocket Attendant | Albania |
| 5 | Nicholas John | 19 | Son | Peddler | Albania |
| 6 | Dorothy John | 13 | Daughter | None | Massachusetts |
| 7 | Jeanne John | 12 | Daughter | None | Massachusetts |
| 8 | James John | 9 | Son | None | Massachusetts |
| 9 | Kathleen John | 6 | Daughter | None | Massachusetts |
| 10 | Salvatore Pagano | 50 | Head | Washer | Italy |
| 11 | Florence Pagano | 30 | Wife-H | Handkerchief Maker | Massachusetts |
| 12 | Anna Pagano | 18 | Daughter | Packer | Massachusetts |
| 13 | Marion Pagano | 16 | Daughter | None | Massachusetts |
| 14 | Vincent Pagano | 15 | Son | Floor Boy | Massachusetts |
| 15 | Yolanda Pagano | 13 | Daughter | None | Massachusetts |
| 16 | Elizabeth Pagano | 11 | Daughter | None | Massachusetts |
| 17 | Mafalda Pagano | 5 | Daughter | None | Massachusetts |
| 18 | Mary Pagano | 3 | Daughter | None | Massachusetts |
| 19 | James Trianda | 62 | Head | Salesman | Italy |
| 20 | Mary J. Trianda | 44 | Wife-H | None | Italy |
| 21 | John Trianda | 30 | Son | Salesman | Massachusetts |
| 22 | Patrick Trianda | 25 | Son | Helper | Massachusetts |
| 23 | Nicolas Trianda | 21 | Son | Chauffeur | Massachusetts |
| 24 | Louis Trianda | 17 | Son | None | Massachusetts |
| 25 | Annie Trianda | 14 | Daughter | None | Massachusetts |
| 26 | Mary Trianda | 9 | Daughter | None | Massachusetts |
| 27 | Joseph Piscitello | 56 | Head | Brine Room | Italy |
| 28 | Catherine Piscitello | 45 | Wife-H | None | Italy |
| 29 | Sam Piscitello | 19 | Son | Messenger Boy | Italy |
| 30 | Salvatore Bonacci | 41 | Head | Dishwasher | Italy |
| 31 | Rosa Bonacci | 39 | Wife-H | None | Italy |
| 32 | Francis Bonacci | 10 | Son | None | Massachusetts |
| 33 | Joseph Gardoni | 41 | Head | Peddler | Italy |
| 34 | Mary Gardoni | 36 | Wife-H | None | Italy |
| 35 | Theresa Gardoni | 15 | Daughter | None | Massachusetts |
| 36 | Anna Gardoni | 10 | Daughter | None | Massachusetts |
| 37 | Anthony Gardoni | 8 | Son | None | Massachusetts |
| 38 | Philomena Gardoni | 4 | Daughter | None | Massachusetts |
| 39 | Anthony Younnarro | 44 | Head | Trackman | Italy |
| 40 | Mary Younnarro | 32 | Wife-H | None | Italy |
| 41 | Theresa Younnarro | 8 | Daughter | None | Massachusetts |
| 42 | Victoria Younnarro | 7 | Daughter | None | Massachusetts |
| 43 | Margaret Younnarro | 5 | Daughter | None | Massachusetts |
| 44 | Mary Dias | 49 | Head-H | None | Portugal |
| 45 | Hilda Dias | 19 | Daughter | Packer | Massachusetts |
| 46 | Gertrude Dias | 15 | Daughter | Invitation Flower | Massachusetts |
| 47 | Frederick Dias | 11 | Son | None | Massachusetts |
| 48 | George G. Dhima | 46 | Head | Laborer | Albania |
| 49 | Hustodio Tristao | 56 | Head | Longshoreman | Portugal |
| 50 | Mary Tristao | 46 | Wife-H | None | Portugal |
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)