MT
Mary Tobin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Tobin across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 8-person household.
Age 14
b. ~1916
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Tobin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Canada-English |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Maynard Town |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| John Tobin | Son | — | 16 | ~1914 |
| Winifred Tobin | Daughter | — | 17 | ~1913 |
| Jane Tobin | Daughter | — | 13 | ~1917 |
| Elizabeth Tobin | Daughter | — | 11 | ~1919 |
| Mary Tobin | Daughter | — | 14 | ~1916 |
| Francis Tobin | Head | — | 48 | ~1882 |
| Julia Tobin | Daughter | — | 21 | ~1909 |
| Gertrude Tobin | Daughter | — | 10 | ~1920 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 14
Middlesex, Massachusetts · implied b. ~1916 — 8 household members
| Surname | Tobin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Canada-English |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 24
Middlesex-County, Massachusetts · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tobin |
| Given Name | Marjorie M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Clerk-Office |
| Industry | Bakery |
| Class of Worker | PW |
| Hours Worked | 39 |
| Income (1939) | 216 |
| 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 Tobin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Tobin
Daughter · 1930 · age 14 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
John Tobin
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Tobin
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Tobin
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Tobin
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Tobin
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Tobin
Sibling · 1930 · age 10
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:massachusettscensus00reel924:0090)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Francis Tobin | 48 | Head | Spinner | Canada-English |
| 52 | Julia Tobin | 21 | Daughter | Drawtender | Massachusetts |
| 53 | Winifred Tobin | 17 | Daughter | — | Massachusetts |
| 54 | John Tobin | 16 | Son | — | Massachusetts |
| 55 | Mary Tobin THIS PERSON | 14 | Daughter | — | Massachusetts |
| 56 | Jane Tobin | 13 | Daughter | — | Massachusetts |
| 57 | Elizabeth Tobin | 11 | Daughter | — | Massachusetts |
| 58 | Gertrude Tobin | 10 | Daughter | — | Massachusetts |
| 59 | Joseph Sidonovich | 37 | Head | Laborer | Russia |
| 60 | Frances Sidonovich | 33 | Wife | — | Russia |
| 61 | Michael Sidonovich | 7 | Son | — | Massachusetts |
| 62 | Anthony Sidonovich | 1 | Son | — | Connecticut |
| 63 | Robert R. Hatch | 40 | Head | Engineer | Maine |
| 64 | Abbie Hatch | 34 | Wife | — | Massachusetts |
| 65 | Marion Hatch | 12 | Daughter | — | Massachusetts |
| 66 | Geraldine Hatch | 10 | Daughter | — | Massachusetts |
| 67 | Robert L. Hatch | 6 | Son | — | Massachusetts |
| 68 | George A. Degiller | 60 | Head | Engineer | Massachusetts |
| 69 | Gertrude A. Degiller | 29 | Daughter | — | Massachusetts |
| 70 | John Piecurewicz | 31 | Head | Laborer | Poland |
| 71 | Florence Piecurewicz | 27 | Wife | — | Massachusetts |
| 72 | Helen Piecurewicz | 8 | Daughter | — | Massachusetts |
| 73 | John Piecurewicz | 3 | Son | — | Massachusetts |
| 74 | John Lubrainko | 39 | Head | Superintendent | Poland |
| 75 | Sophie Lubrainko | 39 | Wife | — | Poland |
| 76 | John Lubrainko | 9 | Son | — | Massachusetts |
| 77 | Olga Lubrainko | 7 | Daughter | — | Massachusetts |
| 78 | Lucas Lubrainko | 4 | Son | — | Massachusetts |
| 79 | Anna Lubrainko | 3 | Daughter | — | Massachusetts |
| 80 | Jacob Kamesh | 51 | Head | Estimator | Poland |
| 81 | Anastasia Kamesh | 48 | Wife | — | Poland |
| 82 | Frank Kamesh | 24 | Son | — | Massachusetts |
| 83 | Joseph Kamesh | 22 | Son | Paper Mill | Massachusetts |
| 84 | Margaret J. Hoffman | 28 | Daughter | — | Poland |
| 85 | Edward Hoffman | 31 | Son-in-law | Weaver | Massachusetts |
| 86 | Margaret Hoffman | 4 | Granddaughter | — | Massachusetts |
| 87 | Victor Krajis | 40 | Head | Wet Finish | Poland |
| 88 | Ellen Krajis | 40 | Wife | — | Poland |
| 89 | Bronislaw Krajis | 14 | Son | — | Massachusetts |
| 90 | Stanley Krajis | 12 | Son | — | Massachusetts |
| 91 | Veronica Krajis | 8 | Daughter | — | Massachusetts |
| 92 | Laura Krajis | 7 | Daughter | — | Massachusetts |
| 93 | Francis Tyszkiewicz | 50 | Roomer | Wet Finish | Poland |
| 94 | John Sadowich | 45 | Roomer | Wet Finish | Poland |
| 95 | Eric Rutanen | 37 | Head | Card Room | Finland |
| 96 | Eeva Rutanen | 47 | Wife | — | Finland |
| 97 | Paavo Rutanen | 20 | Son | Card Room | Finland |
| 98 | August Dabato | 28 | Head | Mechanic | Poland |
| 99 | Stella Dabato | 26 | Wife | — | Poland |
| 100 | Milton H. Dabato | 3 | Son | — | 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)