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Mary Tobin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Tobin across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1908), then head of a 6-person household.
Age 32
b. ~1908
Female
Spouse
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Tobin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Boston City |
| Est. Birth Year | ~1908 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Tobin | Son | — | ~1940 | |
| James Tobin | Son | — | 4 | ~1936 |
| Mary Tobin | Spouse | — | 32 | ~1908 |
| Ellen Tobin | Daughter | — | 5 | ~1935 |
| John Tobin | Head | — | 36 | ~1904 |
| Rita Tobin | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Middlesex, Massachusetts
Other, age 23
Middlesex, Massachusetts · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tobin |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Irish Free State |
| Naturalization Status | First papers filed |
| Year of Immigration | 1925 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Maid |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | irish free state |
1940
Suffolk-County, Massachusetts
Spouse, age 32
Suffolk-County, Massachusetts · implied b. ~1908 — 6 household members
| Surname | Tobin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
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
Spouse · 1940 · age 32 · b. ~1908 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01682-00186)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James E. Driscoll | 54 | Head | Erector | Massachusetts |
| 42 | Mary E. Driscoll | 44 | Wife | — | Massachusetts |
| 43 | Anne T. Driscoll | 22 | Daughter | Stenographer | Massachusetts |
| 44 | Paul M. Driscoll | 16 | Son | — | Massachusetts |
| 45 | James Driscoll | 10 | Son | — | Massachusetts |
| 46 | Lawrence Driscoll | 4 | Son | — | Massachusetts |
| 47 | Nellie Mahoney | 60 | Aunt | — | Massachusetts |
| 48 | John F. Tobin | 36 | Head | Laborer | Irish Free State |
| 49 | Mary Tobin THIS PERSON | 32 | Wife | — | Irish Free State |
| 50 | Ellen Tobin | 5 | Daughter | — | Massachusetts |
| 51 | James Tobin | 4 | Son | — | Massachusetts |
| 52 | Rita Tobin | 2 | Daughter | — | Massachusetts |
| 53 | John M. Tobin | 0 | Son | — | Massachusetts |
| 54 | Francis W. Mclaren | 31 | Head | Chauffeur | Massachusetts |
| 55 | Lillian Mclaren | 32 | Wife | — | Massachusetts |
| 56 | Joan F. Mclaren | 3 | Daughter | — | Massachusetts |
| 57 | Nancy Mclaren | 1 | Daughter | — | Massachusetts |
| 58 | Elizabeth A. Bonfield | 87 | Head | — | British West Indies |
| 59 | Katherine Morrison | 63 | Lodger | — | British West Indies |
| 60 | Mary M. Freeman | 48 | Lodger | — | Kentucky |
| 61 | Dora Mitchell | 38 | Lodger | Cook | British West Indies |
| 62 | Extra Line Mitchell | None | — | — | — |
| 63 | Extra Line Mitchell | None | — | — | — |
| 64 | Antonio Volante | 54 | Head | Salesman | Italy |
| 65 | Celesta Volante | 50 | Wife | — | Italy |
| 66 | Mario Volante | 28 | Daughter | Shoe Worker | Massachusetts |
| 67 | Samuel Volante | 25 | Son | Mechanic | Massachusetts |
| 68 | Frank K. Bailey | 68 | Head | — | New Hampshire |
| 69 | Margaret E. Bailey | 66 | Wife | — | Massachusetts |
| 70 | Thomas Hannon | 44 | Son-in-law | Laborer | Massachusetts |
| 71 | Mary Hannon | 40 | Daughter | — | Massachusetts |
| 72 | Mary M. Hannon | 20 | Granddaughter | Sorter | Massachusetts |
| 73 | Thomas Hannon | 16 | Grandson | — | Massachusetts |
| 74 | Francis Hannon | 6 | Grandson | — | Massachusetts |
| 75 | Albert Littleton | 47 | Head | Stationary Engineer | New Jersey |
| 76 | Estelle Littleton | 45 | Wife | — | Ohio |
| 77 | Thelma Littleton | 15 | Daughter | — | Massachusetts |
| 78 | George F. Richards | 62 | Head | — | Pennsylvania |
| 79 | Alice Richards | 57 | Wife | — | Massachusetts |
| 80 | George H. Jr. Richards | 30 | Son | Porter | Massachusetts |
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)