MG
Mary Gallagher — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Gallagher across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1908), then head of a 11-person household.
Age 32
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Gallagher |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Comptometrist |
| Industry | Mail Order House |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Comptometrist |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rose Gallagher | Daughter | — | 18 | ~1922 |
| Kathleen Gallagher | Daughter | — | 26 | ~1914 |
| Agnes Gallagher | Daughter | — | 15 | ~1925 |
| Mary Gallagher | Daughter | — | 32 | ~1908 |
| Bertha Gallagher | Daughter | — | 20 | ~1920 |
| Ruth Gallagher | Daughter | — | 13 | ~1927 |
| Lewis Gallagher | Head | — | 51 | ~1889 |
| Henry Gallagher | Son | — | 34 | ~1906 |
| Lewis Gallagher | Son | — | 32 | ~1908 |
| John Gallagher | Son | — | 23 | ~1917 |
| Bridget Gallagher | Spouse | — | 58 | ~1882 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 21
Suffolk, Massachusetts · implied b. ~1909 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gallagher |
| Given Name | Mary E. |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Operator |
| Industry | Telephone |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 32
Suffolk-County, Massachusetts · implied b. ~1908 — 11 household members
| Surname | Gallagher |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Occupation | Comptometrist |
| Industry | Mail Order House |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | H 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 Gallagher across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Gallagher
Daughter · 1940 · age 32 · b. ~1908 · Massachusetts
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Sibling
Agnes Gallagher
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Gallagher
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Gallagher
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Gallagher
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Gallagher
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Gallagher
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Gallagher
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Gallagher
Sibling · 1940 · age 23
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
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-t0627-01674-00564)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alice M. Walsh | 36 | Wife | — | Massachusetts |
| 2 | James F. Walsh | 8 | Son | — | Massachusetts |
| 3 | John J. Walsh | 6 | Son | — | Massachusetts |
| 4 | Patrick Walsh | 2 | Son | — | Massachusetts |
| 5 | Frank Bertsch | 57 | Head | Ry. Mail Clerk | Massachusetts |
| 6 | Mary F. Bertsch | 63 | Wife | — | Massachusetts |
| 7 | Marie J. Bertsch | 27 | Daughter | Stenographer | Massachusetts |
| 8 | Charles Weisslinger | 72 | Head | — | Germany |
| 9 | Matilda Weisslinger | 67 | Wife | — | Massachusetts |
| 10 | Florence Weisslinger | 35 | Daughter | Bookkeeper | Massachusetts |
| 11 | Mary E. Weisslinger | 32 | Daughter | Fur Finisher | Massachusetts |
| 12 | William J. Harvey | 57 | Head | Telephone Installer | Massachusetts |
| 13 | Margaret Harvey | 54 | Wife | — | Massachusetts |
| 14 | William J. Jr. Harvey | 35 | Son | Laborer | Massachusetts |
| 15 | John Harvey | 21 | Son | Chauffeur | Massachusetts |
| 16 | Arthur Harvey | 19 | Son | Stock Boy | Massachusetts |
| 17 | Robert Harvey | 17 | Son | New Worker | Massachusetts |
| 18 | Claire Harvey | 13 | Daughter | — | Massachusetts |
| 19 | Joseph H. Adams | 56 | Head | Salesman | Eire |
| 20 | Della F. Adams | 52 | Wife | — | Eire |
| 21 | Susan S. Adams | 79 | Mother | — | Eire |
| 22 | John Maloney | 30 | Lodger | — | Massachusetts |
| 23 | Thomas F. Farrel | 40 | Head | Policeman | Massachusetts |
| 24 | Eleanor H. Farrel | 40 | Wife | Laundress | Massachusetts |
| 25 | Thomas F. Farrel | 19 | Son | Bell Hop | Massachusetts |
| 26 | Paul Farrel | 16 | Son | — | Massachusetts |
| 27 | Eleanor V. Farrel | 11 | Daughter | — | Massachusetts |
| 28 | Lewis P. Gallagher | 51 | Head | — | Eire |
| 29 | Bridget Gallagher | 58 | Wife | — | Eire |
| 30 | Henry Gallagher | 34 | Son | Asst. Buyer | Massachusetts |
| 31 | Mary E. Gallagher THIS PERSON | 32 | Daughter | Comptometrist | Massachusetts |
| 32 | Lewis J. Gallagher | 32 | Son | Marker | Massachusetts |
| 33 | Kathleen Gallagher | 26 | Daughter | Billing Clerk | Massachusetts |
| 34 | John J. Gallagher | 23 | Son | Shipping Clerk | Massachusetts |
| 35 | Bertha Gallagher | 20 | Daughter | Sorter | Massachusetts |
| 36 | Rose Gallagher | 18 | Daughter | — | Massachusetts |
| 37 | Agnes Gallagher | 15 | Daughter | — | Massachusetts |
| 38 | Ruth Gallagher | 13 | Daughter | — | Massachusetts |
| 39 | Maybelle Supple | 57 | Head | — | Massachusetts |
| 40 | John L. Supple | 31 | Son | Drug Clerk | 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)