MH
Mary Haggerty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Haggerty across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Haggerty |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1926 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Haggerty | Daughter | — | 8 | ~1932 |
| Mary Haggerty | Daughter | — | 14 | ~1926 |
| Dorothy Haggerty | Daughter | — | 10 | ~1930 |
| Joseph Haggerty | Son | — | 12 | ~1928 |
| Theresa Haggerty | Daughter | — | 6 | ~1934 |
| Margaret Haggerty | Head | — | 48 | ~1892 |
| Here Haggerty | Other | — | — | |
| Thomas Haggerty | Son | — | 16 | ~1924 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 3
Suffolk, Massachusetts · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hagerty |
| Given Name | Margaret A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 14
Suffolk-County, Massachusetts · implied b. ~1926 — 8 household members
| Surname | Haggerty |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | H 8 |
| 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 Haggerty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Haggerty
Daughter · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Joseph Haggerty
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Haggerty
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Haggerty
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Haggerty
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Haggerty
Sibling · 1940 · age 16
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-t0627-01678-00021)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Adler | 39 | Head | Florist | Massachusetts |
| 2 | Sadie H. Adler | 37 | Wife | — | Massachusetts |
| 3 | Marie J. Adler | 6 | Daughter | — | Massachusetts |
| 4 | James P. Scanlon | 35 | Brother-in-law | W.P.A. | Massachusetts |
| 5 | Walter F. Lewis | 46 | Head | Salesman | Massachusetts |
| 6 | Anne E. Lewis | 46 | Wife | Filler | New Hampshire |
| 7 | Maurice M. Labella | 40 | Head | Chemist | New York |
| 8 | Ivy A. Labella | 41 | Wife | — | Rhode Island |
| 9 | Frederick A. Ray | 50 | Head | Clerk | Massachusetts |
| 10 | Elizabeth E. Ray | 69 | Sister | — | Massachusetts |
| 11 | Ella Ray | 55 | Sister | — | Massachusetts |
| 12 | Emma J. Fields | 60 | Sister | Housekeeper | Massachusetts |
| 13 | John G. Ray | 69 | Head | Storekeeper | Massachusetts |
| 14 | Ella M. Ray | 71 | Wife | — | Canada |
| 15 | Paul B. Bangs | 45 | Head | Fireman | Massachusetts |
| 16 | Mary A. Bangs | 45 | Wife | — | Scotland |
| 17 | Jeanette D. Bangs | 18 | Daughter | Typist | Massachusetts |
| 18 | Eleanor L. Bangs | 16 | Daughter | — | Massachusetts |
| 19 | Harold R.A. Strom | 51 | Head | Cook | Denmark |
| 20 | Florence Strom | 52 | Wife | — | England |
| 21 | Alfred W. Strom | 19 | Son | New Worker | Massachusetts |
| 22 | Adra M. Strom | 14 | Daughter | — | Massachusetts |
| 23 | Herbert E. Walker | 66 | Head | Sub Contractor | Canada |
| 24 | Harriet P. Walker | 59 | Wife | Waitress | England |
| 25 | Hera Ends Walker | None | Block | — | — |
| 26 | Alfred J. Anderson | 30 | Head | Electrical Engineer | Massachusetts |
| 27 | Ruth S. Anderson | 29 | Wife | Secretary | Massachusetts |
| 28 | Louise Miller | 51 | Mother-in-law | — | Massachusetts |
| 29 | Lester F. Miller | 33 | Brother-in-law | Salesman | Pennsylvania |
| 30 | Minnie D.C. La Montagne | 58 | Housekeeper | Housekeeper | Maine |
| 31 | Margaret Haggerty | 48 | Head | — | Eire |
| 32 | Thomas Haggerty | 16 | Son | — | Massachusetts |
| 33 | Mary M. Haggerty THIS PERSON | 14 | Daughter | — | Massachusetts |
| 34 | Joseph M. Haggerty | 12 | Son | — | Massachusetts |
| 35 | Dorothy A. Haggerty | 10 | Daughter | — | Massachusetts |
| 36 | Catherine R. Haggerty | 8 | Daughter | — | Massachusetts |
| 37 | Theresa A. Haggerty | 6 | Daughter | — | Massachusetts |
| 38 | Here Ends Haggerty | None | Block | — | — |
| 39 | William Burke | 50 | Head | Carpenter | Massachusetts |
| 40 | Catherine J. Burke | 42 | Wife | — | Canada |
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)