MD
Mary Dwyer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Dwyer across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Dwyer |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Industry | 0 |
| Class of Worker | No |
| Highest Grade | H-3 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1923 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jean Dwyer | Daughter | — | 15 | ~1925 |
| Robert Dwyer | Son | — | 4 | ~1936 |
| Timothy Dwyer | Head | — | 48 | ~1892 |
| Mary Dwyer | Daughter | — | 17 | ~1923 |
| Mary Dwyer | Spouse | — | 46 | ~1894 |
| Paul Dwyer | Son | — | 8 | ~1932 |
| Margaret Dwyer | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 6
Suffolk, Massachusetts · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | Margaret G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Canada English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 17
Suffolk-County, Massachusetts · implied b. ~1923 — 7 household members
| Surname | Dwyer |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Industry | 0 |
| Class of Worker | No |
| Highest Grade | H-3 |
| 1935 Residence | Same House |
| 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 Dwyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dwyer
Daughter · 1940 · age 17 · b. ~1923 · Massachusetts
★ You are viewing this record
Sibling
Paul Dwyer
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Dwyer
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Dwyer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Dwyer
Sibling · 1940 · age 4
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-t0627-01682-00465)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Wood | 32 | Wife | — | Massachusetts |
| 42 | Beverly Wood | 14 | Daughter | — | Massachusetts |
| 43 | Eleanor Wood | 11 | Daughter | — | Massachusetts |
| 44 | David Wood | 7 | Son | — | Massachusetts |
| 45 | Allan Wood | 5 | Son | — | Massachusetts |
| 46 | Clarence Trullson | 47 | Head | Asst. Credit Mgr. | Massachusetts |
| 47 | Teresa Q. Trullson | 42 | Wife | — | Massachusetts |
| 48 | Clarence Trullson | 17 | Son | — | Massachusetts |
| 49 | Ruth Trullson | 11 | Daughter | — | Massachusetts |
| 50 | Michael Quinn | 32 | Head | Asst. Dist. Supervisor | Massachusetts |
| 51 | Mary E. Quinn | 29 | Wife | — | Massachusetts |
| 52 | Margaret Quinn | 3 | Daughter | — | Massachusetts |
| 53 | Sarah V. Quinn | 0 | Daughter | — | Massachusetts |
| 54 | Charles H. Newton | 30 | Head | Parts Mgr. | Massachusetts |
| 55 | Lillian R. Newton | 26 | Wife | — | Massachusetts |
| 56 | Charles Newton | 2 | Son | — | Massachusetts |
| 57 | Judith V. Newton | 0 | Daughter | — | Massachusetts |
| 58 | Clarence Knight | 42 | Head | Fireman | Massachusetts |
| 59 | Winifred D. Knight | 41 | Wife | — | Massachusetts |
| 60 | Winifred Knight | 7 | Daughter | — | Massachusetts |
| 61 | Clarence Knight | 4 | Son | — | Massachusetts |
| 62 | Timothy J. Dwyer | 48 | Head | Health Inspector | Massachusetts |
| 63 | Mary E. Dwyer | 46 | Wife | — | Massachusetts |
| 64 | Margaret L. Dwyer | 19 | Daughter | Salesgirl | Massachusetts |
| 65 | Mary L. Dwyer THIS PERSON | 17 | Daughter | — | Massachusetts |
| 66 | Jean M. Dwyer | 15 | Daughter | — | Massachusetts |
| 67 | Paul J. Dwyer | 8 | Son | — | Massachusetts |
| 68 | Robert Dwyer | 4 | Son | — | Massachusetts |
| 69 | Nellie G. Sullivan | 70 | Head | — | Irish Free State |
| 70 | Joseph J. Sullivan | 39 | Son | Iron Worker | Massachusetts |
| 71 | Loretta Maloney | 41 | Daughter | Clerk | Massachusetts |
| 72 | Barbara Maloney | 11 | Granddaughter | — | Massachusetts |
| 73 | Lorraine Maloney | 10 | Granddaughter | — | Massachusetts |
| 74 | Francis Moreau | 60 | Head | Butler | France |
| 75 | Hermance R. Moreau | 57 | Wife | — | France |
| 76 | Louise Moreau | 20 | Daughter | Clerk | Massachusetts |
| 77 | Francis F. Mccann | 33 | Head | Collector | Massachusetts |
| 78 | Agnes J. Mccann | 33 | Wife | — | Canada English |
| 79 | Thomas J. Martens | 75 | Head | — | Canada French |
| 80 | Mildred Martens | 41 | Daughter | Stenographer | Canada French |
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)