MD
Mary Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Donnelly across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 11-person household.
Age 40
b. ~1900
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Donnelly |
| Given Name | Mary E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 5 |
| Highest Grade | 8 |
| 1935 Residence | same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1900 |
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 |
|---|---|---|---|---|
| Dorothy Donnelly | Daughter | — | 12 | ~1928 |
| Anne Donnelly | Daughter | — | ~1940 | |
| Gertrude Donnelly | Daughter | — | 6 | ~1934 |
| Rita Donnelly | Daughter | — | 9 | ~1931 |
| Patricia Donnelly | Daughter | — | 4 | ~1936 |
| Eleanor Donnelly | Daughter | — | 14 | ~1926 |
| Joseph Donnelly | Head | — | 41 | ~1899 |
| John Donnelly | Son | — | 12 | ~1928 |
| Joseph Donnelly | Son | — | 19 | ~1921 |
| Richard Donnelly | Son | — | 11 | ~1929 |
| Mary Donnelly | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 28
Suffolk, Massachusetts · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 24 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Spouse, age 40
Suffolk-County, Massachusetts · implied b. ~1900 — 11 household members
| Surname | Donnelly |
| Given Name | Mary E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Class of Worker | 0 |
| Hours Worked | 5 |
| Highest Grade | 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 Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Donnelly
Spouse · 1940 · age 40 · b. ~1900 · 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
17 people indexed on this census page (nara:1940:m-t0627-01669-00773)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella Stevens | 22 | daughter | — | Massachusetts |
| 42 | Ruth Stevens | 16 | granddaughter | — | Rhode Island |
| 43 | Peter Quinteglis | 37 | head | Laborer | Italy |
| 44 | Mary D. Quinteglis | 31 | wife | — | Massachusetts |
| 45 | Mary Quinteglis | 7 | daughter | — | Massachusetts |
| 46 | George Quinteglis | 1 | son | — | Massachusetts |
| 47 | Joseph C. Donnelly | 41 | head | Chauffeur | Massachusetts |
| 48 | Mary E. Donnelly THIS PERSON | 40 | wife | — | Massachusetts |
| 49 | Joseph Jr. Donnelly | 19 | son | Laborer | Massachusetts |
| 50 | John Donnelly | 12 | son | — | Massachusetts |
| 51 | Eleanor Donnelly | 14 | daughter | — | Massachusetts |
| 52 | Dorothy Donnelly | 12 | daughter | — | Massachusetts |
| 53 | Richard Donnelly | 11 | son | — | Massachusetts |
| 54 | Rita Donnelly | 9 | daughter | — | Massachusetts |
| 55 | Gertrude Donnelly | 6 | daughter | — | Massachusetts |
| 56 | Patricia Donnelly | 4 | daughter | — | Massachusetts |
| 57 | Anne Donnelly | 0 | daughter | — | 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)