MD
Mary Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Donnelly across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 3-person household.
Age 70
b. ~1870
Female
Head
Born: Maine
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Donnelly |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Maine |
| 1935 Residence (City) | East Pepperell |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | East Pepperell |
| Est. Birth Year | ~1870 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marguerite Donnelly | Daughter | — | 46 | ~1894 |
| Mary Donnelly | Head | — | 70 | ~1870 |
| Eugene Donnelly | Son | — | 40 | ~1900 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 50
Middlesex, Massachusetts · implied b. ~1870 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Middlesex, Massachusetts
Head, age 60
Middlesex, Massachusetts · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Maine |
| Age at First Marriage | 22 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Canada-Eng |
| Can Read/Write | Yes |
| Home Owned/Rented | 7500 |
| Home Value / Rent | R |
| Veteran | O |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Middlesex-County, Massachusetts
Head, age 70
Middlesex-County, Massachusetts · implied b. ~1870 — 3 household members
| Surname | Donnelly |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Maine |
| 1935 Residence (City) | East Pepperell |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Donnelly
Head · 1940 · age 70 · b. ~1870 · 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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01616-00650)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Breen | 25 | Wife | Stenographer | Massachusetts |
| 42 | Jacqueline Breen | 0 | Daughter | — | Massachusetts |
| 43 | Waldo Parker | 48 | Head | Cutter | Massachusetts |
| 44 | John Miner | 72 | Lodger | Carpenter | Massachusetts |
| 45 | Edward E. Ham | 49 | Head | Stationary Engineer | Massachusetts |
| 46 | Alice M. Ham | 51 | Wife | — | Canada-English |
| 47 | Everett A. Ham | 22 | Son | — | Massachusetts |
| 48 | Warren Ham | 13 | Son | — | New Hampshire |
| 49 | Idelia F. Ham | 85 | Aunt | — | Maine |
| 50 | Isabel G. Prescott | 70 | Lodger | — | New York |
| 51 | Albert F. Powers | 51 | Head | Superintendent | Maine |
| 52 | Mary E. Powers | 51 | Wife | — | Maine |
| 53 | Patricia A. Powers | 19 | Daughter | — | Maine |
| 54 | Kenneth F. Happy | 29 | Head | Teacher | New York |
| 55 | Eleanor R. Happy | 29 | Wife | — | Massachusetts |
| 56 | Richard T. Happy | 1 | Son | — | Massachusetts |
| 57 | Walter E. Sherwood | 44 | Head | Mechanical Repairing | Massachusetts |
| 58 | Florence E. Sherwood | 43 | Wife | — | Massachusetts |
| 59 | Robert W. Sherwood | 23 | Son | Mechanic | Massachusetts |
| 60 | Barbara Sherwood | 18 | Daughter | Mechanic | Massachusetts |
| 61 | Frances Sherwood | 17 | Daughter | — | Massachusetts |
| 62 | Fay Sherwood | 14 | Daughter | — | Massachusetts |
| 63 | Nancy Sherwood | 9 | Daughter | — | Massachusetts |
| 64 | Carolyn Sherwood | 7 | Daughter | — | Massachusetts |
| 65 | Leilani Sherwood | 0 | Daughter | — | Massachusetts |
| 66 | Raymond B. Carter | 59 | Head | Dentist | Massachusetts |
| 67 | Natalie M. Carter | 57 | Wife | — | Massachusetts |
| 68 | Bryton Carter | 30 | Son | Agent | Massachusetts |
| 69 | Dana N. Carter | 19 | Son | New Worker | Massachusetts |
| 70 | Charlotte L. Carter | 14 | Daughter | — | Massachusetts |
| 71 | Charles P. Parker | 42 | Head | Chief Of Party | Massachusetts |
| 72 | Helen E. Parker | 46 | Wife | — | Massachusetts |
| 73 | Mabel N. Parker | 62 | Mother | — | Massachusetts |
| 74 | Florence E. Ripley | 65 | Head | — | Massachusetts |
| 75 | Alice Shattuck | 76 | Head | — | Massachusetts |
| 76 | Archibald G. Riley | 55 | Head | Insurance | Massachusetts |
| 77 | Florence W. Riley | 53 | Wife | — | Connecticut |
| 78 | Mary E. Donnelly THIS PERSON | 70 | Head | — | Maine |
| 79 | Marguerite M. Donnelly | 46 | Daughter | Telephone Operator | Maine |
| 80 | Eugene R. Donnelly | 40 | Son | Manager | 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)