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Mary Bell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Bell across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1866), then head of a 3-person household.
Age 74
b. ~1866
Female
Spouse
Born: Vermont
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Bell |
| Given Name | Mary P. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Lowell |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
| Township / Ward | Lowell |
| Est. Birth Year | ~1866 |
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 |
|---|---|---|---|---|
| Marilyn Bell | Daughter | — | 53 | ~1887 |
| Freeman Bell | Head | — | 80 | ~1860 |
| Mary Bell | Spouse | — | 74 | ~1866 |
Census Appearances
1910
Middlesex, Massachusetts
Spouse, age 48
Middlesex, Massachusetts · implied b. ~1862 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bill |
| Given Name | Mary F. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Vermont |
| Years Married | 27 |
| Children Born | 3 |
| Children Living | 2 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Pennsylvania |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1920
Middlesex, Massachusetts
Spouse, age 58
Middlesex, Massachusetts · implied b. ~1862 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bill |
| Given Name | Mary F. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Vermont |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1930
Middlesex, Massachusetts
Other, age 69
Middlesex, Massachusetts · implied b. ~1861 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bell |
| Given Name | Mary F. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Vermont |
| Age at First Marriage | 22 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1940
Middlesex-County, Massachusetts
Spouse, age 74
Middlesex-County, Massachusetts · implied b. ~1866 — 3 household members
| Surname | Bell |
| Given Name | Mary P. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Lowell |
| 1935 Residence (County) | Middlesex |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
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 Bell across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Bell
Spouse · 1940 · age 74 · b. ~1866 · 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-t0627-01691-00154)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James J. Crouch | 35 | Son | Buyer | Massachusetts |
| 2 | Stanley Parker | 41 | Head | Buyer | Vermont |
| 3 | Helen Parker | 34 | Wife | — | Massachusetts |
| 4 | Eleanor Parker | 8 | Daughter | — | Massachusetts |
| 5 | Alan Parker | 2 | Son | — | Massachusetts |
| 6 | Freeman W. Bell | 80 | Head | Proprietor | Vermont |
| 7 | Mary P. Bell THIS PERSON | 74 | Wife | — | Vermont |
| 8 | Marilyn M. Bell | 53 | Daughter | — | Massachusetts |
| 9 | Charles Dinsmore | 65 | Head | Proprietor | Massachusetts |
| 10 | Willianna Dinsmore | 65 | Wife | — | Massachusetts |
| 11 | Louise Dinsmore | 28 | Daughter | — | Massachusetts |
| 12 | Lucy E. Thornton | 88 | Mother-in-law | — | England |
| 13 | Herman Bodine | 37 | Head | Proprietor | Massachusetts |
| 14 | Patricia Bodine | 34 | Wife | — | Massachusetts |
| 15 | Charles R. Bodine | 7 | Son | — | Massachusetts |
| 16 | Robert Bodine | 6 | Son | — | Massachusetts |
| 17 | Tessa Bodine | 60 | Mother | — | Russia |
| 18 | Phillip Ab | 20 | Brother | — | New Hampshire |
| 19 | Anita Ouellette | 25 | Maid | Maid | Massachusetts |
| 20 | Daniel Murphy | 42 | Head | Shipping Clerk | Massachusetts |
| 21 | Ruth Murphy | 40 | Sister | Teacher | Massachusetts |
| 22 | Grace Murphy | 38 | Sister | Teacher | Massachusetts |
| 23 | Alice Murphy | 35 | Sister | — | Massachusetts |
| 24 | Samuel Bass | 28 | Head | Office Manager | Vermont |
| 25 | Carol Bass | 23 | Wife | Social Worker | New York |
| 26 | Agnes Cheney | 59 | Maid | Maid | Canada-English |
| 27 | Alice Batchelder | 69 | Head | Teacher | Massachusetts |
| 28 | Irene Batchelder | 61 | Sister | Teacher | Massachusetts |
| 29 | John Hogan | 47 | Head | Lawyer | Massachusetts |
| 30 | Cecelia C. Hogan | 41 | Wife | — | Massachusetts |
| 31 | Irene Hogan | 13 | Daughter | — | Massachusetts |
| 32 | John J. Hogan | 9 | Son | — | Massachusetts |
| 33 | Hugh Fennessy | 49 | Head | Private | Massachusetts |
| 34 | Mae Fennessy | 46 | Wife | — | Massachusetts |
| 35 | Frances Fennessy | 15 | Daughter | — | Massachusetts |
| 36 | Eleanor Peterson | 51 | Daughter | — | Massachusetts |
| 37 | Block Peterson | 13 | Grandson | — | Massachusetts |
| 38 | Edward Mcsweeney | 41 | Head | Chauffeur | Massachusetts |
| 39 | Mary Mcsweeney | 42 | Wife | — | Massachusetts |
| 40 | Edward Mcsweeney | 8 | Son | — | 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)