MP
Mary Potter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Potter across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1911), then head of a 9-person household.
Age 29
b. ~1911
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Potter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1911 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Irene Mcgonagle | Daughter | — | 39 | ~1901 |
| Theresa Potter | Daughter | — | 16 | ~1924 |
| Mary Potter | Daughter | — | 29 | ~1911 |
| Albina Potter | Daughter | — | 34 | ~1906 |
| Edward Potter | Head | — | 58 | ~1882 |
| Robert Lennart | Other | — | 16 | ~1924 |
| William Potter | Son | — | 25 | ~1915 |
| John Potter | Son | — | 24 | ~1916 |
| Cecelia Potter | Spouse | — | 61 | ~1879 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 18
Suffolk, Massachusetts · implied b. ~1912 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Potter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | Canada English |
| Occupation | Clerk |
| Industry | Wool Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 29
Suffolk-County, Massachusetts · implied b. ~1911 — 9 household members
| Surname | Potter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | Hs 4 |
| 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 Potter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Potter
Daughter · 1940 · age 29 · b. ~1911 · Massachusetts
★ You are viewing this record
Sibling
Albina Potter
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Mcgonagle
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Potter
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Potter
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Potter
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
26 people indexed on this census page (nara:1940:m-t0627-01659-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Clarke | 68 | Head | — | Eire |
| 2 | Robert Clarke | 30 | Son | Meter Reader | Massachusetts |
| 3 | Margaret Mahoney | 67 | Sister | — | Eire |
| 4 | Donald Cochrane | 17 | Lodger | — | Massachusetts |
| 5 | Francis Graham | 14 | Lodger | — | Massachusetts |
| 6 | Joseph Sheehan | 50 | Head | Meter Supervisor | Massachusetts |
| 7 | Elizabeth Sheehan | 40 | Wife | — | Massachusetts |
| 8 | Edna F Sheehan | 19 | Daughter | — | Massachusetts |
| 9 | Elizabeth Sheehan | 14 | Daughter | — | Massachusetts |
| 10 | Donald Sheehan | 12 | Son | — | Massachusetts |
| 11 | Jean Sheehan | 9 | Daughter | — | Massachusetts |
| 12 | Edward J Potter | 58 | Head | Contractor | England |
| 13 | Cecelia M Potter | 61 | Wife | — | Canada English |
| 14 | Irene Mcgonagle | 39 | Daughter | Housework | Canada English |
| 15 | Albina Potter | 34 | Daughter | Luncheon Attendant | Canada English |
| 16 | Mary Potter THIS PERSON | 29 | Daughter | — | Massachusetts |
| 17 | William Potter | 25 | Son | Laborer | Massachusetts |
| 18 | John Potter | 24 | Son | — | Massachusetts |
| 19 | Theresa Potter | 16 | Daughter | — | Massachusetts |
| 20 | Robert Lennart | 16 | Nephew | — | Massachusetts |
| 21 | Katherine Gould Hart | 60 | Head | Sales Girl | Canada English |
| 22 | John F Mcauliffe | 37 | Head | Attorney | Massachusetts |
| 23 | Hazel Mcauliffe | 30 | Wife | — | Maine |
| 24 | John F Jr Mcauliffe | 1 | Son | — | Massachusetts |
| 25 | John J Finn | 33 | Head | Lawyer | Massachusetts |
| 26 | Anna L Finn | 32 | Wife | — | Massachusetts |
Related Census Records
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)