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.~1927), then head of a 8-person household.
Age 13
b. ~1927
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 | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1927 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Potter | Daughter | — | 13 | ~1927 |
| Irene Potter | Daughter | — | 11 | ~1929 |
| Edward Potter | Head | — | 47 | ~1893 |
| James Potter | Son | — | 16 | ~1924 |
| Thomas Potter | Son | — | 8 | ~1932 |
| Harold Potter | Son | — | 5 | ~1935 |
| Edward Potter | Son | — | 15 | ~1925 |
| Mary Potter | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 3
Suffolk, Massachusetts · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Potter |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 13
Suffolk-County, Massachusetts · implied b. ~1927 — 8 household members
| Surname | Potter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 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 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 13 · b. ~1927 · Massachusetts
★ You are viewing this record
Sibling
Edward Potter
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Potter
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Potter
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Potter
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Potter
Sibling · 1940 · age 11
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-t0627-01679-00456)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Potter | 47 | Head | Project Engineer | Massachusetts |
| 42 | Mary Potter | 42 | Wife | — | Massachusetts |
| 43 | James Potter | 16 | Son | — | Massachusetts |
| 44 | Edward Potter | 15 | Son | — | Massachusetts |
| 45 | Mary Potter THIS PERSON | 13 | Daughter | — | Massachusetts |
| 46 | Irene Potter | 11 | Daughter | — | Massachusetts |
| 47 | Thomas Potter | 8 | Son | — | Massachusetts |
| 48 | Harold Potter | 5 | Son | — | Massachusetts |
| 49 | Arthur Costas | 28 | Head | Truck Driver | Massachusetts |
| 50 | Anna Costas | 26 | Wife | — | Massachusetts |
| 51 | Charles Costas | 4 | Son | — | Massachusetts |
| 52 | Arthur Jr. Costas | 2 | Son | — | Massachusetts |
| 53 | Joseph Costas | 68 | Father | — | Greece |
| 54 | Maria Costas | 65 | Mother | — | Greece |
| 55 | Alexander Masel | 38 | Head | — | Massachusetts |
| 56 | Margaret Masel | 37 | Wife | — | New Hampshire |
| 57 | Lawrence Masel | 8 | Son | — | Massachusetts |
| 58 | Charles Masel | 7 | Son | — | Massachusetts |
| 59 | Donald Masel | 2 | Son | — | Massachusetts |
| 60 | Annie Donn | 67 | Head | — | Massachusetts |
| 61 | Mansur Creuteau | 32 | Head | Foreman | Massachusetts |
| 62 | Marie Creuteau | 30 | Wife | — | Massachusetts |
| 63 | Ann Creuteau | 4 | Daughter | — | Massachusetts |
| 64 | John Ryan | 70 | Head | — | Newfoundland |
| 65 | Mary Ryan | 61 | Wife | — | Newfoundland |
| 66 | Frederick Ryan | 33 | Son | Waiter | Newfoundland |
| 67 | Anna Ryan | 28 | Daughter | Clerk-Typing | Newfoundland |
| 68 | John Ryan | 27 | Son | Waiter | Newfoundland |
| 69 | Michael Kelly | 52 | Head | — | Newfoundland |
| 70 | Lillian Kelly | 52 | Wife | — | Nova Scotia |
| 71 | Paul Kelly | 27 | Son | Typemetal Machine Composition | Massachusetts |
| 72 | Michael Jr. Kelly | 23 | Son | Bookbinder Stockroom | Massachusetts |
| 73 | Arthur Kelly | 21 | Son | Worker | Massachusetts |
| 74 | Charles T. Kelly | 19 | Son | — | Massachusetts |
| 75 | Lillian Kelly | 17 | Daughter | Typist | Massachusetts |
| 76 | Bridget King | 74 | Head | — | Ireland |
| 77 | Mary Burke | 75 | Head | — | Ireland |
| 78 | Annie L. Daley | 51 | Head | — | Massachusetts |
| 79 | Agnes L. Daley | 47 | Daughter | Operator | Massachusetts |
| 80 | Catherine L. Daley | 46 | Daughter | Operator | 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)