MF
Mary Frost — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Frost across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Frost |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1888 |
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 |
|---|---|---|---|---|
| Clarence Frost | Son | — | 25 | ~1915 |
| William Campbell | Other | — | 44 | ~1896 |
| Marion Frost | Daughter | — | 17 | ~1923 |
| Eleanor Frost | Daughter | — | 19 | ~1921 |
| Daniel Frost | Son | — | 29 | ~1911 |
| Clarence Frost | Head | — | 58 | ~1882 |
| Donald Frost | Son | — | 13 | ~1927 |
| Mary Frost | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Suffolk, Massachusetts
Spouse, age 42
Suffolk, Massachusetts · implied b. ~1888 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frost |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 17 |
| Father's Birthplace | Maine |
| Mother's Birthplace | New Hampshire |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Spouse, age 52
Suffolk-County, Massachusetts · implied b. ~1888 — 8 household members
| Surname | Frost |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Frost across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Frost
Spouse · 1940 · age 52 · b. ~1888 · 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
40 people indexed on this census page (nara:1940:m-t0627-01682-00456)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James E. Riley | 38 | son | Roofer | Massachusetts |
| 2 | Frederick L. Riley | 29 | son | Salesman | Massachusetts |
| 3 | Catherine A. Riley | 27 | daughter | Clerk | Massachusetts |
| 4 | James J. Sullivan | 60 | Head | Operator | Irish Free State |
| 5 | Nora D. Sullivan | 55 | wife | — | Irish Free State |
| 6 | John Sullivan | 26 | son | Fireman | Massachusetts |
| 7 | William Sullivan | 23 | son | — | Massachusetts |
| 8 | Richard Sullivan | 16 | son | — | Massachusetts |
| 9 | Paul Front | 31 | Head | Shipping Clerk | Massachusetts |
| 10 | Josephine V. Front | 29 | wife | — | Massachusetts |
| 11 | Joan E. Front | 5 | daughter | — | Massachusetts |
| 12 | Eleanor L. Front | 5 | daughter | — | Massachusetts |
| 13 | Patricia A. Front | 1 | daughter | — | Massachusetts |
| 14 | Ray Williams | 57 | Head | Machinist | Indiana |
| 15 | Mary E. Williams | 56 | wife | — | England |
| 16 | Frank Kennedy | 70 | Head | Repairman | California |
| 17 | Catherine A. Kennedy | 66 | wife | — | Massachusetts |
| 18 | Ruth F. Kennedy | 31 | daughter | Teacher | Massachusetts |
| 19 | William E. Kane | 50 | Head | Steamfitter | Massachusetts |
| 20 | Alice V. Kane | 46 | wife | — | Massachusetts |
| 21 | Dorothy A. Kane | 18 | daughter | — | Massachusetts |
| 22 | Barbara M. Kane | 15 | daughter | — | Massachusetts |
| 23 | Michael Cusick | 66 | Head | — | Irish Free State |
| 24 | Bridget A. Cusick | 58 | wife | — | Irish Free State |
| 25 | Frederick M. Cusick | 21 | son | Copy Boy | Massachusetts |
| 26 | John J. Cusick | 31 | son | Salesman | Massachusetts |
| 27 | Mary Eleanor Cusick | 28 | daughter-in-law | — | Texas |
| 28 | Lennie J. Cusick | 8 | granddaughter | — | New York |
| 29 | Clarence W. Frost | 58 | Head | — | Massachusetts |
| 30 | Mary A. Frost THIS PERSON | 52 | wife | — | Massachusetts |
| 31 | Daniel E. Frost | 29 | son | Shipper | Massachusetts |
| 32 | Clarence Frost | 25 | son | Paint Maker | Massachusetts |
| 33 | Eleanor Frost | 19 | daughter | — | New Hampshire |
| 34 | Marion Frost | 17 | daughter | — | New Hampshire |
| 35 | Donald Frost | 13 | son | — | Massachusetts |
| 36 | William Campbell | 44 | Brother-in-law | Laborer | Massachusetts |
| 37 | Wallace R. Johnston | 54 | Head | Carpenter | Massachusetts |
| 38 | Vanessa D. Johnston | 53 | wife | — | New York |
| 39 | Barbara E. Johnston | 21 | daughter | Clerk | Massachusetts |
| 40 | Ralph W. Phinney | 48 | Head | Carpenter | Canada English |
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)