MF
Mary Frost — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, New York
Our Model Tree links this Mary Frost across the 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Frost |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 624 |
| Highest Grade | No 8-2 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Clerk |
| Township / Ward | Buffalo City |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Frost | Daughter | — | 20 | ~1920 |
| William Frost | Son | — | 7 | ~1933 |
| Lily Frost | Spouse | — | 39 | ~1901 |
| Lillian Frost | Daughter | — | 10 | ~1930 |
| Leonard Frost | Son | — | 8 | ~1932 |
| Leonard Frost | Head | — | 36 | ~1904 |
Census Appearances
1930
Erie, New …
Daughter, age 9
Erie, New York · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frost |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Northern Ireland |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Erie-County, New …
Daughter, age 20
Erie-County, New York · implied b. ~1920 — 6 household members
| Surname | Frost |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 624 |
| Highest Grade | No 8-2 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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.
Show:
This person
Anchor record
Mary Frost
Daughter · 1940 · age 20 · b. ~1920 · New York
★ You are viewing this record
Sibling
Leonard Frost
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Frost
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Frost
Sibling · 1940 · age 10
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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02828-00043)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Zust | 15 | Son | — | New York |
| 42 | Almer Doeing | 37 | Head | Supervisor | New York |
| 43 | Gertrude Doeing | 38 | Wife | — | New York |
| 44 | Lorraine Doeing | 15 | Daughter | — | New York |
| 45 | Earl Doeing | 12 | Son | — | New York |
| 46 | Louise Streicher | 65 | Mother-in-law | — | New York |
| 47 | Charles Wilson | 31 | Head | Credit Manager | Scotland |
| 48 | Ella Wilson | 32 | Wife | — | New York |
| 49 | Patricia Wilson | 6 | Daughter | — | New York |
| 50 | Raymond Berger | 45 | Head | Roofer | New York |
| 51 | Clara Berger | 52 | Sister | Seamstress | New York |
| 52 | Annette Berger | 48 | Sister | — | New York |
| 53 | Richard Hibler | 37 | Head | Truck Driver | Penn |
| 54 | Marion Hibler | 38 | Wife | — | New York |
| 55 | Audry Hibler | 11 | Daughter | — | New York |
| 56 | Richard Hibler | 7 | Son | — | New York |
| 57 | Donald Hibler | 4 | Son | — | New York |
| 58 | Willard Hibler | 1 | Son | — | New York |
| 59 | Anna Birchard | 64 | Head | Cook | Germany |
| 60 | Henry Schaefer | 57 | Brother | Laborer | New York |
| 61 | Leonard Frost | 36 | Head | Machinist | New York |
| 62 | Lily Frost | 39 | Wife | — | New York |
| 63 | Mary Frost THIS PERSON | 20 | Daughter | Clerk | New York |
| 64 | Lillian Frost | 10 | Daughter | — | New York |
| 65 | Leonard Jr. Frost | 8 | Son | — | New York |
| 66 | William Frost | 7 | Son | — | New York |
| 67 | Ralph Bluman | 32 | Head | Carpenter | New York |
| 68 | Amelia Bluman | 28 | Wife | — | New York |
| 69 | Richard Bluman | 12 | Son | — | New York |
| 70 | Caroline Bluman | 11 | Daughter | — | New York |
| 71 | Ralph Bluman | 9 | Son | — | New York |
| 72 | Audry Bluman | 5 | Daughter | — | New York |
| 73 | Dorothy Ast | 21 | Sister-in-law | — | New York |
| 74 | Emily Ast | 15 | Neice | — | New York |
| 75 | Joseph Incavo | 63 | Head | — | Italy |
| 76 | Clara Incavo | 56 | Wife | — | Italy |
| 77 | Mary Incavo | 25 | Daughter | Seamstress | New York |
| 78 | Matilda Incavo | 19 | Daughter | Box Maker | New York |
| 79 | Helen Incavo | 15 | Daughter | — | New York |
| 80 | Ethel Petre | 33 | Head | — | New York |
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)