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Mary Frey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this Mary Frey across the 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Venice City |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Venice City |
| Est. Birth Year | ~1928 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Norma Frey | Daughter | — | 19 | ~1921 |
| Mary Frey | Daughter | — | 12 | ~1928 |
| Jake Frey | Head | — | 53 | ~1887 |
| James Frey | Son | — | 17 | ~1923 |
| Dorothy Frey | Daughter | — | 18 | ~1922 |
| Dorothy Frey | Spouse | — | 43 | ~1897 |
| Thelma Frey | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Madison, Illinois
Daughter, age 1
Madison, Illinois · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frey |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Daughter, age 12
Madison-County, Illinois · implied b. ~1928 — 7 household members
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Venice City |
| 1935 Residence (County) | Madison |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Frey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frey
Daughter · 1940 · age 12 · b. ~1928 · Illinois
★ You are viewing this record
Sibling
Norma Frey
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Frey
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Frey
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Frey
Sibling · 1940 · age 21
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 — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00851-00412)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carl Ponce | 38 | Head | Carpenter | Louisiana |
| 2 | Rose Ponce | 32 | Wife | — | Illinois |
| 3 | Mathilda Ponce | 11 | Daughter | — | Illinois |
| 4 | Annette Ponce | 9 | Daughter | — | Illinois |
| 5 | Pete Ponce | 4 | Son | — | Illinois |
| 6 | Rosemary Ponce | 1 | Daughter | — | Illinois |
| 7 | Mathilda Ponce | 70 | Mother | — | Italy |
| 8 | Sam Ponce | 36 | Head | Painter | Louisiana |
| 9 | Mamie Ponce | 30 | Wife | — | Louisiana |
| 10 | Ray Ponce | 14 | Son | — | Illinois |
| 11 | Lawrence Ponce | 11 | Son | — | Illinois |
| 12 | Lawrence La Rose | 68 | Head | Retired | Missouri |
| 13 | Anne La Rose | 59 | Wife | — | Illinois |
| 14 | Louis Benner | 46 | Head | Switchman | Illinois |
| 15 | Mary Benner | 44 | Wife | — | Illinois |
| 16 | Audry Benner | 19 | Daughter | Server | Illinois |
| 17 | Jake Frey | 53 | Head | Police | Illinois |
| 18 | Dorothy Frey | 43 | Wife | — | Missouri |
| 19 | Thelma Frey | 21 | Daughter | Waitress | Illinois |
| 20 | Norma Frey | 19 | Daughter | Waitress | Illinois |
| 21 | Dorothy Frey | 18 | Daughter | — | Illinois |
| 22 | James Frey | 17 | Son | — | Illinois |
| 23 | Mary Frey THIS PERSON | 12 | Daughter | — | Illinois |
| 24 | John Gaspar Cirio | 38 | Head | Laborer | Louisiana |
| 25 | Anna Cirio | 37 | Wife | Machine Operator | Louisiana |
| 26 | Bernard Cirio | 12 | Son | — | Illinois |
| 27 | Bernard Cirio | 40 | Brother | Laborer | Louisiana |
| 28 | Joseph Suedi | 60 | Head | Huckster | Italy |
| 29 | Lena Suedi | 53 | Wife | — | Italy |
| 30 | Angelo Suedi | 24 | Son | — | Illinois |
| 31 | John Suedi | 18 | Son | — | Illinois |
| 32 | Antonio Temino | 82 | Head | Relief | Italy |
| 33 | Angie Temino | 88 | Wife | Relief | Italy |
| 34 | Dominic Mange | 65 | Head | Labor | Italy |
| 35 | Camille Mange | 55 | Wife | — | Italy |
| 36 | Clifford Mange | 21 | Son | Meat Cutter | Illinois |
| 37 | Bernard Mange | 19 | Son | — | Illinois |
| 38 | Sam Mange | 16 | Son | — | Illinois |
| 39 | Josephine Mange | 25 | Daughter | Operator | Illinois |
| 40 | Rosa Mange | 14 | Daughter | — | Illinois |
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)