MF
Mary French — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary French across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Female
Daughter
Born: Wyoming
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | French |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Wyoming |
| 1935 Residence (City) | Melrose Park Village |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Press Operator |
| Industry | Can Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
| Occupation | Press Operator |
| Township / Ward | Melrose Park Village |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Agnes French | Daughter | — | 13 | ~1927 |
| Mary French | Daughter | — | 24 | ~1916 |
| Elizabeth French | Daughter | — | 11 | ~1929 |
| John French | Head | — | 56 | ~1884 |
| Alphonse French | Son | — | 16 | ~1924 |
| Victor French | Son | — | 19 | ~1921 |
| Ernest French | Son | — | 23 | ~1917 |
| Caroline French | Spouse | — | 54 | ~1886 |
Census Appearances
1930
Cook, Illinois
Daughter, age 14
Cook, Illinois · implied b. ~1916 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Franch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Wyoming |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
1940
Cook-County, Illinois
Daughter, age 24
Cook-County, Illinois · implied b. ~1916 — 8 household members
| Surname | French |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Wyoming |
| 1935 Residence (City) | Melrose Park Village |
| 1935 Residence (County) | Cook |
| Occupation | Press Operator |
| Industry | Can Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
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 French across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary French
Daughter · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Agnes French
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Victor French
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alphonse French
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest French
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth French
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00788-00093)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Doris May Moore | 4 | daughter | — | Illinois |
| 2 | Patricia Moore | 3 | daughter | — | Illinois |
| 3 | John Milton Moore | 2 | son | — | Illinois |
| 4 | Henry B. Vittosso | 26 | Head | Steel Worker | Illinois |
| 5 | Marie Vittosso | 22 | Wife | — | Illinois |
| 6 | Julia Bronge | 44 | Head | Machine Operator | Illinois |
| 7 | John French | 56 | Head | Grave Digger | Italy |
| 8 | Caroline French | 54 | Wife | — | Italy |
| 9 | Mary French THIS PERSON | 24 | daughter | Press Operator | Wyoming |
| 10 | Ernest French | 23 | son | Laborer | Wyoming |
| 11 | Victor French | 19 | son | — | Wyoming |
| 12 | Alphonse French | 16 | son | — | Illinois |
| 13 | Agnes French | 13 | daughter | — | Illinois |
| 14 | Elizabeth French | 11 | daughter | — | Illinois |
| 15 | Salvador Denca | 59 | Head | Inspector | Italy |
| 16 | Carmela Denca | 46 | Wife | Model | Italy |
| 17 | Joseph Denca | 27 | son | Solderer | Illinois |
| 18 | Pat Denca | 25 | son | Solderer | Illinois |
| 19 | Vera Monzo | 23 | daughter | — | Illinois |
| 20 | Ralph Dener | 21 | son | Truck Driver | Illinois |
| 21 | Tony Dener | 18 | son | — | Illinois |
| 22 | Pete Dener | 16 | son | — | Illinois |
| 23 | Sam Dener | 14 | son | — | Illinois |
| 24 | Angelo Dener | 11 | son | — | Illinois |
| 25 | Rosie Dener | 10 | daughter | — | Illinois |
| 26 | Carlo Monzo | 27 | son in law | Line Worker | Illinois |
| 27 | Phillip Militello | 51 | Head | Laborer | Italy |
| 28 | Anna Militello | 44 | Wife | — | Italy |
| 29 | Phillip Jr. Militello | 11 | son | — | Illinois |
| 30 | Giacomo Leone | 64 | Head | Laborer | Italy |
| 31 | Gemma Leone | 61 | Wife | — | Italy |
| 32 | Phyllis Leone | 18 | daughter | New Worker | Illinois |
| 33 | Carmel Leone | 18 | daughter | New Worker | Illinois |
| 34 | Rocco Leone | 26 | Head | Machine Operator | Illinois |
| 35 | Caroline Leone | 25 | Wife | Laborer | Illinois |
| 36 | Carolann Leone | 1 | daughter | — | Illinois |
| 37 | Joseph De Perro | 36 | Head | Plumber | Illinois |
| 38 | Christine De Perro | 31 | Wife | — | Illinois |
| 39 | Jeanine De Perro | 10 | daughter | — | Illinois |
| 40 | Joanne De Perro | 5 | daughter | — | Illinois |
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)