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Mary Fox — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Fox across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents William & Mary — first a spouse (b.~1895), then head of a 4-person household.
Age 35
b. ~1895
Female
Spouse
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Fox |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1895 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Frank Fox | Head | — | 37 | ~1893 |
| George Zechich | Other | — | 29 | ~1901 |
| Ervin Fox | Son | — | 13 | ~1917 |
| Mary Fox | Spouse | — | 35 | ~1895 |
Census Appearances
1920
Cook, Illinois
Daughter, age 26
Cook, Illinois · implied b. ~1894 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Stenographer |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Spouse, age 35
Cook, Illinois · implied b. ~1895 — 4 household members
| Surname | Fox |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 43
Cook-County, Illinois · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | Marie |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Fox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Dunn (~0.92 confidence) and mother Mary Dunn (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Dunn
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Mary Dunn
b. ~1864
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Fox
Spouse · 1930 · age 35 · b. ~1895 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel452:0471)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joe Belej | 38 | Head | Laborer | Czechoslovakia |
| 2 | Marie Belej | 41 | Wife | — | Czechoslovakia |
| 3 | Anna Kozlowski | 56 | Head | — | Poland |
| 4 | Frank Kozlowski | 36 | Son | Laborer | Illinois |
| 5 | Steve Kozlowski | 22 | Son | Truck Driver | Illinois |
| 6 | Joe Kozlowski | 19 | Son | Truck Driver | Illinois |
| 7 | Bernice Kozlowski | 25 | Daughter | Sewing | Illinois |
| 8 | Bennet Kozlowski | 29 | Daughter | Sewing | Illinois |
| 9 | Annie Kozlowski | 10 | W. Daughter | — | Illinois |
| 10 | Anton Komerny | 43 | Head | Laborer | Czechoslovakia |
| 11 | Mary Komerny | 47 | Wife | — | Czechoslovakia |
| 12 | Anton Jr. Komerny | 20 | Son | — | Czechoslovakia |
| 13 | Frank Komerny | 9 | Son | — | Czechoslovakia |
| 14 | Joe Komerny | 7 | Son | — | Illinois |
| 15 | Eddie Komerny | 2 | Son | — | Illinois |
| 16 | Frank Fox | 37 | Head | Laborer | Illinois |
| 17 | Mary Fox THIS PERSON | 35 | Wife | — | Illinois |
| 18 | Ervin Fox | 13 | Son | — | Illinois |
| 19 | George Zechich | 29 | Brother | Laborer | Illinois |
| 20 | Dominick Nesnidal | 48 | Head | Proprietor | Czechoslovakia |
| 21 | Mary Nesnidal | 41 | Wife | — | Czechoslovakia |
| 22 | Charles Nesnidal | 18 | Son | — | Illinois |
| 23 | William Nesnidal | 15 | Son | — | Illinois |
| 24 | Helen Nesnidal | 10 | Daughter | — | Illinois |
| 25 | John Gleasner | 23 | Head | Laborer | Illinois |
| 26 | Violet Gleasner | 23 | Wife | — | Illinois |
| 27 | Shirley Gleasner | 0 | Daughter | — | Illinois |
| 28 | Frank Fuchs | 36 | Head | Tailor | Illinois |
| 29 | Mae Fuchs | 33 | Wife | — | Illinois |
| 30 | Evan Fuchs | 13 | Son | — | Illinois |
| 31 | Stanley Zatk | 44 | Head | Proprietor | Czechoslovakia |
| 32 | Rose Zatk | 40 | Wife | — | Illinois |
| 33 | Helma Zatk | 16 | Daughter | — | Illinois |
| 34 | Mildred Zatk | 15 | Daughter | — | Illinois |
| 35 | Ernest Zatk | 12 | Son | — | Illinois |
| 36 | Anna Smolney | 49 | Head | Laborer | Illinois |
| 37 | Fred Smolney | 12 | Son | — | Illinois |
| 38 | Charles Rich | 31 | Head | Laborer | Yugoslavia |
| 39 | Mary Rich | 29 | Wife | — | Yugoslavia |
| 40 | Tehorda J. Rich | 0 | Son | — | Illinois |
| 41 | Joseph Hacek | 48 | Head | Janitor | Illinois |
| 42 | Bessie Hacek | 46 | Wife | — | Illinois |
| 43 | George Hacek | 24 | Son | Janitor | Illinois |
| 44 | Willie Hacek | 19 | Son | — | Illinois |
| 45 | Edward Hacek | 16 | Son | — | Illinois |
| 46 | Erving Hacek | 14 | Son | — | Illinois |
| 47 | Richard Hacek | 12 | Son | — | Illinois |
| 48 | Helen Hacek | 10 | Daughter | — | Illinois |
| 49 | Joe Duffek | 62 | Head | Laborer | Czechoslovakia |
| 50 | Mary Duffek | 59 | Wife | — | Czechoslovakia |
Pedigree Summary
Mary
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)