MN
Mary Novak — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Novak across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 2-person household.
Age 58
b. ~1882
Female
Head
Born: Hungary
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Hungary |
| 1935 Residence (City) | Chicago city |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1882 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Yarmilla Novak | Daughter | — | 17 | ~1923 |
| Mary Novak | Head | — | 58 | ~1882 |
Census Appearances
1920
Cook, Illinois
Spouse, age 38
Cook, Illinois · implied b. ~1882 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Hungary |
| Year of Immigration | 1911 |
| Naturalization Status | Alien |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | Slovak |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1930
Cook, Illinois
Spouse, age 43
Cook, Illinois · implied b. ~1887 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novack |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Hungary |
| Age at First Marriage | 21 |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read/Write | No |
| Mother Tongue | German |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1940
Cook-County, Illinois
Head, age 58
Cook-County, Illinois · implied b. ~1882 — 2 household members
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Hungary |
| 1935 Residence (City) | Chicago city |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
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 Novak across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Novak
Head · 1940 · age 58 · b. ~1882 · Illinois
★ You are viewing this record
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-t0627-00968-00480)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patricia Dusza | 1 | Daughter | — | Illinois |
| 2 | John Wesolowski | 28 | Head | Office Work | Wisconsin |
| 3 | Anne Wesolowski | 26 | Wife | — | Illinois |
| 4 | Geraldine Wesolowski | 4 | Daughter | — | Illinois |
| 5 | Jerry Petraski | 32 | Head | Grinder | Czechoslovakia |
| 6 | Anna Petraski | 32 | Wife | — | Czechoslovakia |
| 7 | Charles Petraski | 7 | Son | — | Illinois |
| 8 | Anton Jelinek | 36 | Head | Sheet Metal Worker | Czechoslovakia |
| 9 | Georgiana Jelinek | 35 | Wife | — | Czechoslovakia |
| 10 | Irene Jelinek | 9 | Daughter | — | Illinois |
| 11 | Roco Kalibich | 51 | Head | Tavern Keeper | Czechoslovakia |
| 12 | George Kalibich | 29 | Son | Laborer | Illinois |
| 13 | Blanche Kalibich | 29 | Daughter | — | Illinois |
| 14 | George Jr Kalibich | 11 | Grandson | — | Illinois |
| 15 | Robert Kalibich | 7 | Grandson | — | Illinois |
| 16 | John Cermack | 67 | Head | — | Czechoslovakia |
| 17 | Anna Cermack | 64 | Wife | — | Czechoslovakia |
| 18 | Edward Nik | 34 | Son-in-law | Salesman | Illinois |
| 19 | Anna Nik | 33 | Daughter | — | Illinois |
| 20 | Bonnie Ann Nik | 8 | Daughter | — | Illinois |
| 21 | Ervin Cermak | 29 | Head | Tool & Die Maker | Illinois |
| 22 | Blanche Cermak | 25 | Wife | — | Illinois |
| 23 | Carol Ann Cermak | 4 | Daughter | — | Illinois |
| 24 | Matthew Videgar | 31 | Head | Drill Press Operator | Kansas |
| 25 | Anna Videgar | 30 | Wife | Assembler | Illinois |
| 26 | Dolores Videgar | 9 | Daughter | — | Illinois |
| 27 | Janet Videgar | 6 | Daughter | — | Illinois |
| 28 | John Gajewski | 54 | Head | Laborer | Poland |
| 29 | Mary Gajewski | 41 | Wife | Assembler | Poland |
| 30 | Anne Gajewski | 15 | Daughter | — | Illinois |
| 31 | Anton Peska | 36 | Head | Electrician | Oklahoma |
| 32 | Eleanor Peska | 34 | Wife | — | Illinois |
| 33 | George Peska | 3 | Son | — | Illinois |
| 34 | Louis Pec | 46 | Head | Salesman | Czechoslovakia |
| 35 | Carrie Pec | 46 | Wife | — | Czechoslovakia |
| 36 | Martin Straka | 26 | Lodger | Fender Repair | Czechoslovakia |
| 37 | Mary Nevels | 71 | Head | — | Czechoslovakia |
| 38 | Mary Novak THIS PERSON | 58 | Head | — | Hungary |
| 39 | Yarmilla Novak | 17 | Daughter | — | Illinois |
| 40 | George Pakosta | 28 | Head | Woodworker | 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)