MF
Mary Frank — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Frank across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1903), then head of a 7-person household.
Age 37
b. ~1903
Female
Head
Born: Russia
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Frank |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Widowed |
| Birthplace | Russia |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Alien |
| Additional Details | |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1903 |
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 |
|---|---|---|---|---|
| Delores Frank | Daughter | — | 11 | ~1929 |
| Eleanor Frank | Daughter | — | 13 | ~1927 |
| Clara Frank | Daughter | — | 12 | ~1928 |
| Mary Frank | Head | — | 37 | ~1903 |
| Albert Frank | Son | — | 3 | ~1937 |
| Francis Frank | Son | — | 5 | ~1935 |
| Joseph Frank | Son | — | 17 | ~1923 |
Census Appearances
1930
Cook, Illinois
Other, age 25
Cook, Illinois · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frank |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Alien |
| Year of Immigration | 1919 |
| Age at First Marriage | 19 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read/Write | No |
| Mother Tongue | Russian |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Cook-County, Illinois
Head, age 37
Cook-County, Illinois · implied b. ~1903 — 7 household members
| Surname | Frank |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Widowed |
| Birthplace | Russia |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Alien |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 Frank across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frank
Head · 1940 · age 37 · b. ~1903 · 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
39 people indexed on this census page (nara:1940:m-t0627-00988-00754)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anthony Patrana | 47 | Head | Die Setter | Poland |
| 2 | Angeline Patrana | 32 | Wife | — | Poland |
| 3 | Audry Patrana | 19 | Daughter | Power Mach Operator | Illinois |
| 4 | Robert Patrana | 7 | Son | — | Illinois |
| 5 | Martha Mrozato | 62 | Head | — | Poland |
| 6 | Mike Mrowiec | 60 | Head | — | Poland |
| 7 | Mary Mrowiec | 54 | Wife | — | Poland |
| 8 | Anne Mrowiec | 27 | Daughter | Assembler | Illinois |
| 9 | Mary Mrowiec | 25 | Daughter | Helper | Illinois |
| 10 | Teddy Mrowiec | 21 | Son | Gateman | Illinois |
| 11 | Theodore Mrowiec | 14 | Son | — | Illinois |
| 12 | Joseph Klopack | 52 | Head | Mixer | Poland |
| 13 | Mary Klopack | 50 | Wife | — | Poland |
| 14 | George Klopack | 23 | Son | Assembler | Oklahoma |
| 15 | Josephine Klopack | 19 | Daughter | Packer | Oklahoma |
| 16 | Paul Klopack | 15 | Son | — | Oklahoma |
| 17 | Richard Klopack | 12 | Son | — | Illinois |
| 18 | Mary Frank THIS PERSON | 37 | Head | — | Russia |
| 19 | Joseph Frank | 17 | Son | — | Colorado |
| 20 | Eleanor Frank | 13 | Daughter | — | Minnesota |
| 21 | Clara Frank | 12 | Daughter | — | Illinois |
| 22 | Delores Frank | 11 | Daughter | — | Illinois |
| 23 | Francis Jr. Frank | 5 | Son | — | Illinois |
| 24 | Albert Frank | 3 | Son | — | Illinois |
| 25 | Macey Gutowski | 80 | Head | — | Lithuania |
| 26 | Harriett Gutowski | 23 | Granddaughter | Clerk | Illinois |
| 27 | John Klopacz | 25 | Head | Laborer | Ohio |
| 28 | Anna Klopacz | 26 | Wife | — | Ohio |
| 29 | John Jr. Klopacz | 4 | Son | — | Illinois |
| 30 | Dianne Klopacz | 2 | Daughter | — | Illinois |
| 31 | Michael Bakos | 36 | Head | Foreman Carpenter | Pennsylvania |
| 32 | Gertrude Bakos | 31 | Wife | — | Illinois |
| 33 | Dorothy Knightowski | 16 | Niece | — | Illinois |
| 34 | Tony Marcialek | 65 | Head | — | Poland |
| 35 | Anna Marcialek | 63 | Wife | — | Poland |
| 36 | Leon Wolkowski | 65 | Lodger | — | Poland |
| 37 | Anthony Brzembowski | 37 | Head | Mill Operator | Poland |
| 38 | Pauline Brzembowski | 32 | Wife | — | Illinois |
| 39 | Apelonia Bender | 67 | Mother | — | Poland |
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)