MG
Mary Gill — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Gill across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 9-person household.
Age 55
b. ~1885
Female
Head
Born: Poland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | GILL |
| Given Name | MARY |
| Relationship to Head | HEAD |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1885 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Stella Gill | Daughter | — | 14 | ~1926 |
| John Gill | Other | — | 1 | ~1939 |
| Charles Pinkos | Son | — | 30 | ~1910 |
| Mary Gill | Head | — | 55 | ~1885 |
| Wladyslawa Gill | Daughter | — | 18 | ~1922 |
| Theodor Gill | Son | — | 16 | ~1924 |
| Chester Gill | Son | — | 13 | ~1927 |
| Stephany Gill | Daughter | — | 17 | ~1923 |
| Rose Pinkos | Daughter | — | 28 | ~1912 |
Census Appearances
1930
Cook, Illinois
Head, age 44
Cook, Illinois · implied b. ~1886 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gill |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Alien |
| Year of Immigration | 1906 |
| Age at First Marriage | 19 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | R |
| Home Value / Rent | 10.00 |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Head, age 55
Cook-County, Illinois · implied b. ~1885 — 9 household members
| Surname | GILL |
| Given Name | MARY |
| Relationship to Head | HEAD |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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 Gill across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Gill
Head · 1940 · age 55 · b. ~1885 · Illinois
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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-t0627-00946-00718)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Warchol | 52 | HEAD | Laborer | Poland |
| 2 | Mary Warchol | 48 | WIFE | — | Poland |
| 3 | Joseph Warchol | 24 | SON | Laborer | Illinois |
| 4 | Florence Warchol | 21 | Daughter | Packing Sausage | Illinois |
| 5 | Louis Warchol | 18 | Son | Laborer | Illinois |
| 6 | Jenny Warchol | 16 | Daughter | — | Illinois |
| 7 | Raymond Warchol | 11 | Son | — | Illinois |
| 8 | Evelyn Warchol | 9 | Daughter | — | Illinois |
| 9 | Lambert Warchol | 7 | Son | — | Illinois |
| 10 | Dolores Warchol | 5 | Daughter | — | Illinois |
| 11 | Estere Warchol | 2 | Daughter | — | Illinois |
| 12 | Stanley Tomczak | 31 | HEAD | Driver | Wisconsin |
| 13 | Louis Vellos | 33 | HEAD | Driver | GREECE |
| 14 | Rose Vellos | 29 | WIFE | Linking | Poland |
| 15 | Beatrice Vellos | 8 | Daughter | — | Illinois |
| 16 | Mary Vellos | 7 | Daughter | — | Illinois |
| 17 | Mary Gill THIS PERSON | 55 | HEAD | — | Poland |
| 18 | Wladyslawa Gill | 18 | Daughter | Helper | Illinois |
| 19 | Stephany Gill | 17 | Daughter | Gardening Farm | Illinois |
| 20 | Theodor Gill | 16 | SON | — | Illinois |
| 21 | Stella Gill | 14 | Daughter | — | Illinois |
| 22 | Chester Gill | 13 | Son | — | Illinois |
| 23 | John Gill | 1 | Grandson | — | Illinois |
| 24 | Charles Pinkos | 30 | SON | Seamer | Illinois |
| 25 | Rose Pinkos | 28 | Daughter | Scaler | Illinois |
| 26 | Bruno Rakowski | 32 | HEAD | Laborer | Illinois |
| 27 | Rose Rakowski | 28 | WIFE | Office Cleaning | Illinois |
| 28 | Bruno Jr Rakowski | 8 | SON | — | Illinois |
| 29 | Alice Rakowski | 6 | Daughter | — | Illinois |
| 30 | Arnold Rakowski | 4 | SON | — | Illinois |
| 31 | Walter Shaputis | 22 | HEAD | Laborer | Illinois |
| 32 | Anna Shaputis | 19 | WIFE | — | Illinois |
| 33 | Marsha Shaputis | 1 | Daughter | — | Illinois |
| 34 | Mary Anna Shaputis | 0 | Daughter | — | Illinois |
| 35 | Adam Chlopecki | 26 | HEAD | Laborer | Illinois |
| 36 | Irena Chlopecki | 26 | WIFE | — | Illinois |
| 37 | Adam Chlopecki | 0 | SON | — | Illinois |
| 38 | Katarzyna Wchwieruk | 65 | HEAD | — | Poland |
| 39 | Michael Nowobilski | 44 | SON IN LAW | Laborer | Poland |
| 40 | Mary Nowobilski | 34 | Daughter | — | 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)