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Mary Gibbons — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Gibbons across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Tom & Elsie — first a spouse (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Gibbons |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | 0 |
| Industry | 0 |
| Class of Worker | NO |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | 0 |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Gibbons | Son | — | 14 | ~1926 |
| Mary Gibbons | Spouse | — | 31 | ~1909 |
| Richard Gibbons | Son | — | 13 | ~1927 |
| Ronald Gibbons | Son | — | 3 | ~1937 |
| Robert Gibbons | Head | — | 36 | ~1904 |
Census Appearances
1920
Cook, Illinois
Daughter, age 10
Cook, Illinois · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gibbons |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 20
Cook, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gibbons |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Machine hand |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 31
Cook-County, Illinois · implied b. ~1909 — 5 household members
| Surname | Gibbons |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | 0 |
| Industry | 0 |
| Class of Worker | NO |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Gibbons across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Tom Gibbons (~0.92 confidence) and mother Elsie Gibbons (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Tom Gibbons
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Elsie Gibbons
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Gibbons
Spouse · 1940 · age 31 · b. ~1909 · 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-t0627-00971-00069)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Maloney | 35 | Head | 0 | Illinois |
| 2 | William Maloney | 8 | Son | — | Illinois |
| 3 | Ilene Maloney | 5 | Daughter | — | Illinois |
| 4 | Raymond Maloney | 3 | Son | — | Illinois |
| 5 | Edward Maloney | 0 | Son | — | Illinois |
| 6 | Edward Worth | 55 | Roomer | 0 | Illinois |
| 7 | William Koehler | 44 | Head | 0 | Wisconsin |
| 8 | Martha Koehler | 36 | Wife | 0 | Wisconsin |
| 9 | William Koehler | 14 | Son | — | Illinois |
| 10 | Frederick Koehler | 10 | Son | — | Illinois |
| 11 | Wilhelmina Koehler | 9 | Daughter | — | Illinois |
| 12 | Gorman Jr Johnson | 39 | Head | Manager | Illinois |
| 13 | Josephine Johnson | 31 | Wife | Typist | Illinois |
| 14 | Norman Johnson | 9 | Son | — | Illinois |
| 15 | Lois Johnson | 7 | Daughter | — | Illinois |
| 16 | Craig Johnson | 6 | Son | — | Illinois |
| 17 | Father Millis | 77 | Father | 0 | Sweden |
| 18 | Elizabeth Overpeck | 36 | Maid | Maid | Ohio |
| 19 | Eugene Hay | 70 | Head | 0 | Wisconsin |
| 20 | Leonore Hay | 62 | Wife | 0 | Ohio |
| 21 | Robert Gibbons | 36 | Head | Roofer | Texas |
| 22 | Mary Gibbons THIS PERSON | 31 | Wife | 0 | Illinois |
| 23 | Robert Gibbons | 14 | Son | — | Illinois |
| 24 | Richard Gibbons | 13 | Son | — | Illinois |
| 25 | Ronald Gibbons | 3 | Son | — | Illinois |
| 26 | Anthony Lemes | 33 | Head | Ice Man | Spain |
| 27 | Julia Lemes | 33 | Wife | Reviewer | Illinois |
| 28 | Marie Lemes | 14 | Daughter | — | Ohio |
| 29 | Anthony Lemes | 11 | Son | — | Ohio |
| 30 | John Lemes | 7 | Son | — | Illinois |
| 31 | William Naduh | 47 | Head | 0 | Poland |
| 32 | Mary Naduh | 46 | Wife | 0 | Hungary |
| 33 | Helen Naduh | 15 | Daughter | 0 | Illinois |
| 34 | Sam Pecher | 59 | Head | 0 | Illinois |
| 35 | Sam Izzo | 24 | Head | Cement Finisher | Illinois |
| 36 | Anna Izzo | 21 | Wife | 0 | Illinois |
| 37 | Phillis Izzo | 2 | Daughter | — | Illinois |
| 38 | Michael Schook | 42 | Head | Welder | Pennsylvania |
| 39 | Marion Schook | 24 | Wife | 0 | Texas |
| 40 | Jerry Schook | 0 | Son | — | Missouri |
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 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)