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John Mooney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Mooney across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Laura & Charles — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mooney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Clerical |
| Industry | Corn Products Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1610 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerical |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1919 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Loretta Thomas | Daughter | — | 23 | ~1917 |
| Charles Mooney | Head | — | 46 | ~1894 |
| Ellen Carson | Other | — | 68 | ~1872 |
| John Mooney | Son | — | 21 | ~1919 |
| Robert Thomas | Son | — | 2 | ~1938 |
| Edward Thomas | Other | — | 24 | ~1916 |
| Laura Mooney | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mooney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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
Son, age 11
Cook, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mooney |
| Given Name | John E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 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
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 7 household members
| Surname | Mooney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Clerical |
| Industry | Corn Products Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1610 |
| 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 John Mooney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Laura Mooney (~0.92 confidence) and father Charles Mooney (~0.92 confidence) and father Charles Mooney (~0.92 confidence) and mother Laura Mooney (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Laura Mooney
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
Charles Mooney
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Charles Mooney
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Laura Mooney
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mooney
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Robert Thomas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Thomas
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-00947-01057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles A. Kucinski | 40 | Lodger | Sales Clerk | Illinois |
| 2 | Josephine Chapic | 30 | Head | Candy Inspector | Illinois |
| 3 | Aldona Chapic | 17 | Sister | — | Illinois |
| 4 | Margaret Johnston | 38 | Lodger | Industrial Nursing | Illinois |
| 5 | Edward Klein | 53 | Head | Truck Driver | Indiana |
| 6 | Augusta Klein | 41 | Wife | — | Indiana |
| 7 | Charles Duke | 28 | Brother-in-law | Clerical | Illinois |
| 8 | Dorothy Duke | 27 | Daughter | Clerical | Illinois |
| 9 | Charles Milkevich | 60 | Head | — | Lithuania |
| 10 | Mary Milkevich | 60 | Wife | — | Lithuania |
| 11 | Frank Milkevich | 30 | Son | Cleaner | Illinois |
| 12 | Joseph Milkevich | 22 | Son | Laborer | Illinois |
| 13 | Evelyn Milkevich | 24 | Daughter-in-law | Laborer | Illinois |
| 14 | Joseph Jr. Milkevich | 6 | Grandson | — | Illinois |
| 15 | George Ellis | 69 | Head | Painter & Decorator | Illinois |
| 16 | Mary Ellis | 57 | Wife | — | Germany |
| 17 | Violet Smith | 38 | Daughter | Run Autographic Mach. | Illinois |
| 18 | Robert Duke | 42 | Head | City Fireman | Illinois |
| 19 | Lillian Duke | 34 | Wife | — | Illinois |
| 20 | Julia Duke | 3 | Daughter | — | Illinois |
| 21 | Charles Mooney | 46 | Head | Clerical | Illinois |
| 22 | Laura Mooney | 46 | Wife | — | Illinois |
| 23 | John Mooney THIS PERSON | 21 | Son | Clerical | Illinois |
| 24 | Edward Thomas | 24 | Son-in-law | Laborer | Illinois |
| 25 | Loretta Thomas | 23 | Daughter | — | Illinois |
| 26 | Robert Thomas | 2 | Son | — | Illinois |
| 27 | Ellen Carson | 68 | Mother-in-law | — | Massachusetts |
| 28 | Anna Schoen | 49 | Head | Housework | Austria |
| 29 | Alice Schoen | 20 | Daughter | New Worker | Illinois |
| 30 | Agnello Gaetano | 62 | Lodger | Laborer | Italy |
| 31 | Louis Mucha | 21 | Lodger | Laborer | Illinois |
| 32 | Charles Schoen | 27 | Head | Laborer | Illinois |
| 33 | Genevieve Schoen | 24 | Wife | — | Illinois |
| 34 | Barbara Schoen | 3 | Daughter | — | Illinois |
| 35 | Marie Schoen | 0 | Daughter | — | Illinois |
| 36 | Elizabeth Mccullough | 54 | Head | — | Northern Ireland |
| 37 | Wesley Armstrong | 29 | Nephew | Clerical | Illinois |
| 38 | Malicha Burns | 46 | Head | Police Officer | Illinois |
| 39 | Irene Burns | 40 | Wife | — | Illinois |
| 40 | Melvin Burns | 11 | Son | — | Illinois |
Pedigree Summary
John + 2 siblings
Gen 1 · 4 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)