WM
William Mooney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Mooney across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1905), then head of a 7-person household.
Age 35
b. ~1905
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mooney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Bank-Examiner |
| Industry | State of Illinois |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bank-Examiner |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1905 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Mary Mooney | Daughter | — | 30 | ~1910 |
| James Mooney | Head | — | 67 | ~1873 |
| William Mooney | Son | — | 35 | ~1905 |
| Julia Mooney | Spouse | — | 60 | ~1880 |
| Julia Mooney | Daughter | — | 23 | ~1917 |
| James Mooney | Son | — | 35 | ~1905 |
| Frank Mooney | Son | — | 49 | ~1891 |
Census Appearances
1930
Cook, Illinois
Son, age 24
Cook, Illinois · implied b. ~1906 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mooney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 35
Cook-County, Illinois · implied b. ~1905 — 7 household members
| Surname | Mooney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Bank-Examiner |
| Industry | State of Illinois |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | No 8 |
| 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 William Mooney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mooney
Son · 1940 · age 35 · b. ~1905 · Illinois
★ You are viewing this record
Sibling
Frank Mooney
Sibling · 1940 · age 49
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mooney
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Mooney
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mooney
Sibling · 1940 · age 30
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-t0627-00928-00831)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Muriel M Levin | 32 | Daughter | Teacher | Illinois |
| 2 | Morris L. Bloom | 46 | Head | Owner | Russia |
| 3 | Goldie Bloom | 43 | Wife | — | Illinois |
| 4 | Beverly Bloom | 16 | Daughter | — | Illinois |
| 5 | Marilyn Bloom | 11 | Daughter | — | Illinois |
| 6 | James L. Mooney | 67 | Head | — | Illinois |
| 7 | Julia A. Mooney | 60 | Wife | — | Illinois |
| 8 | Frank Mooney | 49 | Son | Service Manager | Illinois |
| 9 | James Mooney | 35 | Son | Police Officer | Illinois |
| 10 | William Mooney THIS PERSON | 35 | Son | Bank-Examiner | Illinois |
| 11 | Mary Mooney | 30 | Daughter | Receptionist | Illinois |
| 12 | Julia Mooney | 23 | Daughter | Teacher | Illinois |
| 13 | Gertrude L. B. Welch | 62 | Head | — | Canada-English |
| 14 | William R. B. Welch | 20 | Son | — | Illinois |
| 15 | Ann Austin | 37 | Daughter | — | Illinois |
| 16 | William J. Austin | 37 | Son in Law | Salesman | Illinois |
| 17 | Richard F. B. Green | 52 | Head | Money-Clerk | Illinois |
| 18 | Matilda Green | 53 | Wife | — | Scotland |
| 19 | Merely R. Green | 28 | Son | Platform-Man | Illinois |
| 20 | Edward J. Green | 14 | Son | — | Illinois |
| 21 | James Fyfe | 72 | Brother-in-law | — | Scotland |
| 22 | Manuel Medica | 72 | Head | — | Italy |
| 23 | Helen Medica | 34 | Daughter | Office Manager | Italy |
| 24 | Edward B. Medica | 29 | Son | Platform-Man | Italy |
| 25 | Alfred Medica | 16 | Son | — | Illinois |
| 26 | Ida Bergdore | 26 | Maid | Maid | Illinois |
| 27 | Hope B. Pyle | 36 | Head | Operator | Illinois |
| 28 | Adair A. B. Pyle | 14 | Daughter | — | Illinois |
| 29 | Isidore B. Goldman | 53 | Head | Owner | Russia |
| 30 | Lena Goldman | 45 | Wife | — | Russia |
| 31 | Milton Goldman | 25 | Son | Manager | Illinois |
| 32 | Alice Goldman | 22 | Daughter | — | Illinois |
| 33 | Shirley Goldman | 17 | Daughter | — | Illinois |
| 34 | Phyllis Goldman | 15 | Daughter | — | Illinois |
| 35 | Theodore Goldman | 7 | Son | — | Illinois |
| 36 | Solomon Berenbeim | 37 | Head | Broker | Russia |
| 37 | Sarah B. Berenbeim | 35 | Wife | — | Russia |
| 38 | Jerry Berenbeim | 9 | Son | — | Illinois |
| 39 | Tilda Berenbeim | 3 | Daughter | — | Illinois |
| 40 | Anna Wright | 40 | Sister | Dress Maker | Russia |
Related Census Records
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)