JM
James Mooney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Mooney across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 8-person household.
Age 80
b. ~1860
Male
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mooney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1860 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Fitzgerald | Daughter | — | 37 | ~1903 |
| Margaret Casson | Daughter | — | 3 | ~1937 |
| Robert Fitzgerald | Son | — | 15 | ~1925 |
| Thomas Mooney | Son | — | 50 | ~1890 |
| Margaret Casson | Daughter | — | 46 | ~1894 |
| James Mooney | Head | — | 80 | ~1860 |
| Catherine Mooney | Daughter | — | 59 | ~1881 |
| Milton Casson | Son | — | 23 | ~1917 |
Census Appearances
1920
Cook, Illinois
Head, age 58
Cook, Illinois · implied b. ~1862 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mooney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Watchman |
| Industry | Steel Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1887 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 72
Cook, Illinois · implied b. ~1858 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mooney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 18 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Watchman |
| Industry | Steel Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 80
Cook-County, Illinois · implied b. ~1860 — 8 household members
| Surname | Mooney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 James Mooney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Mooney
Head · 1940 · age 80 · b. ~1860 · 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-t0627-00943-00857)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Wolff | 20 | Son | Stenographer | Illinois |
| 2 | Allen Wolff | 32 | Head | Chauffeur | Wisconsin |
| 3 | Lucille Wolff | 36 | Wife | — | Illinois |
| 4 | Simon Biamonte | 14 | Son | — | Illinois |
| 5 | Andrew O'Connor | 36 | Head | Policeman | Illinois |
| 6 | Florence O'Connor | 36 | Wife | — | Illinois |
| 7 | Robert O'Connor | 2 | Son | — | Illinois |
| 8 | Tony Dziurzynski | 50 | Head | Janitor | Poland |
| 9 | Mary Dziurzynski | 56 | Wife | — | Poland |
| 10 | Phyllis Dziurzynski | 22 | Daughter | Packer | Illinois |
| 11 | Fred Dziurzynski | 15 | Son | Assembler | Illinois |
| 12 | Clara Dziurzynski | 12 | Daughter | — | Illinois |
| 13 | Frank Harris | 54 | Head | Bridge Tender | Illinois |
| 14 | Mary Harris | 49 | Wife | — | Illinois |
| 15 | Francis Harris | 28 | Daughter | — | Illinois |
| 16 | Monica Harris | 26 | Daughter | Comptometer Operator | Illinois |
| 17 | Anita Harris | 22 | Daughter | Comptometer Operator | Illinois |
| 18 | Andrew Mehringer | 22 | Head | Sorter | Illinois |
| 19 | Maybelle Mehringer | 18 | Wife | — | Illinois |
| 20 | John Klimas | 58 | Head | Tally Man | Poland |
| 21 | Sophie Klimas | 52 | Wife | — | Poland |
| 22 | Frank Klimas | 29 | Son | Chauffeur | Illinois |
| 23 | Adam Klimas | 26 | Son | Chauffeur | Illinois |
| 24 | Stanley Klimas | 24 | Son | Chauffeur | Illinois |
| 25 | Ernest Becker | 32 | Head | Chauffeur | Illinois |
| 26 | Catherine Becker | 21 | Wife | — | Illinois |
| 27 | Ernest Becker | 1 | Son | — | Illinois |
| 28 | Arlene Becker | 0 | Daughter | — | Illinois |
| 29 | James Mooney THIS PERSON | 80 | Head | — | Ireland |
| 30 | Catherine Mooney | 59 | Daughter | — | Illinois |
| 31 | Thomas Mooney | 50 | Son | Steam Fitter | Illinois |
| 32 | Margaret Casson | 46 | Daughter | — | Illinois |
| 33 | Milton Casson | 23 | Son | Laborer | Illinois |
| 34 | Margaret Casson | 3 | Daughter | — | Illinois |
| 35 | Mary Fitzgerald | 37 | Daughter | Clairvoyant | Illinois |
| 36 | Robert Fitzgerald | 15 | Son | — | Illinois |
| 37 | Henry Kordy | 49 | Head | Supervisor | Illinois |
| 38 | Natalie Kordy | 49 | Wife | — | Illinois |
| 39 | Robert Kordy | 20 | Son | Laborer | Illinois |
| 40 | Dorothy Kordy | 17 | Daughter | — | Illinois |
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)