JC
James Cavanaugh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Cavanaugh across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 5-person household.
Age 52
b. ~1888
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Cavanaugh |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Motorman |
| Industry | Street Railway |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1982 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Motorman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1888 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Katherine Harrison | Other | — | 54 | ~1886 |
| Margaret Cavanaugh | Spouse | — | 52 | ~1888 |
| Katherine Cavanaugh | Daughter | — | 9 | ~1931 |
| James Cavanaugh | Head | — | 52 | ~1888 |
| Thomas Cavanaugh | Son | — | 12 | ~1928 |
Census Appearances
1920
Cook, Illinois
Head, age 37
Cook, Illinois · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kavanagh |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Un |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Grocery store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 47
Cook, Illinois · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cavanaugh |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1899 |
| Age at First Marriage | 34 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stock Receiver |
| Industry | Mach. Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 12,000 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 52
Cook-County, Illinois · implied b. ~1888 — 5 household members
| Surname | Cavanaugh |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Motorman |
| Industry | Street Railway |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1982 |
| Highest Grade | H-4 |
| 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 Cavanaugh 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 Cavanaugh
Head · 1940 · age 52 · b. ~1888 · 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-t0627-00952-00587)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Genevieve Jorsch | 38 | Wife | — | Wisconsin |
| 42 | Robert Jorsch | 10 | Son | — | Illinois |
| 43 | Robert Hamilton | 47 | Head | Clerk | Ireland |
| 44 | Ethel Hamilton | 46 | Wife | — | Illinois |
| 45 | Genevieve Hamilton | 14 | Daughter | — | Illinois |
| 46 | John Biborski | 34 | Head | Clerk Office | Illinois |
| 47 | Jean Biborski | 36 | Sister | Clerk | Illinois |
| 48 | Forrest Bousman | 29 | Head | Mountain Manager | Illinois |
| 49 | Mabel Bousman | 27 | Wife | — | Illinois |
| 50 | Walter Mcnally | 45 | Head | Brick Layer | Ireland |
| 51 | Ann Mcnally | 39 | Wife | — | Ireland |
| 52 | Ann Mcnally | 16 | Daughter | — | Illinois |
| 53 | Thomas Mcnally | 8 | Son | — | Illinois |
| 54 | Charles Heaper | 28 | Head | Clinical Checker | Illinois |
| 55 | Helen Heaper | 21 | Wife | — | Illinois |
| 56 | Charles H Anderson | 50 | Head | Maintenance Man | Illinois |
| 57 | Vera Anderson | 50 | Wife | — | Illinois |
| 58 | Estelle Elder | 18 | Step Daughter | — | Illinois |
| 59 | Frank J Neuburger | 48 | Head | Draftsman | Germany |
| 60 | Ida Neuburger | 45 | Wife | — | Illinois |
| 61 | Lorraine Neuburger | 20 | Daughter | Dental Bill Clerk | Illinois |
| 62 | Kenneth Neuburger | 14 | Son | — | Illinois |
| 63 | Anna Neuburger | 73 | Mother | — | Germany |
| 64 | Neils Davidson | 38 | Head | Salesman | Illinois |
| 65 | Francis Davidson | 35 | Wife | Stenographer | Illinois |
| 66 | Wilhelmina Davidson | 79 | Mother | — | Sweden |
| 67 | Adolph Hoffmeister | 68 | Head | Watchman | Germany |
| 68 | Mary L Hoffmeister | 62 | Wife | — | Illinois |
| 69 | Arthur J Hoffmeister | 40 | Son | Mail Handler | Illinois |
| 70 | William Kennelly | 47 | Head | Asst Chief Sta Eng | Illinois |
| 71 | Ann Kennelly | 45 | Wife | — | Illinois |
| 72 | William Kennelly | 16 | Son | Dental Helper | Illinois |
| 73 | La Verne Kennelly | 11 | Daughter | — | Illinois |
| 74 | Jack Kennelly | 9 | Son | — | Illinois |
| 75 | Alice Kennelly | 7 | Daughter | — | Illinois |
| 76 | James Cavanaugh THIS PERSON | 52 | Head | Motorman | Ireland |
| 77 | Margaret Cavanaugh | 52 | Wife | — | Illinois |
| 78 | Thomas Cavanaugh | 12 | Son | — | Illinois |
| 79 | Katherine Cavanaugh | 9 | Daughter | — | Illinois |
| 80 | Katherine Harrison | 54 | Mother in Law | Addressographer | 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)