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John Doyle — 1940 US Census Record
Model Tree available1940 United States Federal Census · Morgan-County, Illinois
Our Model Tree links this John Doyle across the 1920, 1930 and 1940 US Censuses in Morgan-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Catherine — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morgan-County, Illinois |
| Surname | Doyle |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Morgan |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Bridge Fact. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 720 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bookkeeper |
| Township / Ward | Jacksonville |
| Est. Birth Year | ~1915 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Doyle | Head | — | 53 | ~1887 |
| John Doyle | Son | — | 25 | ~1915 |
| Thomas Doyle | Son | — | 23 | ~1917 |
| Catherine Doyle | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Morgan, Illinois
Son, age 5
Morgan, Illinois · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doyle |
| Given Name | John E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Morgan, Illinois
Son, age 15
Morgan, Illinois · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doyle |
| Given Name | John E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Morgan-County, Illinois
Son, age 25
Morgan-County, Illinois · implied b. ~1915 — 4 household members
| Surname | Doyle |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Morgan |
| Occupation | Bookkeeper |
| Industry | Bridge Fact. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 720 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| 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 Doyle across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Doyle (~0.92 confidence) and mother Catherine Doyle (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Doyle
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Catherine Doyle
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Doyle
Son · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
Thomas Doyle
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 — Morgan-County, Illinois
Open full size
1940 US Federal Census — Morgan-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00861-00441)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth Herndon | 42 | Wife | — | Illinois |
| 2 | Frank Ham | 67 | Head | — | Illinois |
| 3 | Anna Ham | 64 | Wife | — | Illinois |
| 4 | John M. Doyle | 53 | Head | Electrical Contractor | Illinois |
| 5 | Catherine Doyle | 52 | Wife | — | Illinois |
| 6 | John E. Doyle THIS PERSON | 25 | Son | Bookkeeper | Illinois |
| 7 | Thomas J. Doyle | 23 | Son | Insurance Salesman | Illinois |
| 8 | Geo E. Belzer | 64 | Head | Plumber | Illinois |
| 9 | Wife Belzer | None | F | — | — |
| 10 | Florence Belzer | 21 | Son | Plumber | Illinois |
| 11 | Rex Hanley | 26 | Lodger | Presser | Illinois |
| 12 | Dorothy Hanley | 24 | Lodger | Beauty Operator | Illinois |
| 13 | John Walkup | 23 | Lodger | Carpenter | Illinois |
| 14 | Allie Walkup | 22 | Lodger | — | Illinois |
| 15 | Robert Lee Walkup | 1 | Lodger | — | Illinois |
| 16 | End Of Block | None | — | — | — |
| 17 | Eva Potter | 81 | Head | — | Iowa |
| 18 | Ella Birdsell | 61 | Nurse | House Keeper | Illinois |
| 19 | Swain Marshall | 55 | Head | Owner Of Meat Market | Illinois |
| 20 | Ruth Marshall | 45 | Wife | — | Illinois |
| 21 | Ruth Marshall | 23 | Daughter | Inspector | Illinois |
| 22 | Harold Marshall | 20 | Son | Meat Cutter | Illinois |
| 23 | Margaret Marshall | 18 | Daughter | — | Illinois |
| 24 | Thelma Marshall | 16 | Daughter | — | Illinois |
| 25 | John Marshall | 13 | Son | — | Illinois |
| 26 | Catherine Sweeney | 84 | Head | — | Ireland |
| 27 | Mary A. Sweeney | 55 | Daughter | — | Illinois |
| 28 | D. Scott Sweeney | 53 | Son | — | Illinois |
| 29 | Hannah Sweeney | 51 | Daughter | — | Illinois |
| 30 | Francis Sweeney | 29 | Son | Painter | Illinois |
| 31 | Catherine Sweeney | 27 | Daughter | — | Illinois |
| 32 | Ruth Tiffon | 80 | Head | Retired | Illinois |
| 33 | Malcolm Genge | 24 | Head | Salesman | Illinois |
| 34 | Marion Genge | 27 | Wife | Book Keeper | Illinois |
| 35 | Walter Bates | 48 | Head | Trucking | Kentucky |
| 36 | Reese D. Bates | 9 | Son | — | Illinois |
| 37 | S. D. Swartz | 43 | Head | Salesman | Illinois |
| 38 | Eula Swartz | 41 | Wife | Floor Lady | Illinois |
| 39 | E. W. Marshall | 65 | Head | — | Illinois |
| 40 | Ida M. Marshall | 67 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
John + 1 sibling
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)