JB
John Boyle — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this John Boyle across the 1910, 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed), with identified parents Edward & Edward — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Boyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Auburn village |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Occupation | Farm Labor |
| Industry | Farm |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farm Laborer |
| Township / Ward | Auburn Village |
| Est. Birth Year | ~1909 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Boyle | Daughter | — | 20 | ~1920 |
| Edward Boyle | Head | — | 52 | ~1888 |
| Betty Bray | Other | — | 4 | ~1936 |
| John Boyle | Son | — | 31 | ~1909 |
| Nellie Boyle | Spouse | — | 49 | ~1891 |
Census Appearances
1910
Sangamon, Illinois
Son, age 1
Sangamon, Illinois · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyle |
| Given Name | Johnnie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Sangamon, Illinois
Son, age 10
Sangamon, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyle |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Son, age 21
Sangamon, Illinois · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Odd jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sangamon-County, Illinois
Son, age 31
Sangamon-County, Illinois · implied b. ~1909 — 5 household members
| Surname | Boyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Auburn village |
| 1935 Residence (County) | Sangamon |
| Occupation | Farm Labor |
| Industry | Farm |
| Class of Worker | PW |
| Income (1939) | 0 |
| 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 John Boyle across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Boyle (~0.92 confidence) and father Edward Boyle (~0.92 confidence) and mother Nellie Boyle (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Boyle
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Edward Boyle
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Nellie Boyle
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Boyle
Son · 1940 · age 31 · b. ~1909 · Illinois
★ You are viewing this record
Sibling
Margaret Boyle
Sibling · 1940 · age 20
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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00884-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose Smelko | 47 | Wife | — | Illinois |
| 2 | Joseph Smelko | 26 | Son | Clerk | Illinois |
| 3 | John Barra | 49 | Brother-in-law | Labor | Illinois |
| 4 | William Morris | 43 | Head | Truck Driver | Illinois |
| 5 | Elizabeth Morris | 41 | Wife | — | Illinois |
| 6 | Ruth Ann Morris | 13 | Daughter | — | Illinois |
| 7 | Billie Morris | 10 | Son | — | Illinois |
| 8 | Thomas M. Williams | 59 | Head | Labor | England |
| 9 | Edward L. Boyle | 52 | Head | Labor | Illinois |
| 10 | Nellie Boyle | 49 | Wife | — | Illinois |
| 11 | John Boyle THIS PERSON | 31 | Son | Farm Labor | Illinois |
| 12 | Margaret Boyle | 20 | Daughter | New Worker | Illinois |
| 13 | Betty Bray | 4 | Grandchild | — | Illinois |
| 14 | Morris O'Brien | 56 | Head | Labor | Illinois |
| 15 | Laura O'Brien | 50 | Wife | — | Illinois |
| 16 | Raymond O'Brien | 30 | Son | Labor | Illinois |
| 17 | Ralph O'Brien | 21 | Son | Labor | Illinois |
| 18 | Richard O'Brien | 19 | Son | Labor | Illinois |
| 19 | Fred O'Brien | 17 | Son | New Worker | Illinois |
| 20 | James O'Brien | 15 | Son | New Worker | Illinois |
| 21 | Laurie O'Brien | 12 | Daughter | — | Illinois |
| 22 | Ethyl O'Brien | 10 | Daughter | — | Illinois |
| 23 | Eleanor Brachet | 69 | Head | — | Illinois |
| 24 | Carl Mcglothlin | 38 | Head | Janitor & Maintenance | Illinois |
| 25 | Ruth Mcglothlin | 37 | Wife | — | Illinois |
| 26 | Agnes Mcglothlin | 75 | Mother-in-law | — | England |
| 27 | Joe Mittershaw | 24 | Head | Loader | Illinois |
| 28 | Martha Mittershaw | 20 | Wife | — | Illinois |
| 29 | Margaret Mittershaw | 1 | Daughter | — | Illinois |
| 30 | William Wandless | 65 | Head | Owner | Illinois |
| 31 | Josephine Wandless | 64 | Wife | — | Illinois |
| 32 | Edward F. Boyle | 30 | Head | School Teacher | Illinois |
| 33 | Ellen Boyle | 25 | Wife | — | Illinois |
| 34 | Bruce Boyle | 3 | Son | — | Illinois |
| 35 | Paul Enrietta | 39 | Head | Bartender | Illinois |
| 36 | Regina Enrietta | 34 | Wife | — | Illinois |
| 37 | Donald Enrietta | 12 | Son | — | Illinois |
| 38 | John Kraffa | 32 | Head | Butcher | Illinois |
| 39 | Dorothy Kraffa | 30 | Wife | — | Ohio |
| 40 | Donna Kraffa | 3 | Daughter | — | Illinois |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 3 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)