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John Sheridan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Illinois
Our Model Tree links this John Sheridan across the 1930 and 1940 US Censuses in Lake-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Illinois |
| Surname | Sheridan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Waukegan City |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Floor Boy |
| Industry | Public Service |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1389 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Floor Boy |
| Township / Ward | Waukegan City |
| Est. Birth Year | ~1916 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Sheridan | Daughter | — | 37 | ~1903 |
| Ruth Sheridan | Daughter | — | 31 | ~1909 |
| Helen Sheridan | Daughter | — | 32 | ~1908 |
| Mary Sheridan | Head | — | 68 | ~1872 |
| Henry Sheridan | Son | — | 28 | ~1912 |
| Margaret Sheridan | Daughter | — | 26 | ~1914 |
| John Sheridan | Son | — | 24 | ~1916 |
| Leo Sheridan | Son | — | 34 | ~1906 |
Census Appearances
1930
Lake, Illinois
Son, age 15
Lake, Illinois · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sheridan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Illinois
Son, age 24
Lake-County, Illinois · implied b. ~1916 — 8 household members
| Surname | Sheridan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Waukegan City |
| 1935 Residence (County) | Lake |
| Occupation | Floor Boy |
| Industry | Public Service |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1389 |
| Highest Grade | Hs 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 Sheridan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Sheridan
Son · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Elizabeth Sheridan
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Sheridan
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Sheridan
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Sheridan
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Sheridan
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Sheridan
Sibling · 1940 · age 26
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 — Lake-County, Illinois
Open full size
1940 US Federal Census — Lake-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00830-00813)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur Hartman | 39 | Head | Ticket Agent | Germany |
| 42 | Anna Hartman | 39 | Wife | — | Wisconsin |
| 43 | Kenneth Hartman | 14 | Son | — | Wisconsin |
| 44 | Patricia Hartman | 12 | Daughter | — | Wisconsin |
| 45 | Walter Kotter | 49 | Lodger | — | Illinois |
| 46 | Aida Cassavant | 67 | Head | — | Iowa |
| 47 | Earl Shafer | 32 | Head | Hasher | Illinois |
| 48 | Martha Shafer | 18 | Wife | — | Illinois |
| 49 | Sharon Shafer | 0 | Daughter | — | Illinois |
| 50 | L. Clayton Cox | 47 | Head | Switchman | Iowa |
| 51 | Blanche Cox | 47 | Wife | — | Iowa |
| 52 | James Cox | 22 | Son | Linotype Operator | Iowa |
| 53 | W. Darius Cox | 18 | Son | Gardener | Iowa |
| 54 | H. Lee Cox | 14 | Son | — | Iowa |
| 55 | Charles Shafer | 54 | Head | Stationary Engineer | Indiana |
| 56 | Emma Shafer | 45 | Wife | Cook | Michigan |
| 57 | Anton Valentinic | 27 | Boarder | Mechanic Helper | Illinois |
| 58 | Vivian Valentinic | 23 | Daughter | — | Michigan |
| 59 | Charles Valentinic | 3 | Grandson | — | Michigan |
| 60 | Ludwig Amundsen | 60 | Head | Stationary Engineer | Norway |
| 61 | Mabel Amundsen | 52 | Wife | — | Michigan |
| 62 | Donald Amundsen | 23 | Son | Laborer | Illinois |
| 63 | Jean Barbara Amundsen | 8 | Daughter | — | Illinois |
| 64 | Mary Sheridan | 68 | Head | — | Illinois |
| 65 | Elizabeth Sheridan | 37 | Daughter | Operator | Illinois |
| 66 | Leo Sheridan | 34 | Son | Fire Drawer | Illinois |
| 67 | Helen Sheridan | 32 | Daughter | Clerk | Illinois |
| 68 | Ruth Sheridan | 31 | Daughter | Stenographer | Illinois |
| 69 | Henry Sheridan | 28 | Son | Clerk | Illinois |
| 70 | Margaret Sheridan | 26 | Daughter | Clerk | Illinois |
| 71 | John Sheridan THIS PERSON | 24 | Son | Floor Boy | Illinois |
| 72 | Orville Behrens | 25 | Head | Truck Driver | Illinois |
| 73 | Helen Behrens | 28 | Wife | — | Illinois |
| 74 | Eva Kern | 76 | Head | — | Indiana |
| 75 | Keziah Fitch | 79 | Head | — | Illinois |
| 76 | Hilton Fitch | 59 | Grandson | Salesman | Wisconsin |
| 77 | Gertrude Fitch | 54 | Daughter | — | Illinois |
| 78 | E. Valerie Hill | 40 | Head | — | Illinois |
| 79 | E. William Hill | 22 | Son | — | Indiana |
| 80 | D. John Hill | 18 | Son | New Worker | Michigan |
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)