JD
John Dempsey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lee-County, Illinois
Our Model Tree links this John Dempsey across the 1930 and 1940 US Censuses in Lee-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 8-person household.
Age 55
b. ~1885
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Illinois |
| Surname | Dempsey |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | South Dixon |
| 1935 Residence (County) | Lee |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 450 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | South Dixon |
| Est. Birth Year | ~1885 |
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 |
|---|---|---|---|---|
| Virgil Mccray | Other | — | 26 | ~1914 |
| Frances Dempsey | Son | — | 25 | ~1915 |
| Nellie Dempsey | Spouse | — | 50 | ~1890 |
| Anna Dempsey | Daughter | — | 16 | ~1924 |
| Mary Mccray | Other | — | 2 | ~1938 |
| Marie Mccray | Daughter | — | 21 | ~1919 |
| John Dempsey | Head | — | 55 | ~1885 |
| Pete Dempsey | Son | — | 20 | ~1920 |
Census Appearances
1930
Lee, Illinois
Head, age 42
Lee, Illinois · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | 10 |
| Veteran | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lee-County, Illinois
Head, age 55
Lee-County, Illinois · implied b. ~1885 — 8 household members
| Surname | Dempsey |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | South Dixon |
| 1935 Residence (County) | Lee |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 450 |
| Highest Grade | No 2 |
| 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 Dempsey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Dempsey
Head · 1940 · age 55 · b. ~1885 · 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 — Lee-County, Illinois
Open full size
1940 US Federal Census — Lee-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00836-00874)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marion Howard | 33 | Head | Baker | Illinois |
| 42 | Mildred Howard | 25 | Wife | — | Illinois |
| 43 | Earl D. Dutton | 27 | Head | Baker | Alabama |
| 44 | Lucile Dutton | 23 | Wife | — | Illinois |
| 45 | Rudol Miller | 26 | Head | Millwright | Illinois |
| 46 | Helen Miller | 27 | Wife | — | Illinois |
| 47 | Robert Miller | 7 | Son | — | Illinois |
| 48 | John Will Miller | 4 | Son | — | Illinois |
| 49 | Stanley H. Noble | 50 | Head | Night Watchman | Illinois |
| 50 | Della Noble | 45 | Wife | — | Illinois |
| 51 | Harold Noble | 26 | Son | Mechanic | Illinois |
| 52 | Arlene Noble | 22 | Daughter | — | Illinois |
| 53 | Nancy Lou Noble | 5 | Granddaughter | — | Illinois |
| 54 | Charles Hazelwood | 31 | Head | Laborer | Illinois |
| 55 | Ruby Hazelwood | 23 | Wife | — | Illinois |
| 56 | Agnes Hazelwood | 5 | Daughter | — | Illinois |
| 57 | Richard Hazelwood | 2 | Son | — | Illinois |
| 58 | W. M. Prince | 57 | Head | Clerk | Illinois |
| 59 | Louise Prince | 45 | Wife | — | Illinois |
| 60 | Helen Chreston | 85 | Mother | — | Illinois |
| 61 | Custis Wilson | 42 | Head | Supervision | England |
| 62 | Mable Wilson | 38 | Wife | — | Illinois |
| 63 | Phyllis Wilson | 17 | Daughter | — | Illinois |
| 64 | Tardina Wilson | 16 | Daughter | Housework | Illinois |
| 65 | Betty Jane Wilson | 5 | Daughter | — | Illinois |
| 66 | Richard Burton Wilson | 4 | Son | — | Illinois |
| 67 | Donald Eaton Wilson | 4 | Son | — | Illinois |
| 68 | Frances Valano | 39 | Head | Laborer | Illinois |
| 69 | John Dempsey THIS PERSON | 55 | Head | Laborer | Illinois |
| 70 | Nellie Dempsey | 50 | Wife | — | Illinois |
| 71 | Frances Dempsey | 25 | Son | Laborer | Illinois |
| 72 | Pete Dempsey | 20 | Son | Laborer | Illinois |
| 73 | Anna Mae Dempsey | 16 | Daughter | Waitress | Illinois |
| 74 | Marie Mccray | 21 | Daughter | — | Illinois |
| 75 | Virgil Mccray | 26 | Son-in-law | Laborer | Illinois |
| 76 | Mary K. Mccray | 2 | Granddaughter | — | Illinois |
| 77 | Frank Owens | 47 | Head | Watchman | Wisconsin |
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)