RD
Robert Douglas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Randolph-County, Illinois
Our Model Tree links this Robert Douglas across the 1910, 1920, 1930 and 1940 US Censuses in Randolph-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Isabelle — first a head (b.~1889), then head of a 5-person household.
Age 51
b. ~1889
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Randolph-County, Illinois |
| Surname | Douglas |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chester (part) |
| 1935 Residence (County) | Randolph |
| Additional Details | |
| Occupation | Farmer |
| Class of Worker | E |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Chester Part |
| Est. Birth Year | ~1889 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Ladis Gladis | Daughter | — | 21 | ~1919 |
| Robert Douglas | Head | — | 51 | ~1889 |
| Amelia Douglas | Spouse | — | 54 | ~1886 |
| Henry Haacke | Other | — | 24 | ~1916 |
| Shirley Gladis | Daughter | — | 3 | ~1937 |
Census Appearances
1910
Randolph, Illinois
Son, age 21
Randolph, Illinois · implied b. ~1889 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | Robert |
| 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 | Farm Laborer |
| Industry | Home Farm |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Randolph, Illinois
Head, age 31
Randolph, Illinois · implied b. ~1889 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Randolph, Illinois
Head, age 41
Randolph, Illinois · implied b. ~1889 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | Robt H |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 23 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Randolph-County, Illinois
Head, age 51
Randolph-County, Illinois · implied b. ~1889 — 5 household members
| Surname | Douglas |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chester (part) |
| 1935 Residence (County) | Randolph |
| Occupation | Farmer |
| Class of Worker | E |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Robert Douglas across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Douglas (~0.92 confidence) and mother Isabelle Douglas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Douglas
b. ~1850
Source father
● Household
· direct · ~0.92
Mother
Isabelle Douglas
b. ~1853
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Douglas
Head · 1940 · age 51 · b. ~1889 · 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 — Randolph-County, Illinois
Open full size
1940 US Federal Census — Randolph-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00872-00242)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edwin Wilson | 32 | Head | Laborer | Illinois |
| 42 | Elsie Wilson | 30 | Wife | Bookkeeper | Illinois |
| 43 | Ralph Eggemeyer | 32 | Head | Carpenter | Illinois |
| 44 | Lavenia Eggemeyer | 28 | Wife | — | Illinois |
| 45 | Roland Lee Eggemeyer | 10 | Son | — | Illinois |
| 46 | Don Arkel Eggemeyer | 5 | Son | — | Illinois |
| 47 | Anthony Molshoch | 53 | Head | Farmer | Illinois |
| 48 | Lena Molshoch | 42 | Wife | — | Missouri |
| 49 | Andrew Bert | 35 | Head | Case Soler | Missouri |
| 50 | Delma Bert | 32 | Wife | — | Illinois |
| 51 | Andrew Delbert Bert | 13 | Son | — | Illinois |
| 52 | Rudelle Bert | 11 | Daughter | — | Illinois |
| 53 | Verdelia Bert | 8 | Daughter | — | Illinois |
| 54 | Fred Helge | 69 | Head | Blacksmith | Illinois |
| 55 | Sophia Mcfadden | 55 | Head | — | Illinois |
| 56 | Clarence Mcfadden | 24 | Son | Farmer | Illinois |
| 57 | Cloris Mcfadden | 14 | Son | Helper At Home | Illinois |
| 58 | Arthur Knopp | 25 | Head | Sole Layer | Illinois |
| 59 | Esther Knopp | 23 | Wife | — | Illinois |
| 60 | Roger Knopp | 5 | Son | — | Illinois |
| 61 | Albert Fehr | 17 | Son-in-law | Inspector | Illinois |
| 62 | Wilber Dorlian | 24 | Head | Laborer | Illinois |
| 63 | Charlotte Dorlian | 20 | Wife | — | Illinois |
| 64 | Mike Kirando | 17 | Hired Hand | Farm Hand | Illinois |
| 65 | Roland Craig | 39 | Head | — | Illinois |
| 66 | Wilma Craig | 39 | Wife | Merchant | Illinois |
| 67 | Mary Cecil Craig | 13 | Daughter | — | Illinois |
| 68 | William Craig | 11 | Son | — | Illinois |
| 69 | Philady Ann Craig | 9 | Daughter | — | Illinois |
| 70 | Jiranda Lou Craig | 1 | Daughter | — | Illinois |
| 71 | Mary Jane Allen | 81 | Mother-in-law | — | Illinois |
| 72 | Robert Douglas THIS PERSON | 51 | Head | Farmer | Illinois |
| 73 | Amelia Douglas | 54 | Wife | — | Illinois |
| 74 | Ladis Gladis | 21 | Daughter | Dying Plant | Illinois |
| 75 | Shirley Ann Gladis | 3 | Daughter | — | Illinois |
| 76 | Henry Jr. Haacke | 24 | Hired Hand | Farm Help | Illinois |
| 77 | Rhodie Koenig | 43 | Head | Locker | Illinois |
| 78 | Mabel Koenig | 41 | Wife | — | Illinois |
| 79 | Jenette Koenig | 18 | Daughter | Transferring | Illinois |
| 80 | Dorothy Koenig | 14 | Daughter | — | Illinois |
Pedigree Summary
Robert
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)