RD
Robert Douglas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Robert Douglas across the 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 11-person household.
Age 17
b. ~1923
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Ohio |
| Surname | Douglas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Dayton City |
| Est. Birth Year | ~1923 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Irma Douglas | Daughter | — | 11 | ~1929 |
| Virginia Douglas | Daughter | — | 18 | ~1922 |
| John Douglas | Head | — | 42 | ~1898 |
| William Douglas | Son | — | 15 | ~1925 |
| Richard Douglas | Son | — | 6 | ~1934 |
| Isabelle Douglas | Spouse | — | 39 | ~1901 |
| Charles Douglas | Other | — | 2 | ~1938 |
| John Douglas | Son | — | 13 | ~1927 |
| Winifred Douglas | Daughter | — | 9 | ~1931 |
| James Douglas | Son | — | 19 | ~1921 |
| Robert Douglas | Son | — | 17 | ~1923 |
Census Appearances
1930
Montgomery, Ohio
Son, age 7
Montgomery, Ohio · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Montgomery-County, Ohio
Son, age 17
Montgomery-County, Ohio · implied b. ~1923 — 11 household members
| Surname | Douglas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Montgomery |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Douglas
Son · 1940 · age 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
Virginia Douglas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irma Douglas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Douglas
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Douglas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Douglas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Douglas
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Douglas
Sibling · 1940 · age 6
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 — Montgomery-County, Ohio
Open full size
1940 US Federal Census — Montgomery-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03254-00613)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emerson Chappell | 8 | Nephew | — | Ohio |
| 42 | Berneda Devaughn | 21 | Wife | — | Ohio |
| 43 | Amos Coleman | 26 | Head | Maid | S. Carolina |
| 44 | Roxie Coleman | 24 | Wife | — | S. Carolina |
| 45 | Dorthy Mae Coleman | 8 | Daughter | — | N. Carolina |
| 46 | William Lee Boyd | 22 | Lodger | Laborer | S. Carolina |
| 47 | Elsie Boyd | 20 | Lodger | — | Indiana |
| 48 | Ollie Mcclelland | 23 | Head | Shake Out | Tennessee |
| 49 | Esther Mcclelland | 23 | Wife | Laundress | Tennessee |
| 50 | James H. Mcclelland | 15 | Son | — | Tennessee |
| 51 | Alice Mcclelland | 12 | Daughter | — | Tennessee |
| 52 | Mordenner Mcclelland | 4 | Daughter | — | Tennessee |
| 53 | John H. Mcclelland | 4 | Son | — | Tennessee |
| 54 | Floyd Mcclelland | 28 | Brother | Pours Iron | Tennessee |
| 55 | John Douglas | 42 | Head | Moulder | Kentucky |
| 56 | Isabelle Douglas | 39 | Wife | — | Ohio |
| 57 | James Douglas | 19 | Son | — | Ohio |
| 58 | Virginia Douglas | 18 | Daughter | — | Ohio |
| 59 | Robert Douglas THIS PERSON | 17 | Son | — | Ohio |
| 60 | William Douglas | 15 | Son | — | Ohio |
| 61 | John Douglas | 13 | Son | — | Ohio |
| 62 | Irma Douglas | 11 | Daughter | — | Ohio |
| 63 | Winifred Douglas | 9 | Daughter | — | Ohio |
| 64 | Richard Douglas | 6 | Son | — | Ohio |
| 65 | Charles Douglas | 2 | Grandson | — | Ohio |
| 66 | Karl Leehman | 52 | Head | Proprietor | Iowa |
| 67 | Lavon Leehman | 34 | Wife | — | Indiana |
| 68 | Mary Leehman | 14 | Daughter | — | Illinois |
| 69 | Eugene Tate | 68 | Head | Laborer | Maryland |
| 70 | Margaret Brown | 48 | Lodger | — | Ohio |
| 71 | Richard Brown | 18 | Lodger | Porter | Ohio |
| 72 | Samuel M. Stevens | 55 | Head | — | Alabama |
| 73 | Allen Stevens | 21 | Son | Truck Driver | Alabama |
| 74 | Will Lawson | 22 | Lodger | — | — |
| 75 | Oscar Henry | 32 | Head | — | Georgia |
| 76 | Georgiana Henry | 12 | Daughter | — | Ohio |
| 77 | Frank Dallas Henry | 7 | Son | — | Ohio |
| 78 | Dorthy Jean Henry | 5 | Daughter | — | Ohio |
| 79 | Lucy Henry | 53 | Mother | — | Georgia |
| 80 | Critena Terrell | 21 | Cousin | House Maid | Georgia |
Related Census Records
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)