RB
Robert Black — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Robert Black across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 12-person household.
Age 23
b. ~1917
Male
Son
Born: Canada-English
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Black |
| Given Name | Robert M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Canada-English |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | clerk |
| Industry | Railroad office |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birthplace (normalized) | canada-english |
| Occupation | Clerk |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1917 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Bell Duvall Roy | Daughter | — | 27 | ~1913 |
| Robert Black | Head | — | 56 | ~1884 |
| Head Duvall Roy | Other | — | — | |
| Donald Duvall Roy | Son | — | 23 | ~1917 |
| Robert Black | Son | — | 23 | ~1917 |
| Albert Duvall Roy | Son | — | 17 | ~1923 |
| Robert Duvall Roy | Son | — | 16 | ~1924 |
| Lester Duvall Roy | Son | — | 26 | ~1914 |
| Alvin Duvall Roy | Son | — | 17 | ~1923 |
| Roy Duvall Roy | Son | — | 15 | ~1925 |
| Nita Duvall Roy | Spouse | — | 37 | ~1903 |
| Christina Black | Spouse | — | 55 | ~1885 |
Census Appearances
1930
Wayne, Michigan
Son, age 13
Wayne, Michigan · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | Robert M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Canada-English |
| Naturalization Status | Alien |
| Year of Immigration | 1923 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | canada-english |
1940
Wayne-County, Michigan
Son, age 23
Wayne-County, Michigan · implied b. ~1917 — 12 household members
| Surname | Black |
| Given Name | Robert M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Canada-English |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Naturalization Status | First papers filed |
| Occupation | clerk |
| Industry | Railroad office |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birthplace (normalized) | canada-english |
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 Black across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Black
Son · 1940 · age 23 · b. ~1917 · Michigan
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Sibling
Albert Duvall Roy
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alvin Duvall Roy
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bell Duvall Roy
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Duvall Roy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Duvall Roy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Duvall Roy
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Duvall Roy
Sibling · 1940 · age 16
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01889-00849)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ralph Wiggins | 34 | Head | Truck Driver | Michigan |
| 42 | Gladys Wiggins | 34 | Wife | — | Michigan |
| 43 | Alitta J. Wiggins | 12 | Daughter | — | Michigan |
| 44 | Alice Mae Wiggins | 11 | Daughter | — | Michigan |
| 45 | Raymond J. Wiggins | 7 | Son | — | Michigan |
| 46 | Shirley D. Wiggins | 4 | Son | — | Michigan |
| 47 | Ralph A. Wiggins | 3 | Daughter | — | Michigan |
| 48 | Kenneth Wiggins | 1 | Son | — | Michigan |
| 49 | William Wiggins | 0 | Son | — | Michigan |
| 50 | Robert P. Black | 56 | Head | Investigator | Scotland |
| 51 | Christina Black | 55 | Wife | — | Scotland |
| 52 | Robert M. Black THIS PERSON | 23 | Son | Clerk | Canada-English |
| 54 | Head Duvall, Roy | None | M | Retail Grocery | — |
| 55 | Nita Duvall, Roy | 37 | Wife | — | Michigan |
| 56 | Bell Duvall, Roy | 27 | Daughter | Checker | Michigan |
| 57 | Lester Duvall, Roy | 26 | Son | Produce Manager | Michigan |
| 58 | Donald Duvall, Roy | 23 | Son | Stock Man | Michigan |
| 59 | Albert Duvall, Roy | 17 | Son | Packer | Michigan |
| 60 | Alvin Duvall, Roy | 17 | Son | Attendant | Michigan |
| 61 | Robert Duvall, Roy | 16 | Son | — | Michigan |
| 62 | Roy Duvall, Roy | 15 | Son | — | Michigan |
| 63 | Russell Wheelerton | 40 | Head | Truck Driver | Canada-English |
| 64 | Jack Wheelerton | 20 | Son | Truck Driver | Canada-English |
| 65 | Marion Cowen | 45 | Housekeeper | Housekeeper | Canada-English |
| 66 | Jack Cowen | 25 | Son | Truck Driver | Canada-English |
| 68 | Kenneth Prichard | 44 | Head | Clerk (Office) | New York |
| 69 | Margy Prichard | 38 | Wife | — | Pennsylvania |
| 70 | Kenneth Prichard | 13 | Son | — | Ohio |
| 71 | Arnold Prichard | 10 | Son | — | Michigan |
| 72 | Virginia Prichard | 5 | Daughter | — | Michigan |
| 73 | Ramon Prichard | 2 | Son | — | Michigan |
| 74 | Benjamin Long | 45 | Head | Auto Electrician | Colorado |
| 75 | Grace Long | 38 | Wife | — | Illinois |
| 76 | Bert Long | 16 | Son | — | Michigan |
| 77 | Eleanor Long | 14 | Daughter | — | Michigan |
| 78 | Dorothy Long | 9 | Daughter | — | Michigan |
| 79 | Ernest Bonifield | 34 | Head | Paint Sprayer | Ohio |
| 80 | Eva Bonifield | 33 | Wife | — | Canada-English |
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)