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Robert Johnston — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Robert Johnston across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents John & Mable — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Johnston |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Plymouth city |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Machine operator |
| Industry | Automobile factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1372 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Machine Operator |
| Township / Ward | Plymouth 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Betty Johnston | Daughter | — | 23 | ~1917 |
| Jane Johnston | Daughter | — | 12 | ~1928 |
| John Johnston | Head | — | 53 | ~1887 |
| Robert Johnston | Son | — | 24 | ~1916 |
| John Johnston | Son | — | 15 | ~1925 |
| Mabel Johnston | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Wayne, Michigan
Son, age 4
Wayne, Michigan · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert H |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Son, age 14
Wayne, Michigan · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Son, age 24
Wayne-County, Michigan · implied b. ~1916 — 6 household members
| Surname | Johnston |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Plymouth city |
| 1935 Residence (County) | Wayne |
| Occupation | Machine operator |
| Industry | Automobile factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1372 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Johnston (~0.92 confidence) and mother Mable Johnston (~0.92 confidence) and father John Johnston (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnston
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mable Johnston
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
John Johnston
b. ~1889
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Johnston
Son · 1940 · age 24 · b. ~1916 · Michigan
★ You are viewing this record
Sibling
Betty Johnston
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Johnston
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Johnston
Sibling · 1940 · age 15
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
40 people indexed on this census page (nara:1940:m-t0627-01835-00388)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Scott, Lois Williams | 23 | Sister-in-law | Waitress | Tennessee |
| 42 | Andrews, Rice Williams | 18 | Brother-in-law | Inspector | Tennessee |
| 43 | Sterling Bregman | 33 | Head | Salesman | Michigan |
| 44 | Evelyn Bregman | 27 | Wife | — | Michigan |
| 45 | Marilyn H. Bregman | 0 | Daughter | — | Michigan |
| 46 | Leo Hughes | 50 | Head | Electrician | New York |
| 47 | Mary Hughes | 43 | Wife | — | New York |
| 48 | Dorothy Hughes | 21 | Daughter | Salesclerk | Michigan |
| 49 | Lenore Hughes | 20 | Daughter | Stenographer | Michigan |
| 50 | Bert Gill | 67 | Head | — | Michigan |
| 51 | Minnie Gill | 70 | Wife | — | Michigan |
| 52 | John Mertens | 81 | Head | — | Michigan |
| 53 | Mary Mertens | 51 | Daughter | — | Michigan |
| 54 | Perry J. Richwine | 62 | Head | Toolmaker | Michigan |
| 55 | Lydia Richwine | 56 | Wife | — | Pennsylvania |
| 56 | John Johnston | 53 | Head | Tool And Die Maker | Pennsylvania |
| 57 | Mabel A. Johnston | 53 | Wife | — | Michigan |
| 58 | Robert H. Johnston THIS PERSON | 24 | Son | Machine Operator | Michigan |
| 59 | Betty R. Johnston | 23 | Daughter | Assembler | Michigan |
| 60 | John S. Johnston | 15 | Son | — | Michigan |
| 61 | Jane M. Johnston | 12 | Daughter | — | Michigan |
| 62 | William S. Lake | 58 | Head | General Real Estate Agent | Ohio |
| 63 | Jessie X. Lake | 53 | Wife | — | Ohio |
| 64 | William A. Lake | 23 | Head | Machine Operator | Michigan |
| 65 | Virginia Lake | 19 | Wife | — | Michigan |
| 66 | William Jr. Lake | 1 | Son | — | Michigan |
| 67 | Andrew G. Dunn | 49 | Head | President | Kentucky |
| 68 | Marie S. Dunn | 44 | Wife | — | Michigan |
| 69 | Mary E. Slater | 74 | Mother-in-law | — | England |
| 70 | Clarence Moore | 44 | Head | Proprietor | New Jersey |
| 71 | Lulu R. Moore | 41 | Wife | — | New Jersey |
| 72 | Helen Moore | 12 | Daughter | — | New Jersey |
| 73 | Richard Moore | 10 | Son | — | New Jersey |
| 74 | Bertha Kehrl | 71 | Head | — | Germany |
| 75 | Adolph Wollgast | 67 | Brother | — | Michigan |
| 76 | Frederick Ballou | 62 | Head | Salesman | Michigan |
| 77 | Amanda Ballou | 59 | Wife | Insurance Agent | Sweden |
| 78 | William Clarke | 36 | Head | Clerical Work | Michigan |
| 79 | Jane Clarke | 36 | Wife | — | Pennsylvania |
| 80 | Carol Clarke | 0 | Daughter | — | Michigan |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 3 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)