RJ
Robert Johnston — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Robert Johnston across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Daisy & Maude — first a head (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City & County of city |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Shipping Clerk |
| Industry | Wholesale Electric Sup |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 226 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Shipping Clerk |
| Township / Ward | Denver City County Of City |
| Est. Birth Year | ~1915 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Janice Johnston | Daughter | — | 3 | ~1937 |
| Robert Johnston | Head | — | 25 | ~1915 |
| Marjorie Johnston | Spouse | — | 21 | ~1919 |
Census Appearances
1920
Denver, Colorado
Son, age 4
Denver, Colorado · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ohio |
| Mother's Birthplace | New York |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Son, age 15
Denver, Colorado · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kansas |
| Mother's Birthplace | New York |
| Occupation | Errand boy |
| Industry | Electrical Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | no |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Head, age 25
Denver-County, Colorado · implied b. ~1915 — 3 household members
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City & County of city |
| 1935 Residence (County) | Denver |
| Occupation | Shipping Clerk |
| Industry | Wholesale Electric Sup |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 226 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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: mother Daisy Johnston (~0.92 confidence) and mother Maude Johnston (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Daisy Johnston
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Maude Johnston
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Johnston
Head · 1940 · age 25 · b. ~1915 · Colorado
★ 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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00486-00090)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruth Marston | 34 | Wife | — | Nebraska |
| 42 | Marie Marston | 15 | Daughter | — | Nebraska |
| 43 | Delbert Marston | 13 | Son | — | Nebraska |
| 44 | Elden Marston | 11 | Son | — | Nebraska |
| 45 | Duane Marston | 10 | Son | — | Nebraska |
| 46 | Della Marston | 9 | Daughter | — | Nebraska |
| 47 | George Findley | 62 | Father-in-law | — | Iowa |
| 48 | Isaac Hicks | 33 | Head | Truck Driver | Colorado |
| 49 | Pansy Hicks | 30 | Wife | — | Colorado |
| 50 | Violet Stewart | 18 | Sister-in-law | Housekeeper | Colorado |
| 51 | Patricia Stewart | 6 | Niece | — | Colorado |
| 52 | Walter G D Watts | 72 | Head | — | England |
| 53 | Marea Watts | 70 | Wife | Janitress | England |
| 54 | Walter G Watts | 28 | Son | Book Keeper | Colorado |
| 55 | Sherlah V Watts | 23 | Daughter | — | Colorado |
| 56 | Sam E Wright | 48 | Head | Lab Laborer | Colorado |
| 57 | Alice E Wright | 37 | Wife | — | Kansas |
| 58 | Frank Wright | 13 | Son | — | Colorado |
| 59 | Raymond Vance | 41 | Head | Laborer | Oklahoma |
| 60 | Kitty B Vance | 39 | Wife | — | Oklahoma |
| 61 | Isaac Yike | 61 | Head | — | Missouri |
| 62 | Maggie M Yike | 57 | Wife | Seamstress | Ohio |
| 63 | Joe Brown | 59 | Head | Laborer | Missouri |
| 64 | Alice Brown | 58 | Wife | — | Missouri |
| 65 | Robert Johnston THIS PERSON | 25 | Head | Shipping Clerk | Colorado |
| 66 | Marjorie Johnston | 21 | Wife | — | Colorado |
| 67 | Janice Johnston | 3 | Daughter | — | Colorado |
| 68 | Lewis H Landrith | 44 | Head | Barber | Illinois |
| 69 | Effie Landrith | 43 | Wife | Waitress | Illinois |
| 70 | Gene Landrith | 15 | Son | — | Illinois |
| 71 | Francine Landrith | 11 | Daughter | — | Illinois |
| 72 | Clifford Landrith | 5 | Son | — | Illinois |
| 73 | Charles Jones | 20 | Boarder | Truck Driver | Illinois |
| 74 | Aleta Jones | 20 | Daughter | — | Illinois |
| 75 | Rush Landrith | 65 | Uncle | — | Colorado |
| 76 | Cecil Willard | 45 | Head | Retail Grocery | Kansas |
| 77 | Edith D Willard | 41 | Wife | — | Iowa |
| 78 | Richard Willard | 18 | Son | Clerk | Kansas |
| 79 | Norman E Hansen | 27 | Head | Salesman | Wisconsin |
| 80 | Evelyn H Hansen | 25 | Wife | Beauty Stylist | Wisconsin |
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)