RJ
Robert Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kootenai-County, Idaho
Our Model Tree links this Robert Johnson across the 1920, 1930 and 1940 US Censuses in Kootenai-County, Idaho (XGBoost, ~Confirmed), with identified parents Elmer & Elmer — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Idaho
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kootenai-County, Idaho |
| Surname | Johnson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Spirit Lake City |
| 1935 Residence (County) | Kootenai |
| Additional Details | |
| Income (1939) | 100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Spirit Lake City |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Eleanor Johnson | Daughter | — | 18 | ~1922 |
| Patricia Johnson | Daughter | — | 9 | ~1931 |
| Doris Johnson | Daughter | — | 16 | ~1924 |
| Elmer Johnson | Head | — | 54 | ~1886 |
| Robert Johnson | Son | — | 22 | ~1918 |
| Erna Johnson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Kootenai, Idaho
Son, age 1
Kootenai, Idaho · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Kootenai, Idaho
Son, age 12
Kootenai, Idaho · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Kootenai-County, Idaho
Son, age 22
Kootenai-County, Idaho · implied b. ~1918 — 6 household members
| Surname | Johnson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Spirit Lake City |
| 1935 Residence (County) | Kootenai |
| Income (1939) | 100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elmer Johnson (~0.92 confidence) and father Elmer Johnson (~0.92 confidence) and mother Erna Johnson (~0.92 confidence) and mother Anna Johnson (~0.92 confidence) and mother Emma Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elmer Johnson
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Elmer Johnson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Erna Johnson
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Emma Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Johnson
Son · 1940 · age 22 · b. ~1918 · Idaho
★ You are viewing this record
Sibling
Eleanor Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Johnson
Sibling · 1940 · age 9
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 — Kootenai-County, Idaho
Open full size
1940 US Federal Census — Kootenai-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00748-00694)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hilda O. Smith | 40 | Wife | — | Wisconsin |
| 42 | Robert E. Jones | 48 | Head | Chief Engineer | New York |
| 43 | Florence B. Jones | 47 | Wife | — | Minnesota |
| 44 | Grace P. Hasy | 27 | Lodger | Teacher | Idaho |
| 45 | Thelma M. Logue | 23 | Lodger | Teacher | Idaho |
| 46 | Signe B. Olson | 60 | Head | — | Minnesota |
| 47 | Vida G. Rose | 24 | Daughter | — | Montana |
| 48 | Roger L. Rose | 2 | Grandson | — | Idaho |
| 49 | Rigna P. Marmet | 0 | Granddaughter | — | Idaho |
| 50 | Elmer P. Johnson | 54 | Head | Blacksmith And Machinist | Sweden |
| 51 | Erna E. Johnson | 49 | Wife | — | Germany |
| 52 | Robert L. Johnson THIS PERSON | 22 | Son | — | Idaho |
| 53 | Eleanor L. Johnson | 18 | Daughter | — | Idaho |
| 54 | Doris E. Johnson | 16 | Daughter | — | Idaho |
| 55 | Patricia F. Johnson | 9 | Daughter | — | Washington |
| 56 | Craig O. Mcguinn | 62 | Head | — | North Dakota |
| 57 | Elma M. Mcguinn | 58 | Wife | — | Iowa |
| 58 | Ida J. Kofreliston|Kofreliston | 64 | Head | — | New York |
| 59 | Isaac J. Johnson | 48 | Head | Lumber Piler | Norway |
| 60 | Alin S. Johnson | 46 | Wife | — | Sweden |
| 61 | Sadie Wallace | 57 | Head | — | Wisconsin |
| 62 | Robert E. Wallace | 30 | Son | Laborer | Montana |
| 63 | Gustav A. Marklund | 41 | Head | Raker | Sweden |
| 64 | Hilda Marklund | 32 | Wife | — | North Dakota |
| 65 | James M. Villa | 64 | Head | — | Missouri |
| 66 | Otto W. Meschke | 50 | Head | Watchman Mill | Minnesota |
| 67 | Margaret M. Meschke | 36 | Wife | — | Russia |
| 68 | Edward W. Meschke | 16 | Son | — | North Dakota |
| 69 | Roland J. Meschke | 14 | Son | — | Idaho |
| 70 | Charlotte L. Meschke | 7 | Daughter | — | Idaho |
| 71 | Bertha Bacon | 53 | Head | Teacher | Minnesota |
| 72 | Clifton A. Bacon | 18 | Son | — | Minnesota |
| 73 | Allen G. Shiler | 36 | Son-in-law | Woods Foreman | Washington |
| 74 | Ethel R. Shiler | 30 | Daughter | — | Minnesota |
| 75 | Marcus O. Oftidal | 56 | Head | Blacksmith Helper | Norway |
| 76 | Inga Oftidal | 50 | Wife | — | Norway |
| 77 | Ove A. Oftidal | 26 | Son | — | Idaho |
| 78 | M. Nellie Gilmore | 66 | Head | — | England |
| 79 | Ogden L. Gilmore | 39 | Son | Sawyer | North Dakota |
| 80 | William E. Gilmore | 33 | Son | Carpenter | North Dakota |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 5 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)