RN
Roy Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ada-County, Idaho
Our Model Tree links this Roy Nelson across the 1920, 1930 and 1940 US Censuses in Ada-County, Idaho (XGBoost, ~Confirmed), with identified parents Chris & Agda — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Idaho
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ada-County, Idaho |
| Surname | Nelson |
| Given Name | Roy A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Franklin Precinct |
| 1935 Residence (County) | Ada |
| Additional Details | |
| Occupation | bookkeeping |
| Industry | general contractor |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 300 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Occupation | Bookkeeping |
| Township / Ward | Franklin Precinct |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Roy | Age | Birth yr |
|---|---|---|---|---|
| John Nelson | Son | — | 14 | ~1926 |
| Agda Nelson | Spouse | — | 47 | ~1893 |
| Chris Nelson | Head | — | 54 | ~1886 |
| Roy Nelson | Son | — | 21 | ~1919 |
Census Appearances
1920
Ada, Idaho
Son, age 2
Ada, Idaho · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Roy A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Norway |
| Mother's Birthplace | Sweden |
| Mother Tongue | Norwegian |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Ada, Idaho
Son, age 11
Ada, Idaho · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Norway |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Ada-County, Idaho
Son, age 21
Ada-County, Idaho · implied b. ~1919 — 4 household members
| Surname | Nelson |
| Given Name | Roy A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Franklin Precinct |
| 1935 Residence (County) | Ada |
| Occupation | bookkeeping |
| Industry | general contractor |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 300 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| 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 Roy Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chris Nelson (~0.92 confidence) and mother Agda Nelson (~0.92 confidence) and mother Agta Nelson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chris Nelson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Agda Nelson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Agta Nelson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Roy Nelson
Son · 1940 · age 21 · b. ~1919 · Idaho
★ You are viewing this record
Sibling
John Nelson
Sibling · 1940 · age 14
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 — Ada-County, Idaho
Open full size
1940 US Federal Census — Ada-County, Idaho
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00736-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha E Smith | 20 | Wife | — | Idaho |
| 42 | Jerry Smith | 1 | Son | — | Idaho |
| 43 | Roy M Myers | 25 | Head | Service Man | Idaho |
| 44 | Betty Lou Myers | 19 | Wife | — | Idaho |
| 45 | Christine Metier | 57 | Head | — | Scotland |
| 46 | James Metier | 22 | Son | Farmer | Idaho |
| 47 | John G Metier | 21 | Son | Waiter | Idaho |
| 48 | Alexander W Metier | 16 | Son | — | Idaho |
| 49 | Ernest D Money | 32 | Head | Printer | Wisconsin |
| 50 | Lillie Money | 25 | Wife | — | Nebraska |
| 51 | Walter E Money | 4 | Son | — | Florida |
| 52 | Elsie Mae Money | 3 | Daughter | — | Florida |
| 53 | Beverly Ann Money | 1 | Daughter | — | Idaho |
| 54 | Haakon Jacobson | 57 | Head | Farmer | Norway |
| 55 | Alma Jacobson | 48 | Wife | — | Sweden |
| 56 | Wilhelm J Jacobson | 26 | Son | Laborer Warehouse | Idaho |
| 57 | Kenneth Jacobson | 21 | Son | Laborer Warehouse | Idaho |
| 58 | William Nelson | 42 | Head | Carpenter Helper | Wyoming |
| 59 | Esther O Nelson | 27 | Wife | — | Wyoming |
| 60 | Charles Nelson | 7 | Son | — | Idaho |
| 61 | Mae Nelson | 5 | Daughter | — | Idaho |
| 62 | Richard Nelson | 2 | Son | — | Idaho |
| 63 | Ronald Nelson | 0 | Son | — | Idaho |
| 64 | Ralph E Campbell | 51 | Head | Farmer | Oregon |
| 65 | Blanche Campbell | 51 | Wife | — | Nebraska |
| 66 | Neal Ostert | 14 | Laborer | — | California |
| 67 | Charles B Hobson | 66 | Head | Farmer | Kansas |
| 68 | Minnie B Hobson | 64 | Wife | — | Michigan |
| 69 | Willard Hobson | 35 | Son | Agent | Kansas |
| 70 | John J Cory | 79 | Head | Farmer | Ontario |
| 71 | Elizabeth Cory | 67 | Wife | — | Michigan |
| 72 | Chris A Nelson | 54 | Head | Brick Layer | Norway |
| 73 | Agda E Nelson | 47 | Wife | Seamstress | Sweden |
| 74 | Roy A Nelson THIS PERSON | 21 | Son | Bookkeeping | Idaho |
| 75 | John R Nelson | 14 | Son | — | Idaho |
| 76 | Mark O Morgan | 24 | Head | Laborer | Idaho |
| 77 | William B Horn | 68 | Partner | Carpenter | California |
| 78 | Charles M Moore | 54 | Head | Attendant | Iowa |
| 79 | Nellie B Moore | 46 | Wife | — | Kansas |
Pedigree Summary
Roy + 1 sibling
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)