RN
Robert Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kittitas-County, Washington
Our Model Tree links this Robert Nelson across the 1920, 1930 and 1940 US Censuses in Kittitas-County, Washington (XGBoost, ~Confirmed), with identified parents Oscar & Albert — first a son (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kittitas-County, Washington |
| Surname | Nelson |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Roslyn City |
| 1935 Residence (County) | Kittitas |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Roslyn 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Naoma Nelson | Daughter | — | 17 | ~1923 |
| Albert Nelson | Head | — | 54 | ~1886 |
| Robert Nelson | Son | — | 22 | ~1918 |
Census Appearances
1920
Kittitas, Washington
Son, age 2
Kittitas, Washington · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Washington |
| Mother Tongue | English |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Kittitas, Washington
Son, age 12
Kittitas, Washington · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Robert D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Kittitas-County, Washington
Son, age 22
Kittitas-County, Washington · implied b. ~1918 — 3 household members
| Surname | Nelson |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Roslyn City |
| 1935 Residence (County) | Kittitas |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oscar Nelson (~0.92 confidence) and father Albert Nelson (~0.92 confidence) and mother Elizabeth Nelson (~0.92 confidence) and mother Alberta Nelson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Nelson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Albert Nelson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Nelson
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Alberta Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Nelson
Son · 1940 · age 22 · b. ~1918 · Washington
★ You are viewing this record
Sibling
Naoma Nelson
Sibling · 1940 · age 17
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 — Kittitas-County, Washington
Open full size
1940 US Federal Census — Kittitas-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04349-00539)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edith Wright | 54 | Wife | — | Wales |
| 42 | Vigo T. Mazanti | 55 | Head | Dept Manager | Wisconsin |
| 43 | Grace R. Mazanti | 42 | Wife | — | Washington |
| 44 | Harold V. Mazanti | 13 | Son | — | Washington |
| 45 | Ruth E. Mazanti | 12 | Daughter | — | Washington |
| 46 | Albert G. Nelson | 54 | Head | Bookkeeper | Washington |
| 47 | Robert D. Nelson THIS PERSON | 22 | Son | — | Washington |
| 48 | Naoma R. Nelson | 17 | Daughter | — | Washington |
| 49 | Louis Tache | 33 | Head | — | Canada-English |
| 50 | Gertrude Tache | 29 | Wife | — | Washington |
| 51 | Clyde F. Lemon | 51 | Head | Clerk | W. Virginia |
| 52 | Mamie E. Lemon | 50 | Wife | — | Colorado |
| 53 | Donald D. St. John | 29 | Head | Machine Runner | Washington |
| 54 | Lillie C. St. John | 25 | Wife | — | Washington |
| 55 | Donna L. St. John | 3 | Daughter | — | Washington |
| 56 | Peter Leresum | 35 | Head | Motor Man | Washington |
| 57 | Lorene H. Leresum | 36 | Wife | — | Washington |
| 58 | Lorene E. Leresum | 5 | Daughter | — | Washington |
| 59 | Elizabeth Lumsden | 65 | Lodger | — | California |
| 60 | August H. Gustafson | 67 | Head | Prop Cutter | Sweden |
| 61 | John Blazina | 67 | Head | Watchman | Austria |
| 62 | Antonia Blazina | 68 | Wife | — | Austria |
| 63 | William G. Briggs | 70 | Head | — | Scotland |
| 64 | Sarah Briggs | 64 | Wife | — | England |
| 65 | William Provitt | 28 | Lodger | — | Ohio |
| 66 | William Floyd Briggs | 42 | Son | Chimney Repairman | Washington |
| 67 | John Briggs | 39 | Son | Electrician | Washington |
| 68 | Harry Briggs | 36 | Son | Trucker | Washington |
| 69 | William Lumsden | 48 | Head | Commissioner | Washington |
| 70 | Edith A. Lumsden | 43 | Wife | — | Washington |
| 71 | Marjorie Lumsden | 20 | Daughter | — | Washington |
| 72 | William R. Lumsden | 17 | Son | Chainman | Washington |
| 73 | Robert P. Lumsden | 12 | Son | — | Washington |
| 74 | Edith L. Lumsden | 4 | Daughter | — | Washington |
| 75 | Joseph Schwab | 39 | Head | Owner | Washington |
| 76 | Anna Schwab | 38 | Wife | — | Illinois |
| 77 | Joseph R. Schwab | 9 | Son | — | Washington |
| 78 | Warren E. Schwab | 4 | Son | — | Washington |
| 79 | Harold Whittam | 23 | Head | Car Hopper | England |
| 80 | Floris A. Whittam | 20 | Wife | — | Washington |
Pedigree Summary
Robert + 1 sibling
Gen 1 · 4 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)