RJ
Ralph Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Minnehaha-County, South Dakota
Our Model Tree links this Ralph Jones across the 1920, 1930 and 1940 US Censuses in Minnehaha-County, South Dakota (XGBoost, ~Confirmed), with identified parents Mabel & Nellie — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Minnehaha-County, South Dakota |
| Surname | Jones |
| Given Name | Ralph E. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Sioux Falls City |
| 1935 Residence (County) | Minnehaha |
| Additional Details | |
| Occupation | Printing |
| Industry | Meat Pkg Plant |
| Class of Worker | PW |
| Income (1939) | 250 |
| Highest Grade | C-3 |
| 1935 Residence | Same House |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Printing |
| Township / Ward | Sioux Falls City |
| Est. Birth Year | ~1917 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Ralph Jones | Head | — | 55 | ~1885 |
| Ralph Jones | Son | — | 23 | ~1917 |
| Nellie Jones | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Minnehaha, South …
Son, age 3
Minnehaha, South Dakota · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Speaks English | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Minnehaha, South …
Son, age 14
Minnehaha, South Dakota · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Ralph E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Minnehaha-County, South …
Son, age 23
Minnehaha-County, South Dakota · implied b. ~1917 — 3 household members
| Surname | Jones |
| Given Name | Ralph E. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Sioux Falls City |
| 1935 Residence (County) | Minnehaha |
| Occupation | Printing |
| Industry | Meat Pkg Plant |
| Class of Worker | PW |
| Income (1939) | 250 |
| Highest Grade | C-3 |
| 1935 Residence | Same House |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 Ralph Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mabel Jones (~0.92 confidence) and mother Nellie Jones (~0.92 confidence) and father Ralph Jones (~0.92 confidence) and father Ralph Jones (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mabel Jones
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Nellie Jones
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Ralph Jones
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Ralph Jones
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
Ralph Jones
Son · 1940 · age 23 · b. ~1917 · South Dakota
★ 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 — Minnehaha-County, South Dakota
Open full size
1940 US Federal Census — Minnehaha-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03864-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jas. F. Mchone | 60 | Head | Laborer | Iowa |
| 2 | Josephine M. Mchone | 49 | Wife | — | Iowa |
| 3 | Earl T. Waring | 26 | Head | Attendant | South Dakota |
| 4 | Erma L. Waring | 23 | Wife | Bookkeeper | South Dakota |
| 5 | Ralph E. Jones | 55 | Head | Painter | Iowa |
| 6 | Nellie M. Jones | 56 | Wife | — | Iowa |
| 7 | Ralph E. Jr. Jones THIS PERSON | 23 | Son | Printing | South Dakota |
| 8 | Ruth Thorson | 44 | Head | — | South Dakota |
| 9 | Theodore Thorson | 58 | Brother | Truck Driver | South Dakota |
| 10 | Loyd Rullow | 26 | Lodger | Pack Meats | South Dakota |
| 11 | James Johnson | 30 | Lodger | Technician | South Dakota |
| 12 | Lehas J. Horgard | 54 | Head | Operator | South Dakota |
| 13 | Tina Horgard | 50 | Wife | — | Denmark |
| 14 | Leroy Horgard | 30 | Son | Helper | South Dakota |
| 15 | Adolph S. Anderson | 37 | Head | General Secy | South Dakota |
| 16 | Agnes M. Anderson | 37 | Wife | — | South Dakota |
| 17 | Lenore S. Anderson | 4 | Daughter | — | South Dakota |
| 18 | Barbara E. Anderson | 8 | Daughter | — | South Dakota |
| 19 | Lehas H. Anderson | 1 | Son | — | South Dakota |
| 20 | Amanda W. Olson | 65 | Head | — | Minnesota |
| 21 | Carl E. Olson | 25 | Son | Salesman | South Dakota |
| 22 | Walter S. Trumbull | 64 | Head | — | Wisconsin |
| 23 | Eurena C. Trumbull | 53 | Wife | — | Minnesota |
| 24 | Amanda C. Walker | 62 | Lodger | Matron | South Dakota |
| 25 | Oscar E. Johnson | 65 | Head | Carpenter | Minnesota |
| 26 | Bertha Johnson | 55 | Wife | — | Germany |
| 27 | Harry L. Sisson | 38 | Head | Salesman | South Dakota |
| 28 | Edith E. Sisson | 37 | Wife | — | South Dakota |
| 29 | Mauren D. Sisson | 7 | Daughter | — | South Dakota |
| 30 | William Schumacher | 74 | Head | — | Indiana |
| 31 | Anna Schumacher | 68 | Wife | — | Wisconsin |
| 32 | Daniel Fjeldeth | 38 | Head | Laborer | South Dakota |
| 33 | Anna Fjeldeth | 48 | Sister | — | Norway |
| 34 | Clara A. Fjeldeth | 29 | Sister | — | South Dakota |
| 35 | Alfred Polkinghorn | 42 | Head | Clerk | Iowa |
| 36 | Lucile Polkinghorn | 22 | Daughter | — | Iowa |
| 37 | Richard Polkinghorn | 13 | Son | — | Iowa |
| 38 | Christine Faldahl | 68 | Head | — | Wisconsin |
| 39 | Isaac Noteboom | 34 | Head | Plumber Helper | Iowa |
| 40 | Ruby A. Noteboom | 31 | Wife | Laborer | Nebraska |
Pedigree Summary
Ralph
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)