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Elmer Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Elmer Jones across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents George & Minnie — first a head (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Jones |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rock Island City |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Pattern maker |
| Industry | Farm Imp. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 544 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Pattern Maker |
| Township / Ward | Rock Island City |
| Est. Birth Year | ~1899 |
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 Elmer | Age | Birth yr |
|---|---|---|---|---|
| George Jones | Other | — | 70 | ~1870 |
| Elmer Jones | Head | — | 41 | ~1899 |
| Zelma Jones | Spouse | — | 37 | ~1903 |
| Marjorie Jones | Daughter | — | 9 | ~1931 |
Census Appearances
1920
Rock Island, …
Son, age 22
Rock Island, Illinois · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Germany |
| Occupation | Driller |
| Industry | Arsenal |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Head, age 32
Rock Island, Illinois · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 29 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Germany |
| Occupation | Labor |
| Industry | City |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3750 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Head, age 41
Rock-Island-County, Illinois · implied b. ~1899 — 4 household members
| Surname | Jones |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rock Island City |
| 1935 Residence (County) | Rock Island |
| Occupation | Pattern maker |
| Industry | Farm Imp. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 544 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Elmer Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Jones (~0.92 confidence) and mother Minnie Jones (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Jones
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Minnie Jones
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Jones
Head · 1940 · age 41 · b. ~1899 · Illinois
★ 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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00876-00079)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A. Price | 22 | Lodger | Steel Cutter | Iowa |
| 2 | Morris Adolph Vene | 22 | Head | Mechanic | Illinois |
| 3 | Amelia Vene | 22 | Wife | Gaiter Making | Illinois |
| 4 | William Lepard | 41 | Lodger | Fireman | Iowa |
| 5 | Earl G. Sater | 53 | Lodger | General Agent | Missouri |
| 6 | Earl Hard | 22 | Head | Press Mach. Oper. | Illinois |
| 7 | Lois Hard | 21 | Wife | — | Illinois |
| 8 | Nancy Lee Hard | 2 | Daughter | — | Illinois |
| 9 | Catharine Vemere | 57 | Head | — | Germany |
| 10 | Hans Fuessel | 25 | Head | Washer | Illinois |
| 11 | Lenora Fuessel | 23 | Wife | — | Iowa |
| 12 | Frederick Fuessel | 3 | Son | — | Illinois |
| 13 | Nancy Fuessel | 2 | Daughter | — | Illinois |
| 14 | Joseph Berndt | 34 | Head | Mgr. Groc. | Michigan |
| 15 | Bernice Berndt | 35 | Wife | — | Minnesota |
| 16 | Yvonne Berndt | 1 | Daughter | — | Illinois |
| 17 | Nellie Teel | 60 | Wife | — | Minnesota |
| 18 | Leonard Holtschult | 55 | Roomer | Laborer | Ohio |
| 19 | Edward Kinestrum | 70 | Roomer | — | Illinois |
| 20 | John Feller | 73 | Head | Janitor | Switzerland |
| 21 | Mary Feller | 74 | Wife | — | Switzerland |
| 22 | Elmer Jones THIS PERSON | 41 | Head | Pattern Maker | Illinois |
| 23 | Zelma Jones | 37 | Wife | — | Belgium |
| 24 | Marjorie Jones | 9 | Daughter | — | Illinois |
| 25 | George Jones | 70 | Father | Watchman | Illinois |
| 26 | J. E. Jeffers | 37 | Head | Fireman | Iowa |
| 27 | Irma Jeffers | 35 | Wife | — | Iowa |
| 28 | Joseph Jeffers | 16 | Son | — | Iowa |
| 29 | Donna Jeffers | 12 | Daughter | — | Iowa |
| 30 | Vera Grant | 41 | Head | — | Illinois |
| 31 | Harold Grant | 20 | Son | Clerk Sales | Iowa |
| 32 | John Grant | 18 | Son | Janitor | Iowa |
| 33 | Edward Olsen | 56 | Head | Electrician | Illinois |
| 34 | Eva Olsen | 32 | Wife | — | Illinois |
| 35 | Marie Olsen | 10 | Daughter | — | Illinois |
| 36 | Edward Olsen | 7 | Son | — | Illinois |
| 37 | Jacqline Olsen | 5 | Daughter | — | Illinois |
| 38 | Betty Olsen | 4 | Daughter | — | Illinois |
| 39 | Barbara Olsen | 2 | Daughter | — | Illinois |
| 40 | Billea Olsen | 1 | Daughter | — | Illinois |
Pedigree Summary
Elmer
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)