RA
Robert Arnold — 1940 US Census Record
Model Tree available1940 United States Federal Census · Logan-County, Illinois
Our Model Tree links this Robert Arnold across the 1920, 1930 and 1940 US Censuses in Logan-County, Illinois (XGBoost, ~Confirmed), with identified parents Albert & Mrs — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Logan-County, Illinois |
| Surname | Arnold |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lincoln |
| 1935 Residence (County) | Logan |
| Additional Details | |
| Occupation | Clerk |
| Industry | Logan Co S.A. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Lincoln |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Arnold | Son | — | 21 | ~1919 |
| Mrs Arnold | Spouse | — | 52 | ~1888 |
| Albert Arnold | Head | — | 56 | ~1884 |
Census Appearances
1920
Logan, Illinois
Son, age 1
Logan, Illinois · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Robert F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Logan, Illinois
Son, age 11
Logan, Illinois · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Logan-County, Illinois
Son, age 21
Logan-County, Illinois · implied b. ~1919 — 3 household members
| Surname | Arnold |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lincoln |
| 1935 Residence (County) | Logan |
| Occupation | Clerk |
| Industry | Logan Co S.A. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| 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 Robert Arnold across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Arnold (~0.92 confidence) and mother Mrs Arnold (~0.92 confidence) and mother Vera Arnold (~0.92 confidence) and mother Ura Arnold (~0.92 confidence) and father Albert Arnold (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Arnold
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mrs Arnold
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Vera Arnold
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Ura Arnold
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
Albert Arnold
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Arnold
Son · 1940 · age 21 · b. ~1919 · 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 — Logan-County, Illinois
Open full size
1940 US Federal Census — Logan-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00838-00353)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rosalie Glenn | 5 | Daughter | — | Illinois |
| 42 | James A. Glenn | 2 | Son | — | Illinois |
| 43 | William J. Ford | 28 | Head | Manager | Scotland |
| 44 | Kathryn Ford | 26 | Wife | — | Illinois |
| 45 | Judith Kathryn Ford | 0 | Daughter | — | Illinois |
| 46 | George M. Ryan | 35 | Head | Clerk | Illinois |
| 47 | Irene R. Ryan | 36 | Wife | Clerk | Illinois |
| 48 | Fred Kavelman | 24 | Head | Truck Driver | Illinois |
| 49 | Louise Kavelman | 21 | Wife | — | Illinois |
| 50 | August Kavelman | 52 | Head | Patrolman | Germany |
| 51 | Jessie Kavelman | 46 | Wife | — | Illinois |
| 52 | William Kavelman | 23 | Son | Truck Driver | Illinois |
| 53 | Jennie Graham | 73 | Head | — | Illinois |
| 54 | Emma F. Hartman | 71 | Lodger | — | Ohio |
| 55 | Albert N. Arnold | 56 | Head | Superintendent | Illinois |
| 56 | Mrs. May Arnold | 52 | Wife | — | Illinois |
| 57 | Robert L. Arnold THIS PERSON | 21 | Son | Clerk | Illinois |
| 58 | Mary S. Clasts | 48 | Head | Clerk | Illinois |
| 59 | Charlene Gaston | 24 | Roomer | Stenographer | Illinois |
| 60 | Oscar M. Ganz | 43 | Head | Optical | Illinois |
| 61 | Lydia M. Ganz | 43 | Wife | — | Ohio |
| 62 | Edna M. Ganz | 25 | Daughter | Optical | Illinois |
| 63 | Herbert F. Ganz | 23 | Son | Optical | Illinois |
| 64 | Elenore R. Ganz | 21 | Daughter | Optical | Illinois |
| 65 | Florence J. Wodetzky | 74 | Head | — | Illinois |
| 66 | Anna C. Wodetzky | 71 | Sister | — | Illinois |
| 67 | Ella E. Wodetzky | 72 | Sister | — | Illinois |
| 68 | Laura A. Wodetzky | 70 | Sister | — | Illinois |
| 69 | Roberta Maud H. Wodetzky | 67 | Sister | — | Illinois |
| 70 | James A. Corfom | 36 | Head | Osteopath | Illinois |
| 71 | Irene S. Corfom | 35 | Wife | — | Missouri |
| 72 | Bill A. More | 52 | Head | — | Illinois |
| 73 | Mary A. More | 63 | Wife | — | Illinois |
| 74 | Minnie Shackelford | 65 | Sister-in-law | — | Illinois |
| 75 | Clara Atteberry | 59 | Head | — | Illinois |
| 76 | John Morrison | 55 | Head | Foreman | Illinois |
| 77 | Bertha Morrison | 53 | Wife | — | Illinois |
| 78 | Velma S. Morrison | 24 | Daughter | Stenographer | Illinois |
| 79 | Harold H. Morrison | 21 | Son | Labor | Illinois |
| 80 | Paul E. Morrison | 18 | Son | — | Illinois |
Pedigree Summary
Robert
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)