RA
Robert Arnold — 1940 US Census Record
Model Tree available1940 United States Federal Census · Laporte-County, Indiana
Our Model Tree links this Robert Arnold across the 1920, 1930 and 1940 US Censuses in Laporte-County, Indiana (XGBoost, ~Confirmed), with identified parents August & Minnie — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Laporte-County, Indiana |
| Surname | Arnold |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Michigan City |
| 1935 Residence (County) | La Porte |
| Additional Details | |
| Highest Grade | C-1 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Michigan City |
| 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 |
|---|---|---|---|---|
| Lottie Arnold | Spouse | — | 45 | ~1895 |
| Robert Arnold | Son | — | 21 | ~1919 |
| Walter Arnold | Head | — | 45 | ~1895 |
Census Appearances
1920
Laporte, Indiana
Son, age 1
Laporte, Indiana · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Laporte, Indiana
Son, age 11
Laporte, Indiana · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Laporte-County, Indiana
Son, age 21
Laporte-County, Indiana · implied b. ~1919 — 3 household members
| Surname | Arnold |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Michigan City |
| 1935 Residence (County) | La Porte |
| Highest Grade | C-1 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 August Arnold (~0.84 confidence) and mother Minnie Arnold (~0.84 confidence) and mother Lottie Arnold (~0.92 confidence) and mother Lottie Arnold (~0.92 confidence) and father Walter Arnold (~0.92 confidence) and father Walter Arnold (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
August Arnold
b. ~1866
Source father>father
● Household
· direct · ~0.84
Mother
Minnie Arnold
b. ~1871
Source father>mother
● Household
· direct · ~0.84
Mother
Lottie Arnold
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Lottie Arnold
b. ~1896
Source mother
● Household
· direct · ~0.92
Father
Walter Arnold
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Walter Arnold
b. ~1896
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Arnold
Son · 1940 · age 21 · b. ~1919 · Indiana
★ 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 — Laporte-County, Indiana
Open full size
1940 US Federal Census — Laporte-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01069-00851)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Harrad | 53 | Head | Laborer | Indiana |
| 42 | Rose Harrad | 52 | Wife | — | Indiana |
| 43 | Francis Harrad | 28 | Son | Station Attendant | Indiana |
| 44 | Ruth Harrad | 22 | Daughter | Secretary | Indiana |
| 45 | Margaret Harrad | 13 | Daughter | — | Indiana |
| 46 | James Harrad | 10 | Son | — | Indiana |
| 47 | Walter Arnold | 45 | Head | Clerk | Indiana |
| 48 | Lottie Arnold | 45 | Wife | — | Indiana |
| 49 | Robert Arnold THIS PERSON | 21 | Son | — | Indiana |
| 50 | Henry Crabbe | 39 | Head | Clerk Manager | Indiana |
| 51 | Mary Crabbe | 35 | Wife | — | Illinois |
| 52 | Anishe|Aniske Crabbe | 67 | Mother | — | Indiana |
| 53 | Mary Crabbe | 15 | Step-daughter | — | Indiana |
| 54 | Verna Crabbe | 13 | Step-daughter | — | Indiana |
| 55 | Frances Crabbe | 11 | Step-daughter | — | Indiana |
| 56 | Rose Myers | 48 | Head | — | Indiana |
| 57 | Jean Myers | 21 | Daughter | Secretary | Indiana |
| 58 | Louise Mueller | 76 | Mother | — | Germany |
| 59 | Arnold Uebler | 27 | Head | Welder | Indiana |
| 60 | Alice Uebler | 27 | Wife | — | Indiana |
| 61 | Josephine Luton | 78 | Head | — | New York |
| 62 | Frederick Bartels | 47 | Head | Carpenter Helper | Illinois |
| 63 | Eda Bartels | 40 | Wife | — | Wisconsin |
| 64 | Ruth Bartels | 5 | Daughter | — | Indiana |
| 65 | Frederick Jr. Bartels | 2 | Son | — | Indiana |
| 66 | Raymond White | 23 | Head | Packer | New York |
| 67 | Thelma White | 24 | Wife | — | Illinois |
| 68 | Raymond Jr. White | 0 | Son | — | Indiana |
| 69 | Laura Stinchcomb | 63 | Head | — | Indiana |
| 70 | Lois Stinchcomb | 22 | Daughter | Teacher | Indiana |
| 71 | Frederick Hickman | 75 | Roomer | Barber | Indiana |
| 72 | Robert Stinchcomb | 10 | Grandson | — | Michigan |
| 73 | Joan Stinchcomb | 9 | Granddaughter | — | Michigan |
| 74 | Phillip Staback | 39 | Head | Janitor | Indiana |
| 75 | Clara Staback | 37 | Wife | — | Indiana |
| 76 | Mary Staback | 13 | Daughter | — | Indiana |
| 77 | Lucille Staback | 11 | Daughter | — | Indiana |
| 78 | Phillip Jr. Staback | 7 | Son | — | Indiana |
| 79 | Jeanie Charlton | 72 | Head | — | Indiana |
| 80 | Sara Charlton | 67 | Sister | — | Indiana |
Pedigree Summary
Robert
Gen 1 · 4 parents
~0.92
Gen 2 · 2 grandparents
~0.84
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)