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Robert Gardner — 1940 US Census Record
Model Tree available1940 United States Federal Census · Madison-County, Indiana
Our Model Tree links this Robert Gardner across the 1920, 1930 and 1940 US Censuses in Madison-County, Indiana (XGBoost, ~Confirmed), with identified parents Calvin & Calvin — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Indiana |
| Surname | Gardner |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Chesterfield town |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 120 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Clerk |
| Township / Ward | Chesterfield Town |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Gardner | Son | — | 23 | ~1917 |
| Barbara Gardner | Daughter | — | 18 | ~1922 |
| Mabis Gardner | Daughter | — | 16 | ~1924 |
| Mildred Gardner | Spouse | — | 44 | ~1896 |
| Calvin Gardner | Head | — | 49 | ~1891 |
Census Appearances
1920
Madison, Indiana
Son, age 3
Madison, Indiana · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Madison, Indiana
Son, age 13
Madison, Indiana · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Madison-County, Indiana
Son, age 23
Madison-County, Indiana · implied b. ~1917 — 5 household members
| Surname | Gardner |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Chesterfield town |
| 1935 Residence (County) | Madison |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 120 |
| Highest Grade | H-4 |
| 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 Gardner across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Calvin Gardner (~0.92 confidence) and father Calvin Gardner (~0.92 confidence) and mother Mildred Gardner (~0.92 confidence) and mother Mildred Gardner (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Calvin Gardner
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Calvin Gardner
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Mildred Gardner
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Mildred Gardner
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Gardner
Son · 1940 · age 23 · b. ~1917 · Indiana
★ You are viewing this record
Sibling
Barbara Gardner
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabis Gardner
Sibling · 1940 · age 16
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 — Madison-County, Indiana
Open full size
1940 US Federal Census — Madison-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01074-00513)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Chester R. Babbs | 45 | Head | Safety Director | Indiana |
| 2 | Marie O. Babbs | 43 | Wife | — | Indiana |
| 3 | Leon Babbs | 21 | Son | Stock Clerk | Indiana |
| 4 | Calvin E. Gardner | 49 | Head | Electrician | Indiana |
| 5 | Mildred A. Gardner | 44 | Wife | — | Indiana |
| 6 | Robert A. Gardner THIS PERSON | 23 | Son | Clerk | Indiana |
| 7 | Barbara Joan Gardner | 18 | Daughter | — | Indiana |
| 8 | Mabis K. Gardner | 16 | Daughter | Waitress | Indiana |
| 9 | Lyle Shaw | 42 | Head | Repairman | Illinois |
| 10 | Ruth Shaw | 41 | Wife | — | Illinois |
| 11 | George Shaw | 18 | Son | — | Illinois |
| 12 | Ira S. Marsh | 32 | Head | Research Worker | Indiana |
| 13 | Velma A. Marsh | 28 | Wife | — | Indiana |
| 14 | Billie Earl Jarvis | 11 | Stepson | — | Indiana |
| 15 | Ronald Max Jarvis | 10 | Stepson | — | Indiana |
| 16 | Theodore Stewart Jarvis | 8 | Stepson | — | Indiana |
| 17 | Carolyn Sue Jarvis | 6 | Daughter | — | Indiana |
| 18 | Robert Forest Marsh | 0 | Son | — | Indiana |
| 19 | Rayford D. Howe | 33 | Head | Auto Electrician | Indiana |
| 20 | Mary Howe | 29 | Wife | — | Indiana |
| 21 | Russell Don Howe | 5 | Son | — | Indiana |
| 22 | Jerry Howe | 1 | Son | — | Indiana |
| 23 | Barbara Sullivan | 17 | Cousin | — | Michigan |
| 24 | Walter L. Owens | 30 | Head | Loader | Kentucky |
| 25 | Frances Owens | 24 | Wife | — | Kentucky |
| 26 | Earl Greenland | 39 | Head | Tool Maker | Indiana |
| 27 | Grace Greenland | 39 | Wife | — | Indiana |
| 28 | Don Greenland | 17 | Son | — | Indiana |
| 29 | Patricia Greenland | 5 | Daughter | — | Indiana |
| 30 | James Greenland | 0 | Son | — | Indiana |
| 31 | Charles Turner | 41 | Head | Generator Assembler | Indiana |
| 32 | Elizabeth Turner | 35 | Wife | — | Indiana |
| 33 | Betty Turner | 17 | Daughter | — | Indiana |
| 34 | Robert A. Turner | 15 | Son | — | Indiana |
| 35 | Forest M. Baker | 39 | Head | Machine Operator | Illinois |
| 36 | Blanche L. Baker | 33 | Wife | — | Illinois |
| 37 | Edith E. Baker | 13 | Daughter | — | Illinois |
| 38 | Robert E. Baker | 11 | Son | — | Illinois |
| 39 | Charles R. Miller | 32 | Head | Punch Press Operator | Indiana |
| 40 | Zula May Miller | 29 | Wife | Hose Assembler | Indiana |
Pedigree Summary
Robert + 2 siblings
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)