RS
Robert Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Robert Smith across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Elvin & Elvin — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Smith |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Porter |
| Industry | State House |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 750 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Porter |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Jane Smith | Daughter | — | 18 | ~1922 |
| Mayette Smith | Daughter | — | 24 | ~1916 |
| Elvin Smith | Head | — | 51 | ~1889 |
| Robert Smith | Son | — | 25 | ~1915 |
| Lena Smith | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Marion, Indiana
Son, age 5
Marion, Indiana · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kentucky |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 16
Marion, Indiana · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| 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
Marion-County, Indiana
Son, age 25
Marion-County, Indiana · implied b. ~1915 — 5 household members
| Surname | Smith |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Porter |
| Industry | State House |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 750 |
| Highest Grade | No 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 Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elvin Smith (~0.92 confidence) and father Elvin Smith (~0.92 confidence) and mother Lidra Smith (~0.92 confidence) and mother Lena Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elvin Smith
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Elvin Smith
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Lidra Smith
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Lena Smith
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Smith
Son · 1940 · age 25 · b. ~1915 · Indiana
★ You are viewing this record
Sibling
Mayette Smith
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Smith
Sibling · 1940 · age 18
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01127-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alec Stephens | 18 | son | New Worker | Indiana |
| 2 | Richard Bronaugh | 45 | Lodger | — | Kentucky |
| 3 | Chester Alexander | 50 | Lodger | Moulder | Kentucky |
| 4 | Rola Alexander | 36 | Lodger | — | Kentucky |
| 5 | Arthur Alexander | 6 | Lodger | — | Indiana |
| 6 | Frazier Patterson | 35 | Head | Labor | Tennessee |
| 7 | Julia Patterson | 29 | Wife | — | Tennessee |
| 8 | William Netter | 57 | Head | Labor | Tennessee |
| 9 | Ettie Netter | 44 | Wife | — | Tennessee |
| 10 | Esley Netter | 27 | son | — | Illinois |
| 11 | Carl Netter | 25 | son | — | Illinois |
| 12 | Mary Netter | 19 | daughter | Maid | Indiana |
| 13 | Sylvester Netter | 17 | son | New Worker | Indiana |
| 14 | Gertrude Netter | 14 | daughter | — | Indiana |
| 15 | Hyman Blezner | 54 | Head | Grocery Retail | Russia |
| 16 | Bessie Blezner | 53 | Wife | — | Russia |
| 17 | Josie Higgins | 72 | Head | — | N. Carolina |
| 18 | Willie Belle Notenation | 19 | Head | — | Georgia |
| 19 | William Notenation | 2 | son | — | Indiana |
| 20 | Geraldine Notenation | 1 | daughter | — | Indiana |
| 21 | Mattie Huges | 69 | Lodger | — | Indiana |
| 22 | Elvin Smith | 51 | Head | Moulder | Indiana |
| 23 | Lena Smith | 50 | Wife | — | Kentucky |
| 24 | Robert Smith THIS PERSON | 25 | son | Porter | Indiana |
| 25 | Mayette Smith | 24 | daughter | Typist | Indiana |
| 26 | Jane Smith | 18 | daughter | — | Indiana |
| 27 | Luke Jones | 44 | Head | Butcher | Missouri |
| 28 | Lela Jones | 37 | Wife | — | Mississippi |
| 29 | Gladys Jones | 16 | daughter | — | Indiana |
| 30 | Luke Jr. Jones | 15 | son | — | Indiana |
| 31 | James Jones | 39 | Head | Moulder | Mississippi |
| 32 | Mattie Jones | 36 | Wife | — | Kentucky |
| 33 | James Jr. Jones | 17 | son | New Worker | Indiana |
| 34 | Earnestine Jones | 15 | daughter | — | Indiana |
| 35 | Emma Wafford | 54 | Head | Fineman | Kentucky |
| 36 | Evelyn Wafford | 37 | Wife | — | Tennessee |
| 37 | Mitchell Elois Wafford | 14 | daughter | — | Indiana |
| 38 | Kastrodina Clunie | 39 | Head | — | Indiana |
| 39 | Alice Clunie | 10 | daughter | — | N. Carolina |
| 40 | Alexander Clunie | 8 | son | — | N. Carolina |
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)