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Robert Graham — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Robert Graham across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Henry & Mary — first a son (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Graham |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Woodruff Place |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Electrician |
| Industry | Electric Utility |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1248 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Electrician |
| Township / Ward | Woodruff Place |
| Est. Birth Year | ~1913 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Margaret Graham | Daughter | — | 25 | ~1915 |
| Henry Graham | Head | — | 63 | ~1877 |
| Robert Graham | Son | — | 27 | ~1913 |
| Mary Graham | Spouse | — | 63 | ~1877 |
Census Appearances
1920
Marion, Indiana
Son, age 6
Marion, Indiana · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 16
Marion, Indiana · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| 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 27
Marion-County, Indiana · implied b. ~1913 — 4 household members
| Surname | Graham |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Woodruff Place |
| 1935 Residence (County) | Marion |
| Occupation | Electrician |
| Industry | Electric Utility |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1248 |
| Highest Grade | C 3 |
| 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 Graham across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Graham (~0.92 confidence) and mother Mary Graham (~0.92 confidence) and mother Minnie Graham (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Graham
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Mary Graham
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Minnie Graham
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Graham
Son · 1940 · age 27 · b. ~1913 · Indiana
★ You are viewing this record
Sibling
Margaret Graham
Sibling · 1940 · age 25
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-t0627-01075-00136)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grace H. Coit | 34 | Wife | — | Wisconsin |
| 2 | Thomas W. Pease | 33 | Head | Manufacturing | Wisconsin |
| 3 | Adeline Pease | 34 | Wife | Durying | Wisconsin |
| 4 | Thomas G. Pease | 8 | Son | — | Missouri |
| 5 | Maude Carlisle | 66 | Head | Investment Dept. | Indiana |
| 6 | Rosa D. Stroup | 59 | Maid | Maid | Indiana |
| 7 | Charles D. Free | 72 | Head | — | Indiana |
| 8 | Alice M. Free | 69 | Wife | — | Indiana |
| 9 | Mary A. Free | 32 | Daughter | Stenographer | Indiana |
| 10 | John M. Schlenk | 44 | Head | Salesman | Ohio |
| 11 | Josephine Schlenk | 41 | Wife | — | Indiana |
| 12 | Mary Ab. Schlenk | 19 | Daughter | — | Indiana |
| 13 | Josephine Schlenk | 16 | Daughter | — | Ohio |
| 14 | John Jr. Schlenk | 4 | Son | — | Indiana |
| 15 | Paul Jordan | 24 | Lodger | — | Indiana |
| 16 | Eva S. Mackey | 46 | Head | — | Indiana |
| 17 | Cornelius Posson | 69 | Head | Auditor | New York |
| 18 | Louise Posson | 53 | Wife | — | Illinois |
| 19 | Dwight W. Posson | 22 | Son | — | Illinois |
| 20 | Emmadore Posson | 19 | Daughter | — | Illinois |
| 21 | L. C. Sitten | 56 | Head | Salesman | Indiana |
| 22 | Lillian Sitten | 54 | Wife | — | Indiana |
| 23 | Lloyd Sitten | 20 | Son | — | Indiana |
| 24 | Leah Harter | 56 | Head | — | Indiana |
| 25 | Eleanor Harter | 20 | Daughter | — | California |
| 26 | Gayle Harter | 54 | Daughter | Librarian | Indiana |
| 27 | Louise Sturdevant | 52 | Head | Teacher | Nebraska |
| 28 | Henry T. Graham | 63 | Head | Minister | Indiana |
| 29 | Mary A. Graham | 63 | Wife | — | Indiana |
| 30 | Robert Graham THIS PERSON | 27 | Son | Electrician | Indiana |
| 31 | Margaret Graham | 25 | Daughter | — | Indiana |
| 32 | George H. Gray | 41 | Head | Order-Filler | Indiana |
| 33 | Julia Gray | 28 | Wife | — | Indiana |
| 34 | Grace Gray | 5 | Daughter | — | Indiana |
| 35 | Arwell Cooper | 26 | Head | Maintenance | Indiana |
| 36 | Helen C. H. Cooper | 26 | Wife | — | Indiana |
| 37 | Walter Walters | 35 | Head | Salesman | Indiana |
| 38 | Helen Walters | 35 | Wife | — | West Virginia |
| 39 | Evelyn Marie Walters | 0 | Daughter | — | Indiana |
| 40 | Jeanette P. Mathews | 52 | Head | Librarian | Ohio |
Related Census Records
Pedigree Summary
Robert + 1 sibling
Gen 1 · 3 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)