RR
Robert Robertson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Robert Robertson across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Robertson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Laborer |
| Industry | Private Contractor |
| Class of Worker | NP |
| Hours Worked | 24 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Martha Robertson | Daughter | — | 10 | ~1930 |
| Ernest Robertson | Son | — | 19 | ~1921 |
| Mary Robertson | Daughter | — | 11 | ~1929 |
| Robert Robertson | Son | — | 17 | ~1923 |
| Jack Robertson | Son | — | 14 | ~1926 |
| Charles Robertson | Son | — | 5 | ~1935 |
| Maude Robertson | Spouse | — | 37 | ~1903 |
| Chester Robertson | Head | — | 43 | ~1897 |
Census Appearances
1930
Marion, Indiana
Son, age 7
Marion, Indiana · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| 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 |
1940
Marion-County, Indiana
Son, age 17
Marion-County, Indiana · implied b. ~1923 — 8 household members
| Surname | Robertson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Laborer |
| Industry | Private Contractor |
| Class of Worker | NP |
| Hours Worked | 24 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 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 Robertson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Robertson
Son · 1940 · age 17 · b. ~1923 · Indiana
★ You are viewing this record
Sibling
Ernest Robertson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Robertson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Robertson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Robertson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Robertson
Sibling · 1940 · age 11
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-t0627-01124-00354)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Vaught | 28 | Son | Laborer | Indiana |
| 2 | Raymond Vaught | 24 | Son | Laborer | Indiana |
| 3 | Marjorie Vaught | 21 | Daughter | — | Indiana |
| 4 | Charles A. Vaught | 20 | Son | New Worker | Indiana |
| 5 | Harriet Vaught | 16 | Daughter | — | Indiana |
| 6 | Ralph Vaught | 12 | Son | — | Indiana |
| 7 | Chester Robertson | 43 | Head | Plasterer | Indiana |
| 8 | Maude E. Robertson | 37 | Wife | — | Indiana |
| 9 | Ernest Robertson | 19 | Son | New Worker | Indiana |
| 10 | Robert Robertson THIS PERSON | 17 | Son | Laborer | Indiana |
| 11 | Jack Robertson | 14 | Son | — | Indiana |
| 12 | Mary Anne Robertson | 11 | Daughter | — | Indiana |
| 13 | Martha Lee Robertson | 10 | Daughter | — | Indiana |
| 14 | Charles W. Robertson | 5 | Son | — | Indiana |
| 15 | Oris King | 38 | Head | Mechanic | Indiana |
| 16 | Georgia D. King | 37 | Wife | — | Indiana |
| 17 | Dorlota King | 14 | Daughter | — | Indiana |
| 18 | Jacqueline King | 4 | Daughter | — | Indiana |
| 19 | Boyd King | 1 | Son | — | Indiana |
| 20 | Lillie G. King | 67 | Mother | — | Indiana |
| 21 | Charles King | 62 | Brother-in-law | Shoe Maker | Indiana |
| 22 | Claude Clark | 62 | Head | Laborer | Indiana |
| 23 | Grace D. Clark | 57 | Wife | — | Indiana |
| 24 | Jean Clark | 15 | Daughter | — | California |
| 25 | Isabelle Clark | 13 | Daughter | — | California |
| 26 | Nancy Barker | 74 | Mother-in-law | — | Indiana |
| 27 | Mary E. Kennert | 43 | Head | Saleslady | Indiana |
| 28 | Lenora Lowe | 17 | Lodger | Saleslady | Indiana |
| 29 | Ernest Brown | 73 | Head | Paper Hanger | Indiana |
| 30 | Sarah D. Brown | 74 | Wife | — | Indiana |
| 31 | Norman R. Mohr | 23 | Head | Laborer | Indiana |
| 32 | Mary Mohr | 24 | Wife | — | Indiana |
| 33 | Ruby D. Eicken | 30 | Head | — | Kentucky |
| 34 | Mildred Eicken | 14 | Daughter | — | Kentucky |
| 35 | William Eicken | 12 | Son | — | Kentucky |
| 36 | Ruth Eicken | 9 | Daughter | — | Kentucky |
| 37 | Morris Eicken | 7 | Son | — | Kentucky |
| 38 | James D. Feeney | 75 | Head | Surgeon | Kentucky |
| 39 | Josephine Feeney | 53 | Wife | — | Indiana |
| 40 | James Hardin | 33 | Head | Estimator | Indiana |
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)