RH
Robert Hayes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Robert Hayes across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Hayes |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Joan Hayes | Daughter | — | 4 | ~1936 |
| Geraldine Hayes | Daughter | — | 2 | ~1938 |
| Emma Hayes | Daughter | — | ~1940 | |
| John Hayes | Head | — | 39 | ~1901 |
| Harold Hayes | Son | — | 14 | ~1926 |
| John Hayes | Son | — | 16 | ~1924 |
| Donald Hayes | Son | — | 12 | ~1928 |
| Robert Hayes | Son | — | 13 | ~1927 |
| Howard Hayes | Son | — | 6 | ~1934 |
| Eugene Hayes | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Marion, Indiana
Son, age 3
Marion, Indiana · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Robert F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Kentucky |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 13
Marion-County, Indiana · implied b. ~1927 — 10 household members
| Surname | Hayes |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Hayes across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Hayes
Son · 1940 · age 13 · b. ~1927 · Indiana
★ You are viewing this record
Sibling
Harold Hayes
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Hayes
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Hayes
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Hayes
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Hayes
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hayes
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Hayes
Sibling · 1940 · age 6
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-t0627-01124-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucile Banks | 22 | Daughter | Sewing | Tennessee |
| 42 | Robert Banks | 25 | Son-in-law | Porter | Tennessee |
| 43 | Edna L. Henderson | 42 | Head | — | Kentucky |
| 44 | Evelyn M. Henderson | 21 | Daughter | — | Indiana |
| 45 | Leona R. Henderson | 19 | Daughter | Maid | Indiana |
| 46 | Lucille M. Henderson | 15 | Daughter | — | Indiana |
| 47 | James E. Henderson | 17 | Son | — | Indiana |
| 48 | Lilly M. Woods | 62 | Mother | Maid | Kentucky |
| 49 | Cora Miles | 17 | Niece | Maid | Indiana |
| 50 | Roscoe Derrickson | 46 | Head | — | Kentucky |
| 51 | Minnie Derrickson | 45 | Wife | Sewing | Kentucky |
| 52 | Dorothy Derrickson | 14 | Daughter | — | Kentucky |
| 53 | Herbert Derrickson | 13 | Son | — | Kentucky |
| 54 | Grace M. Taylor | 28 | Head | — | Tennessee |
| 55 | William Jr. Taylor | 11 | Son | — | Indiana |
| 56 | Albert H. Taylor | 10 | Son | — | Indiana |
| 57 | Virginia M. Taylor | 9 | Daughter | — | Indiana |
| 58 | Geneva I. Taylor | 8 | Daughter | — | Indiana |
| 59 | Sara Mcbride | 37 | Head | Sewing | Mississippi |
| 60 | Decata Mcbride | 19 | Daughter | — | Arkansas |
| 61 | Thomas Mccreary | 38 | Lodger | — | Kentucky |
| 62 | John Chew | 74 | Head | Laborer | Texas |
| 63 | Captora C. Chew | 50 | Wife | — | Kentucky |
| 64 | George M. Bridwell | 22 | Foster Son | Janitor | Indiana |
| 65 | Clarence Bridwell | 17 | Foster Son | — | Indiana |
| 66 | John E. Hayes | 39 | Head | Maintenance Man | Kentucky |
| 67 | Eugene M. Hayes | 35 | Wife | — | Kentucky |
| 68 | John E. Jr. Hayes | 16 | Son | — | Indiana |
| 69 | Harold C. Hayes | 14 | Son | — | Indiana |
| 70 | Robert F. Hayes THIS PERSON | 13 | Son | — | Indiana |
| 71 | Donald L. Hayes | 12 | Son | — | Indiana |
| 72 | Howard J. Hayes | 6 | Son | — | Indiana |
| 73 | Joan R. Hayes | 4 | Daughter | — | Indiana |
| 74 | Geraldine Hayes | 2 | Daughter | — | Indiana |
| 75 | Emma J. Hayes | 0 | Daughter | — | Indiana |
| 76 | Clifford Russ | 25 | Head | Janitor | Indiana |
| 77 | Idy M. Russ | 26 | Wife | — | Tennessee |
| 78 | June C. Russ | 6 | Daughter | — | Indiana |
| 79 | Arthur J. Davidson | 54 | Father-in-law | — | Tennessee |
| 80 | Elizabeth Davidson | 52 | Mother-in-law | — | Tennessee |
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)