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Robert Bradley — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grant-County, Oklahoma
Our Model Tree links this Robert Bradley across the 1930 and 1940 US Censuses in Grant-County, Oklahoma (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 11-person household.
Age 19
b. ~1921
Male
Son
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, Oklahoma |
| Surname | Bradley |
| Given Name | Robert O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Valley Township |
| 1935 Residence (County) | Grant |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farmer |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 25 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Farmer |
| Township / Ward | Valley Township |
| Est. Birth Year | ~1921 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Bradley | Daughter | — | 13 | ~1927 |
| Viola Bradley | Spouse | — | 20 | ~1920 |
| Ralph Bradley | Son | — | 24 | ~1916 |
| Dale Bradley | Son | — | 15 | ~1925 |
| Mrs Bradley | Head | — | 42 | ~1898 |
| Clifford Bradley | Son | — | 20 | ~1920 |
| John Bradley | Daughter | — | 9 | ~1931 |
| Grace Bradley | Daughter | — | 10 | ~1930 |
| Nellie Bradley | Daughter | — | 17 | ~1923 |
| Betty Bradley | Daughter | — | 18 | ~1922 |
| Robert Bradley | Son | — | 19 | ~1921 |
Census Appearances
1930
Grant, Oklahoma
Son, age 10
Grant, Oklahoma · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Robert O |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Oklahoma |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Grant-County, Oklahoma
Son, age 19
Grant-County, Oklahoma · implied b. ~1921 — 11 household members
| Surname | Bradley |
| Given Name | Robert O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Valley Township |
| 1935 Residence (County) | Grant |
| Occupation | Farmer |
| Industry | Farmer |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 25 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Bradley across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Bradley
Son · 1940 · age 19 · b. ~1921 · Oklahoma
★ You are viewing this record
Sibling
Mary Bradley
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Bradley
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Bradley
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Bradley
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Bradley
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Bradley
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Bradley
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clifford Bradley
Sibling · 1940 · age 20
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 — Grant-County, Oklahoma
Open full size
1940 US Federal Census — Grant-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03296-00374)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lee Boyer | 57 | Head | Farmer | Indiana |
| 42 | Della L. Boyer | 53 | Wife | — | Kansas |
| 43 | Mark Lynch | 69 | Head | Farmer | Indiana |
| 44 | Ethel Lynch | 56 | Wife | — | Oklahoma |
| 45 | James A. Isaacs | 51 | Head | Farmer | Oklahoma |
| 46 | Mildred M. Isaacs | 39 | Wife | — | Oklahoma |
| 47 | Mary Ann Isaacs | 4 | Daughter | — | Oklahoma |
| 48 | Mildred Mckeegan | 42 | Sister | — | Iowa |
| 49 | V. Delano | 48 | Head | Farmer | Kansas |
| 50 | Mrs. V. T. Bradley | 42 | Head | Farmer | Oklahoma |
| 51 | Ralph Bradley | 24 | Son | Farmer | Texas |
| 52 | Viola E. Bradley | 20 | Wife | — | Oklahoma |
| 53 | Clifford Bradley | 20 | Son | Farmer | Oklahoma |
| 54 | Robert O. Bradley THIS PERSON | 19 | Son | Farmer | Oklahoma |
| 55 | Betty J. Bradley | 18 | Daughter | — | Oklahoma |
| 56 | Nellie M. Bradley | 17 | Daughter | — | Oklahoma |
| 57 | Dale H. Bradley | 15 | Son | — | Oklahoma |
| 58 | Mary M. Bradley | 13 | Daughter | — | Oklahoma |
| 59 | Grace E. Bradley | 10 | Daughter | — | Oklahoma |
| 60 | John A. Bradley | 9 | Daughter | — | Oklahoma |
| 61 | Earl M. Waldie | 43 | Head | Farmer | Kansas |
| 62 | Harold H. Green | 50 | Head | Farmer | Indiana |
| 63 | Pearl O. Green | 52 | Wife | — | Pennsylvania |
| 64 | Gwendoline N. Green | 21 | Daughter | Teacher | Oklahoma |
| 65 | Kenneth W. Green | 17 | Son | — | Oklahoma |
| 66 | Carol F. Green | 14 | Daughter | — | Oklahoma |
| 67 | Clint G. Haws | 31 | Head | Farmer | Oklahoma |
| 68 | Ada Mae Haws | 28 | Wife | — | Oklahoma |
| 69 | Eugene C. Haws | 10 | Son | — | Oklahoma |
| 70 | Norma A. Haws | 7 | Daughter | — | Oklahoma |
| 71 | Frank F. Regehr | 43 | Head | Farmer | Nebraska |
| 72 | Mary J. Regehr | 43 | Wife | — | Nebraska |
| 73 | Gerhard F. Regehr | 17 | Son | — | Nebraska |
| 74 | Erma Rose Regehr | 15 | Daughter | — | Nebraska |
| 75 | Ernest F. Regehr | 14 | Son | — | Nebraska |
| 76 | Mary Ann Regehr | 11 | Daughter | — | Oklahoma |
| 77 | Marjorie M. Regehr | 6 | Daughter | — | Oklahoma |
| 78 | Charley M. Pitcher | 63 | Head | Farmer | Kansas |
| 79 | Pearl Pitcher | 56 | Wife | — | Kansas |
| 80 | Clayton T. Reed | 69 | Head | Farmer | 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)