RA
Robert Arnold — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grant-County, Oklahoma
Our Model Tree links this Robert Arnold across the 1930 and 1940 US Censuses in Grant-County, Oklahoma (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Male
Son
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, Oklahoma |
| Surname | Arnold |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Ware Township |
| 1935 Residence (County) | Grant |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Ware Township |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Jennie Arnold | Spouse | — | 48 | ~1892 |
| Robert Arnold | Son | — | 16 | ~1924 |
| Virgil Arnold | Son | — | 19 | ~1921 |
| Raymond Arnold | Son | — | 25 | ~1915 |
| Bertha Arnold | Daughter | — | 11 | ~1929 |
| W Arnold | Head | — | 54 | ~1886 |
| Myrtle Arnold | Daughter | — | 26 | ~1914 |
| Glen Arnold | Son | — | 14 | ~1926 |
| Leona Arnold | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Grant, Oklahoma
Son, age 6
Grant, Oklahoma · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Grant-County, Oklahoma
Son, age 16
Grant-County, Oklahoma · implied b. ~1924 — 9 household members
| Surname | Arnold |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Ware Township |
| 1935 Residence (County) | Grant |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| 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 Arnold across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Arnold
Son · 1940 · age 16 · b. ~1924 · Oklahoma
★ You are viewing this record
Sibling
Virgil Arnold
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myrtle Arnold
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glen Arnold
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Arnold
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Arnold
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leona Arnold
Sibling · 1940 · age 21
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-t0627-03296-00412)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M. M. Ragan | 67 | Mother | — | Indiana |
| 2 | Merle Philbrick | 38 | Head | Farmer | Oklahoma |
| 3 | Bernice Philbrick | 27 | Wife | — | Oklahoma |
| 4 | Cleo Philbrick | 9 | Son | — | Oklahoma |
| 5 | Darla Philbrick | 2 | Daughter | — | Oklahoma |
| 6 | George Hart | 69 | Father-in-law | — | New York |
| 7 | Earl Derrick | 37 | Head | Farmer | Oklahoma |
| 8 | Ione Derrick | 37 | Wife | — | Kansas |
| 9 | Leavy Derrick | 16 | Son | — | Kansas |
| 10 | Lester Derrick | 14 | Son | — | Kansas |
| 11 | Ben Shields | 54 | Head | Farmer | Iowa |
| 12 | Flora Shields | 51 | Wife | — | Kansas |
| 13 | Mamie Shields | 79 | Mother-in-law | — | Indiana |
| 14 | W. A. Ayers | 65 | Head | Farmer | Kansas |
| 15 | Gertrude Ayers | 65 | Wife | — | New York |
| 16 | Eugene Ayers | 33 | Son | Farmer | Oklahoma |
| 17 | Gilbert Ayers | 24 | Son | Farmer | Oklahoma |
| 18 | Fred Smith | 40 | Head | Farmer | Oklahoma |
| 19 | Margaret Smith | 67 | Mother | — | Illinois |
| 20 | Emma Wood | 67 | Head | — | Illinois |
| 21 | Ethel Wood | 46 | Daughter | — | Kansas |
| 22 | Louis Reynolds | 63 | Head | — | Kansas |
| 23 | W. H. Arnold | 54 | Head | Farmer | Kansas |
| 24 | Jennie Arnold | 48 | Wife | — | Kansas |
| 25 | Raymond Arnold | 25 | Son | Farm Laborer | Oklahoma |
| 26 | Myrtle Arnold | 26 | Daughter | Housekeeper | Oklahoma |
| 27 | Leona Arnold | 21 | Daughter | Housekeeper | Oklahoma |
| 28 | Virgil Arnold | 19 | Son | — | Oklahoma |
| 29 | Robert Arnold THIS PERSON | 16 | Son | — | Oklahoma |
| 30 | Glen Arnold | 14 | Son | — | Oklahoma |
| 31 | Bertha Arnold | 11 | Daughter | — | Oklahoma |
| 32 | Thomas Riley | 48 | Head | Farmer | Kansas |
| 33 | Bessie Riley | 35 | Wife | — | Oklahoma |
| 34 | Thomas Riley | 16 | Son | — | Oklahoma |
| 35 | Carl Riley | 14 | Son | — | Oklahoma |
| 36 | Dwayne Riley | 12 | Son | — | Oklahoma |
| 37 | Patricia Riley | 8 | Daughter | — | Oklahoma |
| 38 | Will Ponder | 36 | Head | Minister | Texas |
| 39 | Ira W. Ponder | 28 | Wife | — | Texas |
| 40 | Lou Vee Ponder | 6 | Daughter | — | Texas |
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)