RC
Robert Cochran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Oregon
Our Model Tree links this Robert Cochran across the 1930 and 1940 US Censuses in Washington-County, Oregon (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Oregon |
| Surname | Cochran |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Election Precinct 2 |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 63 |
| Income (1939) | 345 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Mechanic |
| Township / Ward | Election Precinct 2 |
| Est. Birth Year | ~1918 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Cochran | Son | — | 22 | ~1918 |
| Vernon Cochran | Head | — | 52 | ~1888 |
| Willen Cochran | Son | — | 11 | ~1929 |
| Betty Cochran | Daughter | — | 14 | ~1926 |
| Jack Cochran | Son | — | 16 | ~1924 |
| Clara Cochran | Spouse | — | 50 | ~1890 |
| C Cochran | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Washington, Oregon
Son, age 12
Washington, Oregon · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Oregon |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Washington-County, Oregon
Son, age 22
Washington-County, Oregon · implied b. ~1918 — 7 household members
| Surname | Cochran |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Election Precinct 2 |
| 1935 Residence (County) | Washington |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 63 |
| Income (1939) | 345 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Cochran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Cochran
Son · 1940 · age 22 · b. ~1918 · Oregon
★ You are viewing this record
Sibling
Willen Cochran
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Cochran
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Cochran
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
C Cochran
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 — Washington-County, Oregon
Open full size
1940 US Federal Census — Washington-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03382-00036)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie E. Parks | 16 | Daughter | — | Oregon |
| 42 | Elizabeth B. Wright | 55 | Head | — | New York |
| 43 | Mary E. Hayes | 73 | Sister | — | Nebraska |
| 44 | Louis G. Johnson | 65 | Head | Farmer | Michigan |
| 45 | Dora M. Johnson | 68 | Wife | — | Michigan |
| 46 | Lyman W. Murdock | 40 | Head | Hand Labor | Oregon |
| 47 | Marion G. Murdock | 37 | Wife | — | Oregon |
| 48 | Annabel Murdock | 14 | Daughter | — | Oregon |
| 49 | Lyman W. Murdock | 12 | Son | — | Oregon |
| 50 | Beverly J. Murdock | 9 | Daughter | — | Oregon |
| 51 | Carl R. Murdock | 7 | Son | — | Oregon |
| 52 | John Knaip | 35 | Head | — | Switzerland |
| 53 | Frank Rersch | 36 | Head | Farmer | Oklahoma |
| 54 | John Rersch | 56 | Head | Farmer | Kansas |
| 55 | Grace Rersch | 55 | Wife | — | Kansas |
| 56 | Alfred Rersch | 20 | Son | — | Kansas |
| 57 | Olive E. Rersch | 16 | Son | — | Kansas |
| 58 | Vernon Cochran | 52 | Head | Farmer | Oregon |
| 59 | Clara M. Cochran | 50 | Wife | — | Illinois |
| 60 | Robert Cochran THIS PERSON | 22 | Son | Mechanic | Washington |
| 61 | Jack G. Cochran | 16 | Son | — | Washington |
| 62 | Betty B. Cochran | 14 | Daughter | — | Oregon |
| 63 | Willen G. Cochran | 11 | Son | — | Oregon |
| 64 | C. Joyce Cochran | 6 | Daughter | — | Oregon |
| 65 | Archie Campbell | 79 | Head | Farmer | Canada-Eng |
| 66 | Eva C. Knight | 46 | Daughter | — | Oregon |
| 67 | Ralph E. Knight | 46 | Son-in-law | Retail Salesman | North Dakota |
| 68 | Glen C. Knight | 17 | Grandson | — | Connecticut |
| 69 | Ritchie Knight | 14 | Grandson | — | Connecticut |
| 70 | Joseph G. Brown | 41 | Head | Farmer | Illinois |
| 71 | George O. Johnson | 73 | Boarder | — | Norway |
| 72 | Ella B. Gardner | 68 | Housekeeper | House Keeper | Indiana |
| 73 | Byron W. Stearns | 32 | Head | Proprietor | Oregon |
| 74 | Violet B. Stearns | 30 | Wife | — | Oregon |
| 75 | Dolores J. Stearns | 8 | Daughter | — | Oregon |
| 76 | Keith L. Stearns | 6 | Son | — | Oregon |
| 77 | John R. Mcvorce | 24 | Head | — | Oregon |
| 78 | Chotaro Matsumura | 64 | Head | Farmer | Japan |
| 79 | Kame Matsumura | 57 | Wife | — | Japan |
| 80 | Albert T. Matsumura | 36 | Son | Farm Hand | Japan |
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)