RC
Robert Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Multnomah-County, Oregon
Our Model Tree links this Robert Cooper across the 1930 and 1940 US Censuses in Multnomah-County, Oregon (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 10-person household.
Age 19
b. ~1921
Male
Son
Born: Oregon
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Multnomah-County, Oregon |
| Surname | Cooper |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland City |
| 1935 Residence (County) | Multnomah |
| Additional Details | |
| Occupation | package sealer |
| Industry | biscuit company |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 34 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Occupation | Package Sealer |
| Township / Ward | Portland City |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Hyla Cooper | Daughter | — | 16 | ~1924 |
| Donna Cooper | Daughter | — | 10 | ~1930 |
| Eleanor Cooper | Daughter | — | 14 | ~1926 |
| Shirley Cooper | Daughter | — | 11 | ~1929 |
| Samuel Cooper | Head | — | 51 | ~1889 |
| James Cooper | Son | — | 17 | ~1923 |
| Samuel Cooper | Son | — | 13 | ~1927 |
| David Cooper | Son | — | 9 | ~1931 |
| Robert Cooper | Son | — | 19 | ~1921 |
| Hyla Cooper | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Multnomah, Oregon
Son, age 9
Multnomah, Oregon · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Idaho |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Multnomah-County, Oregon
Son, age 19
Multnomah-County, Oregon · implied b. ~1921 — 10 household members
| Surname | Cooper |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland City |
| 1935 Residence (County) | Multnomah |
| Occupation | package sealer |
| Industry | biscuit company |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 34 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 Cooper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Cooper
Son · 1940 · age 19 · b. ~1921 · Oregon
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Sibling
Shirley Cooper
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Cooper
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cooper
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Cooper
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donna Cooper
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Cooper
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hyla Cooper
Sibling · 1940 · age 16
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 — Multnomah-County, Oregon
Open full size
1940 US Federal Census — Multnomah-County, Oregon
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03394-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Theresa H. Homelsen | 58 | Wife | — | Oregon |
| 42 | Harry Wakefield | 45 | Head | Engineer | Oregon |
| 43 | Harriett Wakefield | 45 | Wife | — | Wisconsin |
| 44 | Edward Wakefield | 22 | Son | Shipping Clerk | Oregon |
| 45 | James Wakefield | 15 | Son | — | Oregon |
| 46 | Floyd Hold | 42 | Head | Carpenter | Michigan |
| 47 | Alice Hold | 41 | Wife | — | Oregon |
| 48 | Dorothy Hold | 18 | Daughter | New Worker | Oregon |
| 49 | William Taylor | 40 | Head | Welder | Minnesota |
| 50 | Marian Taylor | 34 | Wife | — | Oregon |
| 51 | Marion Taylor | 13 | Daughter | — | Oregon |
| 52 | Billy Taylor | 3 | Son | — | Oregon |
| 54 | Thomas A. Warner | 51 | Head | Night Watchman | England |
| 55 | Olive P. Warner | 50 | Wife | — | England |
| 56 | Harold Bleything | 34 | Head | Market Manager | Oregon |
| 57 | Laura Bleything | 29 | Wife | — | Colorado |
| 58 | Patricia Bleything | 9 | Daughter | — | Oregon |
| 59 | Harold Bleything | 7 | Son | — | Oregon |
| 60 | Robert Bleything | 1 | Son | — | Oregon |
| 61 | Joseph Bettger | 34 | Head | Store Service Man | Russia |
| 62 | Lydia Bettger | 33 | Wife | — | Russia |
| 63 | Barbara Bettger | 11 | Daughter | — | Oregon |
| 64 | Lawrence Bettger | 10 | Son | — | Oregon |
| 65 | Samuel Cooper | 51 | Head | — | Ohio |
| 66 | Hyla Cooper | 44 | Wife | Office Worker | Idaho |
| 67 | Robert Cooper THIS PERSON | 19 | Son | Package Sealer | Oregon |
| 68 | James Cooper | 17 | Son | — | Oregon |
| 69 | Hyla Patricia Cooper | 16 | Daughter | — | Oregon |
| 70 | Eleanor Cooper | 14 | Daughter | — | Oregon |
| 71 | Samuel Jr. Cooper | 13 | Son | — | Oregon |
| 72 | Shirley Cooper | 11 | Daughter | — | Oregon |
| 73 | Donna Cooper | 10 | Daughter | — | Oregon |
| 74 | David Cooper | 9 | Son | — | Oregon |
| 76 | Claude Bennett | 36 | Head | Salesman | Wisconsin |
| 77 | Alma Bennett | 34 | Wife | — | Oregon |
| 78 | Bert Ackley | 41 | Head | Shingle Contractor | Oregon |
| 79 | Elva Ackley | 38 | Wife | — | South Dakota |
| 80 | Richard Ackley | 13 | Son | — | Oregon |
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)