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Robert Gray — 1940 US Census Record
Model Tree available1940 United States Federal Census · Columbia-County, Oregon
Our Model Tree links this Robert Gray across the 1920, 1930 and 1940 US Censuses in Columbia-County, Oregon (XGBoost, ~Confirmed), with identified parents David & Florence — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Oregon
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbia-County, Oregon |
| Surname | Gray |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | St. Helens |
| 1935 Residence (County) | Columbia |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | St Helens |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| David Gray | Head | — | 58 | ~1882 |
| Robert Gray | Son | — | 22 | ~1918 |
| Wm Gray | Son | — | 25 | ~1915 |
| Alvin Gray | Son | — | 19 | ~1921 |
| Florence Gray | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Columbia, Oregon
Son, age 2
Columbia, Oregon · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Nebraska |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Columbia, Oregon
Son, age 12
Columbia, Oregon · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Columbia-County, Oregon
Son, age 22
Columbia-County, Oregon · implied b. ~1918 — 5 household members
| Surname | Gray |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | St. Helens |
| 1935 Residence (County) | Columbia |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 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 Gray across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Gray (~0.92 confidence) and mother Florence Gray (~0.92 confidence) and father Von Gray (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Gray
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Florence Gray
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Von Gray
b. ~1888
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Gray
Son · 1940 · age 22 · b. ~1918 · Oregon
★ You are viewing this record
Sibling
Alvin Gray
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wm Gray
Sibling · 1940 · age 25
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 — Columbia-County, Oregon
Open full size
1940 US Federal Census — Columbia-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03357-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | La Verne S. Ziolkowski | 20 | Daughter | Stenographer | Oregon |
| 2 | Orville H. Ziolkowski | 18 | Son | Janitor | Oregon |
| 3 | Shirley S. Ziolkowski | 6 | Daughter | — | Oregon |
| 4 | Orville L. Baker | 30 | Head | Salesman | Michigan |
| 5 | Grace L. Baker | 26 | Wife | — | Oregon |
| 6 | Antoinette Baker | 5 | Daughter | — | Washington |
| 7 | Larry E. Baker | 2 | Son | — | Oregon |
| 8 | Edison J. Ballagh | 59 | Head | Agent | Missouri |
| 9 | G. Liona Ballagh | 50 | Wife | — | Missouri |
| 10 | Cynthia E. Wilkins | 72 | Mother-in-law | — | California |
| 11 | David S. Gray | 58 | Head | Proprietor | Nebraska |
| 12 | Florence H. Gray | 52 | Wife | — | Nebraska |
| 13 | Wm. S. Gray | 25 | Son | Icecreamman | Oregon |
| 14 | Robert J. Gray THIS PERSON | 22 | Son | — | Oregon |
| 15 | Alvin J. Gray | 19 | Son | 300 | Oregon |
| 16 | William A. Rysock | 47 | Head | Boom Foreman | Poland |
| 17 | Hazel C. Rysock | 40 | Wife | — | Kansas |
| 18 | Virginia M. Rysock | 16 | Daughter | — | Oregon |
| 19 | Walter H. Pidmer | 22 | Head | Back Tender | Oregon |
| 20 | Lola M. Pidmer | 20 | Wife | 160 | Oregon |
| 21 | John S. Holman | 30 | Head | Pharmacist | Minnesota |
| 22 | Helen M. Holman | 28 | Wife | Saleslady | North Dakota |
| 23 | John H. Mcallister | 50 | Head | Longshoreman | Missouri |
| 24 | Ada L. Mcallister | 55 | Wife | — | Pennsylvania |
| 25 | Melvin L. Mcallister | 19 | Son | — | Oregon |
| 26 | Donna M. Lattin | 8 | Granddaughter | — | Oregon |
| 27 | Dolores D. Lattin | 8 | Granddaughter | — | Oregon |
| 28 | Maude E. Lund | 44 | Head | Nurse | Oklahoma |
| 29 | Iris I. Lund | 21 | Daughter | Folder Sorter | South Dakota |
| 30 | Audrey M. Lund | 18 | Daughter | — | Iowa |
| 31 | Bonnie L. Lund | 16 | Daughter | 70 | California |
| 32 | Phyllis J. Lund | 13 | Daughter | — | California |
| 33 | Vernon D. Lund | 10 | Son | — | California |
| 34 | — | None | — | — | — |
| 35 | Anna S. Martin | 50 | Head | Nurse | Oregon |
| 36 | Ralph H. Hunt | 61 | Head | Watchman | Illinois |
| 37 | Rose E. Hunt | 50 | Wife | — | Washington |
| 38 | Zoella M. Hunt | 26 | Daughter | Lineman Helper | Washington |
| 39 | Paul E. Neff | 36 | Head | Dogger | Oregon |
| 40 | Florence A. Neff | 23 | Wife | Lineman Feeder | Washington |
Pedigree Summary
Robert + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)