RG
Robert Griffith — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Multnomah, Oregon
Our Model Tree links this Robert Griffith across the 1930 and 1940 US Censuses in Multnomah, Oregon (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 8-person household.
Age 15
b. ~1915
Male
Son
Born: Oregon
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Multnomah, Oregon |
| Surname | Griffith |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Wales |
| Mother's Birthplace | England |
| Additional Details | |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Portland City |
| Est. Birth Year | ~1915 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Paul Griffith | Son | — | 22 | ~1908 |
| Margaret Griffith | Daughter | — | 23 | ~1907 |
| Berthold Griffith | Son | — | 19 | ~1911 |
| Donald Griffith | Son | — | 16 | ~1914 |
| Amy Griffith | Spouse | — | 55 | ~1875 |
| John Griffith | Son | — | 10 | ~1920 |
| Owen Griffith | Head | — | 52 | ~1878 |
| Robert Griffith | Son | — | 15 | ~1915 |
Census Appearances
1930
Multnomah, Oregon
Son, age 15
Multnomah, Oregon · implied b. ~1915 — 8 household members
| Surname | Griffith |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Wales |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Multnomah-County, Oregon
Head, age 25
Multnomah-County, Oregon · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffiths |
| Given Name | Robert L. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Occupation | patcher |
| Industry | plywood mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1488 |
| Highest Grade | H 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 Griffith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Griffith
Son · 1930 · age 15 · b. ~1915 · Oregon
★ You are viewing this record
Sibling
Donald Griffith
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Griffith
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Griffith
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Berthold Griffith
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Griffith
Sibling · 1930 · age 22
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
1930 US Federal Census — Multnomah, Oregon
Open full size
1930 US Federal Census — Multnomah, Oregon
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1951unit:0855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Charles F. Smith | 20 | Boarder | Bill Boy | Colorado |
| 52 | Marie A. Rockwell | 55 | Head | Religious | Germany |
| 53 | Marjory A. Grant | 23 | Cousin | — | Washington |
| 54 | Annie L. Godfrey | 45 | Boarder | Sales Clerk | Wisconsin |
| 55 | Annie L. White | 47 | Roomer | Secretary | England |
| 56 | Albert W. Liefert | 61 | Head | Merchant | Illinois |
| 57 | Elizabeth H. Liefert | 45 | Wife | — | Hungary Budapest |
| 58 | Elizabeth Haydu | 70 | Mother-in-law | — | Hungary Budapest |
| 59 | Nettie R. Beach | 50 | Head | — | Iowa |
| 60 | Beatrice J. Beach | 21 | Daughter | Stenographer | Washington |
| 61 | Joseph H. Spann | 44 | Head | Inspector | Wisconsin |
| 62 | Minnie L. Spann | 46 | Wife | — | Michigan |
| 63 | James W. Davis | 54 | Head | Cook | Massachusetts |
| 64 | Gertrude L. Davis | 43 | Wife | Finisher | N. Dakota |
| 65 | Robert L. Davis | 20 | Stepson | Wood Cutter | Nebraska |
| 66 | Loraine E. Davis | 18 | Stepdaughter | Servant | Oregon |
| 67 | Dorothea E. Busby | 57 | Head | — | Scotland |
| 68 | Hazel M. Busby | 37 | Daughter | Melody | Oregon |
| 69 | Donald X. Busby | 29 | Son | Mechanic | Oregon |
| 70 | Jack I. Busby | 20 | Son | Transmitter | Oregon |
| 71 | Alfred M. Maclean | 35 | Head | Dentist | Canada English |
| 72 | Lillian F. Maclean | 35 | Wife | — | Oregon |
| 73 | Earl G. Stewart | 48 | Head | Plumber | Oregon |
| 74 | Cecil M. Stewart | 41 | Wife | — | Nebraska |
| 75 | Lovelie M. Stewart | 20 | Daughter | — | Idaho |
| 76 | Kathryn L. Stewart | 18 | Daughter | — | Washington |
| 77 | Harold W. Stewart | 16 | Son | — | Oregon |
| 78 | Paul P. Stewart | 14 | Son | — | Oregon |
| 79 | Wynne P. Stewart | 9 | Son | — | Oregon |
| 80 | Isaac F. Wood | 38 | Head | — | Missouri |
| 81 | Hilda E. Wood | 31 | Wife | — | Oregon |
| 82 | Flora M. Wood | 9 | Daughter | — | Oregon |
| 83 | Charles N. Wood | 8 | Son | — | Oregon |
| 84 | Grace L. Wood | 6 | Daughter | — | Oregon |
| 85 | Virginia M. Wood | 5 | Daughter | — | Oregon |
| 86 | Lawrence F. Wood | 3 | Son | — | Oregon |
| 87 | Theresa Wood | 2 | Daughter | — | Oregon |
| 88 | Charles W. Dennis | 52 | Head | Car Repairer | Virginia |
| 89 | Agnes J. Dennis | 52 | Wife | — | Kansas |
| 90 | Ruby J. Dennis | 17 | Daughter | — | Virginia |
| 91 | Donald J. Dennis | 14 | Son | — | S. Dakota |
| 92 | Owen C. Griffith | 52 | Head | Bookkeeper | Wales |
| 93 | Amy M. Griffith | 55 | Wife | — | England |
| 94 | Margaret Q. Griffith | 23 | Daughter | Stenographer | Oregon |
| 95 | Paul L. Griffith | 22 | Son | Driver | Oregon |
| 96 | Berthold L. Griffith | 19 | Son | Banjoist | Oregon |
| 97 | Donald G. Griffith | 16 | Son | — | Oregon |
| 98 | Robert L. Griffith THIS PERSON | 15 | Son | — | Oregon |
| 99 | John L. Griffith | 10 | Son | — | Oregon |
| 100 | Lucretius L. Smith | 48 | Head | Agent | Missouri |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)