RC
Ruth Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Ruth Campbell across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Alexander & Caroline — first a daughter (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Female
Daughter
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Campbell |
| Given Name | Ruth E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Furniture Mfg. |
| Class of Worker | PW |
| Hours Worked | 27 |
| Income (1939) | 360 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Stenographer |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Campbell | Daughter | — | 27 | ~1913 |
| Alexander Campbell | Head | — | 75 | ~1865 |
| Alexander Campbell | Son | — | 25 | ~1915 |
| Caroline Campbell | Spouse | — | 67 | ~1873 |
Census Appearances
1920
King, Washington
Daughter, age 8
King, Washington · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Ruth E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Daughter, age 18
King, Washington · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Ruth E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Daughter, age 27
King-County, Washington · implied b. ~1913 — 4 household members
| Surname | Campbell |
| Given Name | Ruth E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Stenographer |
| Industry | Furniture Mfg. |
| Class of Worker | PW |
| Hours Worked | 27 |
| Income (1939) | 360 |
| Highest Grade | C 2 |
| 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 Ruth Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alexander Campbell (~0.92 confidence) and mother Caroline Campbell (~0.92 confidence) and mother Caroline Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alexander Campbell
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Caroline Campbell
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Caroline Campbell
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Campbell
Daughter · 1940 · age 27 · b. ~1913 · Washington
★ You are viewing this record
Sibling
Alexander Campbell
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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04378-00169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Argue | 55 | head | Dentist | North Dakota |
| 42 | Elizabeth Argue | 50 | wife | — | Minnesota |
| 43 | Jean Argue | 25 | daughter | Owner | Minnesota |
| 44 | Andrew Sundholm | 23 | boarder | Housekeeper | Washington |
| 45 | William L. Rhodes | 73 | head | President | Wisconsin |
| 46 | Claudia A. Rhodes | 68 | wife | — | Wisconsin |
| 47 | Lyyli Ranta | 45 | maid | Housekeeper | Finland |
| 48 | Louis Chatani | 50 | cook | Cook | Japan |
| 49 | David E. Pollock | 31 | head | Auditor | Washington |
| 50 | Phyllis Pollock | 24 | wife | — | Washington |
| 51 | Paul C. Quimby | 46 | head | Surgeon | New York |
| 52 | Elizabeth M. Quimby | 39 | wife | — | Texas |
| 53 | Paula Quimby | 10 | daughter | — | Washington |
| 54 | John M. Quimby | 5 | son | — | Washington |
| 55 | Patricia Radenlaugh | 18 | maid | Housekeeper | Alaska |
| 56 | Alexander Campbell | 75 | head | — | Wisconsin |
| 57 | Caroline Campbell | 67 | wife | — | Massachusetts |
| 58 | Alexander D. Campbell | 25 | son | Receiving Clerk | Washington |
| 59 | Ruth E. Campbell THIS PERSON | 27 | daughter | Stenographer | Washington |
| 60 | Theodore J. Volkey | 54 | head | Appraiser | Montana |
| 61 | Katherine Volkey | 53 | wife | — | Missouri |
| 62 | Lucile Volkey | 24 | daughter | — | Washington |
| 63 | Blanche Morlund | 34 | daughter | — | Washington |
| 64 | Matt Morlund | 45 | son in law | Proprietor | Washington |
| 65 | Katherine U. Morlund | 12 | grand daughter | — | Washington |
| 66 | Theodore Morlund | 9 | grandson | — | Washington |
| 67 | Louis Simson | 54 | head | Mech. Engineer | Wisconsin |
| 68 | Hazel Simson | 54 | wife | — | California |
| 69 | — | None | — | — | — |
| 70 | Russell O. Howard | 76 | head | Proprietor | Maine |
| 71 | Vila B. Howard | 72 | wife | — | Maine |
| 72 | Alma B. Howard | 45 | daughter | X-Ray Technician | Maine |
| 73 | Beulah Campbell | 52 | lodger | Housekeeper | Illinois |
| 74 | Frank J. Greeley | 53 | head | Linotype Op. | Montana |
| 75 | Velva Greeley | 52 | wife | — | Washington |
| 76 | Archie O. Whipple | 52 | head | Trucking Engineer | North Dakota |
| 77 | Edith Whipple | 48 | wife | Stenographer | West Virginia |
| 78 | Mary Whipple | 22 | daughter | — | North Dakota |
| 79 | Ruth Whipple | 20 | daughter | — | Kentucky |
| 80 | Elizabeth Whipple | 18 | daughter | — | Kentucky |
Pedigree Summary
Ruth + 1 sibling
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)