RC
Ruth Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Ruth Campbell across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents Lonzo & S — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Campbell |
| Given Name | Ruth Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville city |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Practical nurse |
| Industry | Doctor's office |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 920 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Practical Nurse |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Mary Campbell | Daughter | — | 17 | ~1923 |
| Ruth Campbell | Daughter | — | 23 | ~1917 |
| S Campbell | Head | — | 67 | ~1873 |
| Viola Campbell | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Jefferson, Kentucky
Daughter, age 2
Jefferson, Kentucky · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Ruth A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Daughter, age 12
Jefferson, Kentucky · implied b. ~1918 — 10 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 | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Daughter, age 23
Jefferson-County, Kentucky · implied b. ~1917 — 4 household members
| Surname | Campbell |
| Given Name | Ruth Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville city |
| 1935 Residence (County) | Jefferson |
| Occupation | Practical nurse |
| Industry | Doctor's office |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 920 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Lonzo Campbell (~0.92 confidence) and father S Campbell (~0.92 confidence) and father George Campbell (~0.92 confidence) and mother Viola Campbell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lonzo Campbell
b. ~1873
Source father
● Household
· direct · ~0.92
Father
S Campbell
b. ~1873
Source father
● Household
· direct · ~0.92
Father
George Campbell
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Viola Campbell
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Campbell
Daughter · 1940 · age 23 · b. ~1917 · Kentucky
★ You are viewing this record
Sibling
Mary Campbell
Sibling · 1940 · age 17
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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01365-00132)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | S. W. Campbell | 67 | Head | Owner | Alabama |
| 42 | Viola Campbell | 51 | Wife | — | Kentucky |
| 43 | Ruth Ann Campbell THIS PERSON | 23 | Daughter | Practical Nurse | Kentucky |
| 44 | Mary Elizabeth Campbell | 17 | Daughter | — | Kentucky |
| 45 | Fred B. Linder | 74 | Head | — | Germany |
| 46 | Mary K. Linder | 73 | Wife | — | Kentucky |
| 47 | Maurice Smith | 26 | Son-in-law | Salesman | Kentucky |
| 48 | Maurine Smith | 25 | Daughter | — | Kentucky |
| 49 | Harry Marking | 27 | Head | Type-Setter | Indiana |
| 50 | Katherine Marking | 26 | Wife | Box Binder | Indiana |
| 51 | John E. Bohert | 35 | Head | Note Teller | Kentucky |
| 52 | Isabell O. Bohert | 34 | Wife | — | Kentucky |
| 53 | Mary Alice Bohert | 9 | Daughter | — | Kentucky |
| 54 | Catherine Lena Bohert | 7 | Daughter | — | Kentucky |
| 55 | John Charles Bohert | 5 | Son | — | Kentucky |
| 56 | Richard Andrew Bohert | 2 | Son | — | Kentucky |
| 57 | Robert Joseph Bohert | 0 | Son | — | Kentucky |
| 58 | Glenn Bond | 46 | Head | Cattle Buyer | Indiana |
| 59 | Gladys Bond | 38 | Wife | — | Ohio |
| 60 | John Martin Bond | 16 | Son | — | Indiana |
| 61 | Robert Bond | 15 | Son | — | Indiana |
| 62 | Viola Burton | 75 | Mother-in-law | — | Ohio |
| 63 | Frank J. Kaelin | 59 | Head | Tailor | Kentucky |
| 64 | Rose Kaelin | 55 | Wife | — | Kentucky |
| 65 | Charles T. Kaelin | 27 | Son | Laborer | Kentucky |
| 66 | Paul A. Kaelin | 26 | Son | Clerk | Kentucky |
| 67 | Frank H. Kaelin | 24 | Son | Assistant Brewer | Kentucky |
| 68 | Elvey Howell | 35 | Head | Casing Room Foreman | Kentucky |
| 69 | Lura Howell | 32 | Wife | — | Kentucky |
| 70 | John E. Murphy | 57 | Head | Machinist | Indiana |
| 71 | Agnes D. Murphy | 42 | Wife | — | Kentucky |
| 72 | Richard Murphy | 18 | Son | — | Kentucky |
| 73 | Anna Catherine Murphy | 10 | Daughter | — | Kentucky |
| 74 | Theodore Bark | 36 | Head | Mail Carrier | Kentucky |
| 75 | Margaret A. Bark | 39 | Wife | — | Kentucky |
| 76 | Joan Bark | 12 | Daughter | — | Kentucky |
| 77 | Patricia Bark | 11 | Daughter | — | Kentucky |
| 78 | Theodore Bark | 8 | Son | — | Kentucky |
| 79 | Thomas Bark | 5 | Son | — | Kentucky |
| 80 | Henry Wehrley | 55 | Head | Carpenter | Kentucky |
Pedigree Summary
Ruth + 1 sibling
Gen 1 · 4 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)