RD
Ruth Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ruth Davis across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Harry & Harry — first a daughter (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Saleswoman |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 570 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Saleswoman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Davis | Daughter | — | 21 | ~1919 |
| Agnes Davis | Daughter | — | 25 | ~1915 |
| Marilyn Davis | Daughter | — | 12 | ~1928 |
| Shirley Davis | Daughter | — | 16 | ~1924 |
| Clarence Davis | Head | — | 48 | ~1892 |
| Gerald Davis | Son | — | 9 | ~1931 |
Census Appearances
1920
Cook, Illinois
Daughter, age 1
Cook, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Russia |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 11
Cook, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ruth S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Russia |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 21
Cook-County, Illinois · implied b. ~1919 — 6 household members
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Saleswoman |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 570 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Davis (~0.92 confidence) and father Harry Davis (~0.92 confidence) and mother Sophie Davis (~0.92 confidence) and father Clarence Davis (~0.92 confidence) and mother Floreda Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Davis
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Harry Davis
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Sophie Davis
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Clarence Davis
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Floreda Davis
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Davis
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Shirley Davis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilyn Davis
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Davis
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Davis
Sibling · 1940 · age 9
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01018-00245)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sadie Schaeffer | 53 | Wife | — | Illinois |
| 2 | Eleanor Schaeffer | 23 | Daughter | Physical Education | Illinois |
| 3 | Ruth Schaeffer | 19 | Daughter | Stenographer | Illinois |
| 4 | Samuel Schaeffer | 68 | Brother | Tailor | Russia |
| 5 | William Greatman | 47 | Head | Lawyer | Illinois |
| 6 | Bernice Greatman | 36 | Wife | — | Illinois |
| 7 | Burton Greatman | 11 | Son | — | Illinois |
| 8 | Bonnie Greatman | 1 | Daughter | — | Illinois |
| 9 | Wanda Miller | 18 | Servant | Maid | Wisconsin |
| 10 | Bert Smithson | 43 | Head | Interior Decorator | New York |
| 11 | Ruth Smithson | 39 | Wife | — | Illinois |
| 12 | Paul Smithson | 14 | Son | — | Illinois |
| 13 | Rose Mills | 72 | Mother in law | — | Russia |
| 14 | Dorothy Mills | 42 | Sister in law | Inspector | Illinois |
| 15 | Jay Mills | 32 | Brother in law | Proprietor | Illinois |
| 16 | Clarence Davis | 48 | Head | — | Russia |
| 17 | Agnes Davis | 25 | Daughter | Stenographer | Illinois |
| 18 | Ruth Davis THIS PERSON | 21 | Daughter | Saleswoman | Illinois |
| 19 | Shirley Davis | 16 | Daughter | — | Illinois |
| 20 | Marilyn Davis | 12 | Daughter | — | Illinois |
| 21 | Gerald Davis | 9 | Son | — | Illinois |
| 22 | Sam Garfine | 67 | Head | — | Russia |
| 23 | Gussie Garfine | 59 | Wife | — | Russia |
| 24 | Robert Garfine | 26 | Son | Mail Clerk | Illinois |
| 25 | Rose Gontovnich | 34 | Daughter | — | Russia |
| 26 | Elliott Gontovnich | 35 | Son in law | Salesman | Lithuania |
| 27 | Bernard Gontovnich | 12 | Grandson | — | Illinois |
| 28 | Henry Shore | 49 | Head | — | Rumania |
| 29 | Sadie Shore | 48 | Wife | — | Hungary |
| 30 | David Shore | 24 | Son | Salesman | Illinois |
| 31 | Ben Smith | 56 | Head | Salesman | Poland |
| 32 | Sarah Smith | 53 | Wife | — | Poland |
| 33 | Dorothy Smith | 30 | Daughter | Bookkeeper | Illinois |
| 34 | Rose Smith | 29 | Daughter | Saleswoman | Illinois |
| 35 | Nathan Smith | 28 | Son | Shipping Clerk | Illinois |
| 36 | Sam Chernoff | 48 | Head | Salesman | Russia |
| 37 | Ida Chernoff | 40 | Wife | — | New York |
| 38 | Lawrence Chernoff | 10 | Son | — | Illinois |
| 39 | Beryl Chernoff | 6 | Daughter | — | Illinois |
| 40 | Rose Hill | 26 | Sister in law | Stenographer | New York |
Pedigree Summary
Ruth + 4 siblings
Gen 1 · 5 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)