RD
Ruth Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Ruth Davis across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents James & Ella — first a daughter (b.~1908), then head of a 3-person household.
Age 22
b. ~1908
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Office Clerk |
| Township / Ward | Village Of Lyons |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Davis | Daughter | — | 22 | ~1908 |
| Alice Davis | Daughter | — | 15 | ~1915 |
| Ella Davis | Head | — | 43 | ~1887 |
Census Appearances
1910
Cook, Illinois
Daughter, age 3
Cook, Illinois · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ruth F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Canada |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 12
Cook, Illinois · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 22
Cook, Illinois · implied b. ~1908 — 3 household members
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Office Clerk |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father James Davis (~0.92 confidence) and mother Ella Davis (~0.92 confidence) and mother Ella Davis (~0.92 confidence) and mother Ella Davis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Davis
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Ella Davis
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Ella Davis
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Ella Davis
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Davis
Daughter · 1930 · age 22 · b. ~1908 · Illinois
★ You are viewing this record
Sibling
Alice Davis
Sibling · 1930 · age 15
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel502:0647)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Krieg | 47 | Head | Roadmaster | Illinois |
| 2 | Blanche Krieg | 46 | Wife-H | — | Illinois |
| 3 | Eugene Krieg | 12 | Son | — | Illinois |
| 4 | George Schuetze | 78 | Head | — | Switzerland |
| 5 | William Schuetze | 43 | Son | Musician | Illinois |
| 6 | Marie Schuetze | 30 | Daughter | — | Wisconsin |
| 7 | Edward Charles | 44 | Head | Salesman | Ohio |
| 8 | Bertha Charles | 38 | Wife-H | — | Kentucky |
| 9 | Harry Charles | 24 | Son | Salesman | Kentucky |
| 10 | Jos. J. Zippel | 52 | Head | Electrician | Illinois |
| 11 | Virginia Zippel | 31 | Wife-H | — | Illinois |
| 12 | Ray Zippel | 3 | Son | — | Illinois |
| 13 | Doris Zippel | 1 | Daughter | — | Illinois |
| 14 | Mary Zippel | 72 | Mother | — | Germany |
| 15 | Henry Parchman | 65 | Head | Cutter | Illinois |
| 16 | Mary Parchman | 56 | Wife-H | — | Austria |
| 17 | Helen Parchman | 17 | Daughter | Laundress | Illinois |
| 18 | John Schreck | 70 | Head | — | Germany |
| 19 | Anna Schreck | 61 | Wife-H | Laundress | Germany |
| 20 | John Schreck | 68 | Head | — | Germany |
| 21 | Eric Schreck | 40 | Son | Clerk | Illinois |
| 22 | Ella Davis | 43 | Head | Servant | Germany |
| 23 | Ruth Davis THIS PERSON | 22 | Daughter | Office Clerk | Illinois |
| 24 | Alice Davis | 15 | Daughter | — | Illinois |
| 25 | Robert Zippel | 45 | Head | Chief Police | Illinois |
| 26 | Mary Zippel | 45 | Wife-H | — | Illinois |
| 27 | George Zippel | 15 | Son | — | Illinois |
| 28 | Charles Piskac | 33 | Brother | Motor Maker | Illinois |
| 29 | John Lyck | 84 | Head | — | Norway |
| 30 | Minnie Lyck | 77 | Wife-H | — | Germany |
| 31 | Fred Franse | 53 | Head | Machinist | Germany |
| 32 | Ida Franse | 53 | Wife-H | — | Illinois |
| 33 | Frank Stley | 30 | Head | Laborer | Illinois |
| 34 | Cleo Stley | 27 | Wife-H | — | Michigan |
| 35 | Norman Stley | 3 | Son | — | Illinois |
| 36 | Burton Stley | 1 | Son | — | Illinois |
| 37 | William Ehlert | 21 | Boarder | Laborer | Michigan |
| 38 | Frank Schive | 35 | Boarder | Laborer | Illinois |
| 39 | John Kolic | 45 | Head | Varnish Maker | Jugoslavia |
| 40 | Rose Kolic | 41 | Wife-H | — | Jugoslavia |
| 41 | Sophia Kolic | 17 | Daughter | Stenographer | Jugoslavia |
| 42 | Anna Kolic | 18 | Daughter | — | Illinois |
| 43 | Anna Kolic | 15 | Daughter | — | Illinois |
| 44 | Frank Molen | 47 | Boarder | Laborer | Jugoslavia |
| 45 | John Struck | 44 | Head | Blacksmith | New York |
| 46 | Adell Struck | 44 | Wife-H | — | Germany |
| 47 | John Struck | 17 | Son | Clerk | Illinois |
| 48 | Roland Struck | 17 | Son | Clerk | Illinois |
| 49 | Robert Grumke | 57 | Head | Stenographer | Germany |
| 50 | Mary Grumke | 53 | Wife-H | — | Illinois |
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 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)