KD
Katherine Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Katherine Davis across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Claude & Samuel — first a daughter (b.~1907), then head of a 7-person household.
Age 23
b. ~1907
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Davis |
| Given Name | Katherine M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1907 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Davis | Other | — | 63 | ~1867 |
| Samuel Davis | Son | — | 23 | ~1907 |
| Oscar Davis | Son | — | 25 | ~1905 |
| Mary O'Brien | Other | — | 20 | ~1910 |
| James Walsh | Other | — | 48 | ~1882 |
| Samuel Davis | Head | — | 65 | ~1865 |
| Katherine Davis | Daughter | — | 23 | ~1907 |
Census Appearances
1910
Cook, Illinois
Daughter, age 2
Cook, Illinois · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | California |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 13
Cook, Illinois · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Katherine W. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 23
Cook, Illinois · implied b. ~1907 — 7 household members
| Surname | Davis |
| Given Name | Katherine M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | New York |
| Occupation | none |
| 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 Katherine Davis across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Claude Davis (~0.92 confidence) and father Samuel Davis (~0.92 confidence) and father William Davis (~0.92 confidence) and mother Emma Davis (~0.92 confidence) and mother Evelyn Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Claude Davis
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Samuel Davis
b. ~1865
Source father
● Household
· direct · ~0.92
Father
William Davis
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Emma Davis
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Evelyn Davis
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Katherine Davis
Daughter · 1930 · age 23 · b. ~1907 · Illinois
★ You are viewing this record
Sibling
Oscar Davis
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Davis
Sibling · 1930 · age 23
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:illinoiscensus00reel493ns:0785)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ira Brietta | 22 | Daughter | None | Illinois |
| 52 | Bernice Brietta | 47 | Daughter | President | Russia |
| 53 | Frank R. Thompson | 55 | Head | Salesman | Greece |
| 54 | Demetra S. Thompson | 38 | Wife-H | None | Greece |
| 55 | Lilly Thompson | 23 | — | Packer | Greece |
| 56 | Joseph J. Eichard | 35 | Head | Sales Executive | New York |
| 57 | Eugenia S. Eichard | 24 | Wife-H | None | Louisiana |
| 58 | Edgar S. Thompson | 57 | Head | Money Clerk | Missouri |
| 59 | Mayme D. Thompson | 44 | Wife-H | None | Iowa |
| 60 | Martha Thompson | 24 | Daughter | Stenographer | Missouri |
| 61 | Joseph Krost | 70 | Head | Physician | Indiana |
| 62 | Mary Krost | 64 | Wife-H | None | Connecticut |
| 63 | Louise M. Krost | 34 | Daughter | Servant | Germany |
| 64 | Thomas F. Chambers | 54 | Head | Salesman | New York |
| 65 | Margaret Chambers | 58 | Wife-H | None | Illinois |
| 66 | John Hutchins | 40 | Head | Representative | Tennessee |
| 67 | Jane P. Hutchins | 35 | Wife-H | None | Michigan |
| 68 | William Mcsweeney | 81 | Son-in-law | None | Canada English |
| 69 | Mary T. Flynn | 65 | Head | Teacher | South Dakota |
| 70 | Julia H. Flynn | 51 | Sister-H | None | Illinois |
| 71 | Alice Flynn | 48 | Sister | Teacher | Illinois |
| 72 | William J. Flynn | 36 | Brother | Salesman | Illinois |
| 73 | Anna M. Flynn | 34 | Sister | Librarian | Illinois |
| 74 | Michael J. Dwyer | 61 | Head | Director | Michigan |
| 75 | Bertha R. Dwyer | 59 | Wife-H | None | Ohio |
| 76 | Charles G. Johnson | 37 | Son-in-law | Partner | Illinois |
| 77 | Charles G. Johnson | 1 | Grandson | None | Illinois |
| 78 | Linnea Anderson | 23 | Servant | Servant | Sweden |
| 79 | Louis M. Levin | 40 | Head | Architect | Russia |
| 80 | Leah Levin | 26 | Wife-H | None | Russia |
| 81 | Gloria Levin | 2 | Daughter | None | Illinois |
| 82 | Babette Wecklein | 40 | Servant | Servant | Germany |
| 83 | Samuel G. Davis | 65 | Head | Operator | Kentucky |
| 84 | Evelyn M. Davis | 63 | Wife-H | None | New York |
| 85 | Oscar D. H. Davis | 25 | Son | Research Expert | Illinois |
| 86 | Katherine M. Davis THIS PERSON | 23 | Daughter | None | Illinois |
| 87 | Samuel G. Jr. Davis | 23 | Son | None | Illinois |
| 88 | James E. Walsh | 48 | Brother-in-law | Clerk | New York |
| 89 | Mary O'Brien | 20 | Servant | Servant | Ireland |
| 90 | John Massey | 52 | Head | Inspector | Wisconsin |
| 91 | Alice Massey | 52 | Wife-H | None | Ohio |
| 92 | Gordon L. Massey | 29 | Son | Manager | Illinois |
| 93 | John Jr. Massey | 27 | Son | Floorman | Illinois |
| 94 | Alice Massey | 24 | Daughter | Operator | Illinois |
| 95 | Robert Massey | 22 | Son | None | Illinois |
| 96 | Lorraine E. Massey | 17 | Daughter | None | Illinois |
| 97 | Newell G. Munson | 46 | Head | Salesman | Michigan |
| 98 | Minerva E. Munson | 35 | Wife-H | None | Michigan |
| 99 | Ludwig Baller | 25 | Boarder | Manager | Holland |
| 100 | Violet G. Magie | 37 | Head | Teacher | Illinois |
Pedigree Summary
Katherine + 2 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 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)