RD
Ruth Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Polk, Iowa
Our Model Tree links this Ruth Davis across the 1910, 1920 and 1930 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents George & George — first a daughter (b.~1910), then head of a 5-person household.
Age 20
b. ~1910
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1910 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Davis | Daughter | — | 20 | ~1910 |
| Mildred Davis | Daughter | — | 17 | ~1913 |
| George Davis | Head | — | 50 | ~1880 |
| Shirley Davis | Son | — | 5 | ~1925 |
| Dora Davis | Spouse | — | 43 | ~1887 |
Census Appearances
1910
Polk, Iowa
Daughter, age
Polk, Iowa · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Daughter, age 10
Polk, Iowa · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 20
Polk, Iowa · implied b. ~1910 — 5 household members
| Surname | Davis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Polk, Iowa, using XGBoost record linkage. Identified parents: father George Davis (~0.92 confidence) and father George Davis (~0.92 confidence) and father George Davis (~0.92 confidence) and mother Dora Davis (~0.92 confidence) and mother Nora Davis (~0.92 confidence) and mother Will Davis (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Davis
b. ~1875
Source father
● Household
· direct · ~0.92
Father
George Davis
b. ~1876
Source father
● Household
· direct · ~0.92
Father
George Davis
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Dora Davis
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Nora Davis
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Will Davis
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Davis
Daughter · 1930 · age 20 · b. ~1910 · Iowa
★ You are viewing this record
Sibling
Mildred Davis
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Davis
Sibling · 1930 · age 5
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 — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel677:0620)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Cecil T Devitt | 12 | Head | — | Iowa |
| 52 | Neal Witte | 45 | Head | Miner | Illinois |
| 53 | Mary Witte | 45 | Wife | — | Iowa |
| 54 | Florence Witte | 19 | Daughter | Operator | Illinois |
| 55 | Bernice Witte | 17 | Daughter | — | Illinois |
| 56 | Edward Witte | 10 | Son | — | Illinois |
| 57 | Glenn Edgington | 30 | Head | Mechanic | Iowa |
| 58 | Gertrude Edgington | 27 | Wife | — | Iowa |
| 59 | Clifford Borden | 22 | Roomer | — | Iowa |
| 60 | Axel Olson | 46 | Head | Miner | Iowa |
| 61 | Elsie Olson | 41 | Wife | — | Iowa |
| 62 | Elmer Olson | 19 | Son | — | Iowa |
| 63 | Louise Bolick | 18 | Daughter | — | Iowa |
| 64 | Edward Bolick | 19 | Son-in-law | Laborer | Iowa |
| 65 | James Sargent | 50 | Head | Laborer | Iowa |
| 66 | Fannie Sargent | 55 | Wife | — | Iowa |
| 67 | Catherine Sargent | 16 | Daughter | — | Iowa |
| 68 | John Jackson | 32 | Head | Laborer | Iowa |
| 69 | Mabel L Jackson | 31 | Wife | — | Iowa |
| 70 | Doris M Jackson | 12 | Daughter | — | Iowa |
| 71 | Ida L Jackson | 4 | Daughter | — | Iowa |
| 72 | Dorothy Lewis | 15 | Sister-in-law | — | Iowa |
| 73 | Edward Corley | 34 | Head | Miner | Alabama |
| 74 | Ethel M Corley | 29 | Wife | — | Missouri |
| 75 | Belva Corley | 9 | Daughter | — | Iowa |
| 76 | Marvin Corley | 6 | Son | — | Iowa |
| 77 | Eugene Corley | 5 | Son | — | Iowa |
| 78 | Maxine Corley | 3 | Daughter | — | Iowa |
| 79 | George W Mcclathen | 41 | Head | Porter | Texas |
| 80 | Mattie Mcclathen | 29 | Wife | — | Texas |
| 81 | Arthur Turner | 45 | Head | Janitor | Tennessee |
| 82 | Zula Turner | 42 | Wife | — | Kansas |
| 83 | Irene Turner | 21 | Daughter | Janitor | Kansas |
| 84 | Isabell Turner | 16 | Daughter | — | Iowa |
| 85 | Fletcher Slater | 27 | Head | Miner | Virginia |
| 86 | Dorothy Slater | 19 | Wife | — | Iowa |
| 87 | Cherry Slater | 1 | Son | — | Iowa |
| 88 | George W Davis | 50 | Head | Miner | Alabama |
| 89 | Dora B Davis | 43 | Wife | Domestic | Iowa |
| 90 | Ruth Davis THIS PERSON | 20 | Daughter | — | Iowa |
| 91 | Mildred Davis | 17 | Daughter | — | Iowa |
| 92 | Shirley Davis | 5 | Son | — | Iowa |
| 93 | Alice Forten | 50 | Head | — | Iowa |
| 94 | Ralph Forten | 23 | Son | — | Iowa |
| 95 | Donald Forten | 21 | Son | — | Iowa |
| 96 | Jesse Wilson | 21 | Roomer | — | Iowa |
| 97 | Nick Nelson | 66 | Head | Miner | Virginia |
| 98 | Amanda Nelson | 58 | Wife | — | Kentucky |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
Pedigree Summary
Ruth + 2 siblings
Gen 1 · 6 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)