RC
Robert Clark — 1920 US Census Record
Model Tree available1920 United States Federal Census · Keokuk, Iowa
Our Model Tree links this Robert Clark across the 1900, 1910 and 1920 US Censuses in Keokuk, Iowa (XGBoost, ~Confirmed), with identified parents Andrew & Sarah — first a head (b.~1890), then head of a 5-person household.
Age 30
b. ~1890
Male
Head
Born: Iowa
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Keokuk, Iowa |
| Surname | Clark |
| Given Name | Robert F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sigourney Township |
| Est. Birth Year | ~1890 |
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 1920 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Clark | Daughter | — | 1 | ~1919 |
| Robert Clark | Head | — | 30 | ~1890 |
| Harold Clark | Son | — | 5 | ~1915 |
| Bruce Clark | Son | — | 4 | ~1916 |
| Eula Clark | Spouse | — | 22 | ~1898 |
Census Appearances
1900
Keokuk, Iowa
Son, age 11
Keokuk, Iowa · implied b. ~1889 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Aug |
| Birth Year | 1889 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | At school |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Keokuk, Iowa
Son, age 20
Keokuk, Iowa · implied b. ~1890 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Home Farm |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Keokuk, Iowa
Head, age 30
Keokuk, Iowa · implied b. ~1890 — 5 household members
| Surname | Clark |
| Given Name | Robert F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| 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 Robert Clark across 3 US Census years (1900, 1910 and 1920) in Keokuk, Iowa, using XGBoost record linkage. Identified parents: father Andrew Clark (~0.92 confidence) and mother Sarah Clark (~0.92 confidence) and father George Clarke (~0.92 confidence) and mother Sarah Clarke (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Clark
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Sarah Clark
b. ~1855
Source mother
● Household
· direct · ~0.92
Father
George Clarke
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Sarah Clarke
b. ~1853
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Clark
Head · 1920 · age 30 · b. ~1890 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Keokuk, Iowa
Open full size
1920 US Federal Census — Keokuk, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu497unit:0320)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George W. Rider | 15 | Son | Laborer | Iowa |
| 52 | Bert N. Rider | 14 | Son | Laborer | Iowa |
| 53 | Evelyn Rider | 13 | Daughter | Laborer | Iowa |
| 54 | Irene M. Rider | 11 | Daughter | — | Iowa |
| 55 | Olis A. Rider | 10 | Son | — | Iowa |
| 56 | Charles M. Rider | 8 | Son | — | Iowa |
| 57 | Marguerite Rider | 7 | Daughter | — | Iowa |
| 58 | Lloyd N. Rider | 6 | Son | — | Iowa |
| 59 | Mary L. Rider | 3 | Daughter | — | Iowa |
| 60 | Maxine Rider | 1 | Daughter | — | Iowa |
| 61 | Charles D. Pfaff | 62 | Head | — | Iowa |
| 62 | Maggie Pfaff | 63 | Wife | Laborer | Indiana |
| 63 | Earl D. Pfaff | 26 | Son | — | Iowa |
| 64 | Esther Pfaff | 23 | Daughter | Laborer | Iowa |
| 65 | Joy Pfaff | 20 | Daughter | — | Iowa |
| 66 | Roy Pfaff | 20 | Son | — | Iowa |
| 67 | Anderson Chubbs | 39 | Head | Laborer | Iowa |
| 68 | Cassie Chubbs | 27 | Wife | Farmer | Iowa |
| 69 | Helen Chubbs | 6 | Daughter | — | Iowa |
| 70 | Rufus Chubbs | 4 | Son | — | Iowa |
| 71 | Louise Chubbs | 3 | Daughter | — | Iowa |
| 72 | Jesse N. Chubbs | 1 | Son | — | Iowa |
| 73 | Peter Brummeller | 55 | Head | — | Iowa |
| 74 | Barbara Brummeller | 47 | Wife | Farmer | Iowa |
| 75 | Edna Brummeller | 22 | Daughter | — | Iowa |
| 76 | Jessie Brummeller | 19 | Daughter | Laborer | Iowa |
| 77 | William Brummeller | 15 | Daughter | — | Iowa |
| 78 | Fred Brummeller | 15 | Son | — | Iowa |
| 79 | Frank Brummeller | 13 | Son | — | Iowa |
| 80 | Gladys Brummeller | 8 | Daughter | — | Iowa |
| 81 | Allen S. Andrews | 51 | Head | — | Iowa |
| 82 | Kate Andrews | 48 | Wife | Farmer | Iowa |
| 83 | Harry S. Andrews | 21 | Son | — | Iowa |
| 84 | Cecil L. Andrews | 19 | Son | Laborer | Iowa |
| 85 | Ramona F. Andrews | 16 | Daughter | Laborer | Iowa |
| 86 | Fred R. Andrews | 14 | Son | — | Iowa |
| 87 | Belle M. Andrews | 12 | Daughter | — | Iowa |
| 88 | Edith Andrews | 4 | Daughter | — | Iowa |
| 89 | Robert F. Clark THIS PERSON | 30 | Head | — | Iowa |
| 90 | Eula M. Clark | 22 | Wife | Farmer | Iowa |
| 91 | Harold R. Clark | 5 | Son | — | Iowa |
| 92 | Bruce W. Clark | 4 | Son | — | Iowa |
| 93 | Dorothy E. Clark | 1 | Daughter | — | Iowa |
| 94 | John W. Utterback | 49 | Head | — | Iowa |
| 95 | Kate Utterback | 44 | Wife | Farmer | Iowa |
| 96 | Otis O. Utterback | 23 | Son | — | Iowa |
| 97 | Amy M. Utterback | 21 | Daughter | Automobile | Iowa |
| 98 | Paul W. Utterback | 19 | Son | Baker | Iowa |
| 99 | Milton J. Fairchild | 32 | Head | Laborer | Iowa |
| 100 | Emma M. Fairchild | 28 | Wife | Farmer | Iowa |
Pedigree Summary
Robert
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 1920 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)