JH
John Hamilton — 1920 US Census Record
Model Tree available1920 United States Federal Census · Decatur, Iowa
Our Model Tree links this John Hamilton across the 1900, 1910 and 1920 US Censuses in Decatur, Iowa (XGBoost, ~Confirmed), with identified parents Earnest & Earnest — first a son (b.~1893), then head of a 7-person household.
Age 27
b. ~1893
Male
Son
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Decatur, Iowa |
| Surname | Hamilton |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Garden Grove Township |
| Est. Birth Year | ~1893 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ruth Hamilton | Daughter | — | 29 | ~1891 |
| Earnest Hamilton | Head | — | 53 | ~1867 |
| Thomas Hamilton | Son | — | 16 | ~1904 |
| John Hamilton | Son | — | 27 | ~1893 |
| Reid Hamilton | Son | — | 19 | ~1901 |
| Earnest Hamilton | Son | — | 22 | ~1898 |
| Alice Hamilton | Spouse | — | 51 | ~1869 |
Census Appearances
1900
Decatur, Iowa
Son, age 8
Decatur, Iowa · implied b. ~1892 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | May |
| Birth Year | 1892 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Decatur, Iowa
Son, age 17
Decatur, Iowa · implied b. ~1893 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Decatur, Iowa
Son, age 27
Decatur, Iowa · implied b. ~1893 — 7 household members
| Surname | Hamilton |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 John Hamilton across 3 US Census years (1900, 1910 and 1920) in Decatur, Iowa, using XGBoost record linkage. Identified parents: father Earnest Hamilton (~0.92 confidence) and father Earnest Hamilton (~0.92 confidence) and father Samuel Hamilton (~0.92 confidence) and mother Alice Hamilton (~0.92 confidence) and mother Alice Hamilton (~0.92 confidence) and mother Alice Hamilton (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Earnest Hamilton
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Earnest Hamilton
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Samuel Hamilton
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Alice Hamilton
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Alice Hamilton
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Alice Hamilton
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hamilton
Son · 1920 · age 27 · b. ~1893 · Iowa
★ You are viewing this record
Sibling
Earnest Hamilton
Sibling · 1920 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Hamilton
Sibling · 1920 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reid Hamilton
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Hamilton
Sibling · 1920 · age 16
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
1920 US Federal Census — Decatur, Iowa
Open full size
1920 US Federal Census — Decatur, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu486unit:0728)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | J Adel | 31 | Brother | Farm Laborer | Sweden |
| 2 | Charles W Luce | 46 | Head | Farmer | Iowa |
| 3 | Daisy E Luce | 32 | Wife | — | Iowa |
| 4 | Irene M Luce | 10 | Daughter | — | Iowa |
| 5 | William J Luce | 7 | Son | — | Iowa |
| 6 | Peter L Opdahl | 35 | Head | Farmer | Norway |
| 7 | Mary E Opdahl | 35 | Wife | — | Ohio |
| 8 | Earnest P Opdahl | 12 | Son | — | South Dakota |
| 9 | Blanche O Opdahl | 10 | Daughter | — | South Dakota |
| 10 | Agnes J Opdahl | 8 | Daughter | — | South Dakota |
| 11 | Louis H Opdahl | 1 | Son | — | Iowa |
| 12 | Frank M Rosengren | 52 | Head | Farmer | Iowa |
| 13 | Etta M Rosengren | 42 | Wife | — | Iowa |
| 14 | Carrie L Rosengren | 22 | Daughter | Teacher | Iowa |
| 15 | Blake S Miller | 42 | Head | Farmer | Pennsylvania |
| 16 | Harriett B Miller | 42 | Wife | — | Iowa |
| 17 | Lenore Miller | 19 | Daughter | Teacher | Iowa |
| 18 | Helen E Miller | 18 | Daughter | — | Iowa |
| 19 | Earnest P Hamilton | 53 | Head | Stockman | Illinois |
| 20 | Alice J Hamilton | 51 | Wife | — | Illinois |
| 21 | Ruth B Hamilton | 29 | Daughter | Teacher | Illinois |
| 22 | John A Hamilton THIS PERSON | 27 | Son | Farmer | Illinois |
| 23 | Earnest P (Jr) Hamilton | 22 | Son | Farm Laborer | Iowa |
| 24 | Reid D Hamilton | 19 | Son | Farm Laborer | Iowa |
| 25 | Thomas L Hamilton | 16 | Son | Farm Laborer | Iowa |
| 26 | Everett E Gain | 40 | Head | Farm Laborer | Missouri |
| 27 | Octava Gain | 34 | Wife | — | Missouri |
| 28 | Marvin M Gain | 8 | Son | — | Missouri |
| 29 | Irene D Gain | 2 | Daughter | — | Iowa |
| 30 | Marie Gain | 0 | Daughter | — | Missouri |
| 31 | Melvin A Goin | 53 | Head | Farm Laborer | Oregon |
| 32 | Sarah L Goin | 62 | Wife | — | Missouri |
| 33 | Alvin E Goin | 20 | Son | — | Missouri |
| 34 | Samuel E Sheeler | 32 | Head | Farm Laborer | Pennsylvania |
| 35 | Zetta A Sheeler | 28 | Wife | — | Kansas |
| 36 | Marvin A Sheeler | 9 | Son | — | Iowa |
| 37 | Carl A Schwartz | 34 | Head | Farm Laborer | Switzerland |
| 38 | Imo E Schwartz | 34 | Wife | — | Michigan |
| 39 | Herbert W Baker | 34 | Head | Farmer | Iowa |
| 40 | Lydia M Baker | 31 | Wife | — | Kansas |
| 41 | Cleo L Baker | 8 | Son | — | Iowa |
| 42 | Mildred M Baker | 4 | Daughter | — | Iowa |
| 43 | Ernestus M Frederick | 47 | Head | Farmer | Illinois |
| 44 | Emma F Frederick | 41 | Wife | — | Illinois |
| 45 | Bessie B Frederick | 16 | Daughter | — | Illinois |
| 46 | Leota B Frederick | 14 | Daughter | — | Illinois |
| 47 | Doris M Frederick | 11 | Daughter | — | Illinois |
| 48 | Phyllis M Frederick | 8 | Daughter | — | Illinois |
| 49 | Daniel A Long | 38 | Head | Farmer | Iowa |
| 50 | Alice M Long | 30 | Wife | — | Iowa |
Pedigree Summary
John + 4 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 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)