IW
Isaac Williams — 1920 US Census Record
Model Tree available1920 United States Federal Census · Duval, Florida
Our Model Tree links this Isaac Williams across the 1900, 1910 and 1920 US Censuses in Duval, Florida (XGBoost, ~Confirmed), with identified parents A & Robert — first a head (b.~1896), then head of a 3-person household.
Age 24
b. ~1896
Male
Head
Born: Florida
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Duval, Florida |
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Additional Details | |
| Occupation | Laborer |
| Industry | Shipyard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Laborer |
| Township / Ward | Jacksonville City |
| Est. Birth Year | ~1896 |
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 1920 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Isaac Williams | Head | — | 24 | ~1896 |
| James Williams | Son | — | 1 | ~1919 |
| Annie Williams | Spouse | — | 21 | ~1899 |
Census Appearances
1900
Duval, Florida
Son, age 6
Duval, Florida · implied b. ~1894 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Florida |
| Birth Month | Nov |
| Birth Year | 1894 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1910
Duval, Florida
Son, age 14
Duval, Florida · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1920
Duval, Florida
Head, age 24
Duval, Florida · implied b. ~1896 — 3 household members
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Laborer |
| Industry | Shipyard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Isaac Williams across 3 US Census years (1900, 1910 and 1920) in Duval, Florida, using XGBoost record linkage. Identified parents: father A Williams (~0.92 confidence) and father Robert Williams (~0.92 confidence) and mother Francis Williams (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
A Williams
b. ~1855
Source father
● Household
· direct · ~0.92
Father
Robert Williams
b. ~1855
Source father
● Household
· direct · ~0.92
Mother
Francis Williams
b. ~1862
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Williams
Head · 1920 · age 24 · b. ~1896 · Florida
★ 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 — Duval, Florida
Open full size
1920 US Federal Census — Duval, Florida
Page Contents
45 people indexed on this census page (ia:1920:14thcensusofpopu218unit:0269)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Laura Johnson | 17 | — | Servant | Florida |
| 52 | Samuel Seymour | 34 | Head | Laborer | Florida |
| 53 | Annie Seymour | 24 | Wife | Laundress | Florida |
| 54 | James Evans | 27 | Head | Janitor | Georgia |
| 55 | Gertrude Evans | 23 | Wife | — | Florida |
| 56 | Robert Lundell | 60 | Father | — | Georgia |
| 57 | Isaac Jordan | 35 | Head | Laborer | Georgia |
| 58 | Amanda Jordan | 25 | Wife | Laundress | Alabama |
| 59 | Beatrice Dixon | 8 | Daughter | — | Florida |
| 60 | James Davis | 25 | Head | Laborer | Florida |
| 61 | Annie Davis | 23 | Wife | Laundress | Florida |
| 62 | Louise Darling | 22 | Roomer | Laborer | Florida |
| 63 | Lillie Darling | 20 | Roomer | Laborer | Florida |
| 64 | Robert Williams | 28 | Head | Laborer | Florida |
| 65 | Annie Williams | 24 | Wife | Laundress | Florida |
| 66 | Lillie Johnson | 21 | Head | Laundress | Florida |
| 67 | Annie Bell Johnson | 2 | Daughter | — | Florida |
| 68 | Isaac Bolen | 24 | Head | Laundress | Georgia |
| 69 | Robin Johnson | 21 | Roomer | Laborer | N Carolina |
| 70 | Allen Moore | 24 | Head | Laborer | Florida |
| 71 | Martha Moore | 21 | Wife | Laundress | Florida |
| 72 | Sally Moore | 1 | Daughter | — | Florida |
| 73 | James Davis | 24 | Head | Laborer | Florida |
| 74 | Katie Davis | 21 | Wife | Laundress | Florida |
| 75 | Marguerite Davis | 1 | Daughter | — | Florida |
| 76 | Lula Thomas | 24 | Head | Laundress | Florida |
| 77 | James Thomas | 6 | Son | — | Florida |
| 78 | Anthony Thomas | 4 | Son | — | Florida |
| 79 | Isaac Thomas | 2 | Son | — | Florida |
| 80 | William Thomas | 0 | Son | — | Florida |
| 81 | Isaac Clay | 40 | Head | Laborer | Florida |
| 82 | Mary Clay | 35 | Wife | Laundress | Florida |
| 83 | Arthur Williams | 35 | Head | Laborer | Florida |
| 84 | Mollie Williams | 30 | Wife | Laundress | Florida |
| 85 | Ray Williams | 24 | Head | Laborer | Florida |
| 86 | Lula Williams | 21 | Wife | Laundress | Florida |
| 87 | John Williams | 1 | Son | — | Florida |
| 88 | Isaac Williams | 0 | Son | — | Florida |
| 89 | Isaac Hill | 24 | Head | Laborer | Florida |
| 90 | Annie Hill | 21 | Wife | Laundress | Florida |
| 91 | James Hill | 1 | Son | — | Florida |
| 92 | Emma Hill | 0 | Daughter | — | Florida |
| 93 | Isaac Williams THIS PERSON | 24 | Head | Laborer | Florida |
| 94 | Annie Williams | 21 | Wife | Laundress | Florida |
| 95 | James Williams | 1 | Son | — | Florida |
Pedigree Summary
Isaac
Gen 1 · 3 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)