WM
William Mack — 1920 US Census Record
Model Tree available1920 United States Federal Census · Alachua, Florida
Our Model Tree links this William Mack across the 1920, 1930 and 1940 US Censuses in Alachua, Florida (XGBoost, ~Confirmed), with identified parents William & Sarah — first a son (b.~1902), then head of a 9-person household.
Age 18
b. ~1902
Male
Son
Born: Florida
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Alachua, Florida |
| Surname | Mack |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Township / Ward | Newberry Precinct 6 |
| Est. Birth Year | ~1902 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Primus Mack | Son | — | 4 | ~1916 |
| Theodore Mack | Son | — | 7 | ~1913 |
| Mary Mack | Daughter | — | 9 | ~1911 |
| William Mack | Son | — | 18 | ~1902 |
| Sarah Mack | Daughter | — | 15 | ~1905 |
| Lemmy Mack | Daughter | — | 13 | ~1907 |
| Enos Mack | Son | — | 11 | ~1909 |
| Sarah Mack | Spouse | — | 37 | ~1883 |
| William Mack | Head | — | 46 | ~1874 |
Census Appearances
1920
Alachua, Florida
Son, age 18
Alachua, Florida · implied b. ~1902 — 9 household members
| Surname | Mack |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Bradford, Florida
Son, age 28
Bradford, Florida · implied b. ~1902 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 23 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Farming |
| Industry | Operator |
| Class of Worker | O |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Bradford-County, Florida
Head, age 39
Bradford-County, Florida · implied b. ~1901 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Willie |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | South Starke |
| 1935 Residence (County) | Bradford |
| Occupation | Section hand |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 884 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 William Mack across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father William Mack (~0.92 confidence) and mother Sarah Mack (~0.92 confidence) and mother Victoria Mack (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Mack
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Sarah Mack
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Victoria Mack
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mack
Son · 1920 · age 18 · b. ~1902 · Florida
★ You are viewing this record
Sibling
Mary Mack
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Primus Mack
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lemmy Mack
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Mack
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Mack
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Enos Mack
Sibling · 1920 · age 11
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 — Alachua, Florida
Open full size
1920 US Federal Census — Alachua, Florida
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu214unit:0168)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Morgan | 11 | Grandson | — | Florida |
| 2 | Emmer Morgan | 7 | Granddaughter | — | Florida |
| 3 | Basil Lang | 23 | Head | Farmer | Florida |
| 4 | Esteller Lang | 24 | Wife | — | Florida |
| 5 | Lyman Lang | 6 | Son | — | Florida |
| 6 | Beatrice Lang | 4 | Daughter | — | Florida |
| 7 | Lillie Lang | 2 | Daughter | — | Florida |
| 8 | Luella Lang | 0 | Daughter | — | Florida |
| 9 | Willie Ross | 43 | Head | Farmer | Florida |
| 10 | Sallie Ross | 40 | Wife | — | Florida |
| 11 | Cecilia Rochelle | 77 | Mother-in-law | — | South Carolina |
| 12 | Hrasier Johnson | 57 | Head | Farm Laborer | Alabama |
| 13 | Lyman Lang | 19 | Head | Farm Laborer | Florida |
| 14 | Ethel Lang | 16 | Wife | — | Florida |
| 15 | Minnie M. Lang | 0 | Daughter | — | Florida |
| 16 | J. Lee | 12 | Son | — | Florida |
| 17 | Nathaniel Pinkney | 39 | Head | Farmer | Florida |
| 18 | Emmer Pinkney | 27 | Wife | — | Florida |
| 19 | Jessie Pinkney | 9 | Son | — | Florida |
| 20 | Earl James | 72 | Head | — | South Carolina |
| 21 | Sarah James | 47 | Wife | — | Florida |
| 22 | Frank Mickum | 38 | Head | Farmer | South Carolina |
| 23 | Estella Mickum | 18 | Daughter | — | Florida |
| 24 | Maxine Mickum | 14 | Daughter | — | Florida |
| 25 | Sam James | 44 | Head | Farmer | Florida |
| 26 | Annie James | 39 | Wife | — | Florida |
| 27 | William Mack | 46 | Head | Farmer | Florida |
| 28 | Sarah W. Mack | 37 | Wife | — | Florida |
| 29 | William Jr. Mack THIS PERSON | 18 | Son | — | Florida |
| 30 | Sarah Mack | 15 | Daughter | — | Florida |
| 31 | Lemmy Mack | 13 | Daughter | — | Florida |
| 32 | Enos Mack | 11 | Son | — | Florida |
| 33 | Mary L. Mack | 9 | Daughter | — | Florida |
| 34 | Theodore Mack | 7 | Son | — | Florida |
| 35 | Primus G. Mack | 4 | Son | — | Florida |
| 36 | Henry Singleton | 56 | Head | Farmer | Florida |
| 37 | Leanna Singleton | 48 | Wife | — | Florida |
| 38 | Ella L. Singleton | 26 | Daughter | — | Florida |
| 39 | Laura E. Singleton | 20 | Daughter | — | Florida |
| 40 | Fannie M. Singleton | 18 | Daughter | — | Florida |
| 41 | Samuel J. Singleton | 15 | Son | — | Florida |
| 42 | Lillian L. Singleton | 12 | Daughter | — | Florida |
| 43 | Edward S. Singleton | 10 | Son | — | Florida |
| 44 | Alfonse S. Singleton | 8 | Son | — | Florida |
| 45 | Johnnie Singleton | 52 | Brother | Farm Laborer | Florida |
| 46 | Jeff T. Hedricks | 51 | Nephew | Farm Laborer | Florida |
| 47 | Ellis Baskin | 47 | Head | Farmer | Florida |
| 48 | Ethel M. Baskin | 24 | Daughter | Farm Laborer | Florida |
| 49 | Isabella V. Baskin | 22 | Daughter | — | Florida |
| 50 | James Parling | 43 | Head | Farmer | Georgia |
Pedigree Summary
William + 6 siblings
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)