JB
John Brock — 1920 US Census Record
Model Tree available1920 United States Federal Census · Bexar, Texas
Our Model Tree links this John Brock across the 1920, 1930 and 1940 US Censuses in Bexar, Texas (XGBoost, ~Confirmed), with identified parents E & Ervin — first a son (b.~1913), then head of a 3-person household.
Age 7
b. ~1913
Male
Son
Born: Texas
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Bexar, Texas |
| Surname | Brock |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Tennessee |
| Additional Details | |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | San Antonio |
| Est. Birth Year | ~1913 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Owen Brock | Head | — | 29 | ~1891 |
| Lee Brock | Spouse | — | 31 | ~1889 |
| John Brock | Son | — | 7 | ~1913 |
Census Appearances
1920
Bexar, Texas
Son, age 7
Bexar, Texas · implied b. ~1913 — 3 household members
| Surname | Brock |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Tennessee |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1930
Bexar, Texas
Son, age 17
Bexar, Texas · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brack |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Tennessee |
| Occupation | Assistant Manager |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Bexar-County, Texas
Son, age 27
Bexar-County, Texas · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brack |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | San Antonio |
| 1935 Residence (County) | Bexar |
| Occupation | Office Manager |
| Industry | Cash Register |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Brock across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father E Brack (~0.92 confidence) and father Ervin Brack (~0.92 confidence) and father Owen Brock (~0.92 confidence) and mother Corine Brack (~0.60 confidence) and mother Emma Brack (~0.92 confidence) and mother Lee Brock (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
E Brack
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Ervin Brack
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Owen Brock
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Corine Brack
b. ~1908
Source mother
● Household
· direct · ~0.6
Mother
Emma Brack
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Lee Brock
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Brock
Son · 1920 · age 7 · b. ~1913 · Texas
★ 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 — Bexar, Texas
Open full size
1920 US Federal Census — Bexar, Texas
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1779unit:0841)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Son Floyd | 13 | son | None | Texas |
| 2 | Carlitt Floyd | 9 | daughter | None | Texas |
| 3 | Virginia Floyd | 7 | daughter | None | Texas |
| 4 | Lois Floyd | 5 | daughter | None | Texas |
| 5 | Mable Floyd | 1 | daughter | None | Texas |
| 6 | Willie H Hawkes | 32 | Head | Machinist | Texas |
| 7 | Lillian Hawkes | 26 | wife | — | Texas |
| 8 | Alda Mae Hawkes | 1 | daughter | — | Texas |
| 9 | Louis W Bruns | 34 | Head | Packer | Texas |
| 10 | Martha Bruns | 38 | wife | — | Texas |
| 11 | Lawrence Bruns | 13 | son | — | Texas |
| 12 | Wilfred Bruns | 12 | son | — | Texas |
| 13 | Ellis Bruns | 10 | son | — | Texas |
| 14 | Elvira Bruns | 7 | daughter | — | Texas |
| 15 | Lillie Hoppe | 37 | sister-in-law | Bookkeeper | Texas |
| 16 | Thomas Childs | 52 | Head | Operator | Kentucky |
| 17 | Mary Serena Childs | 44 | wife | — | Texas |
| 18 | Victor B Childs | 23 | son | Soldier | Texas |
| 19 | Thomas B Childs | 21 | son | Soldier | Texas |
| 20 | Mable Childs | 24 | daughter | — | Texas |
| 21 | Anna Pearl Childs | 11 | daughter | — | Texas |
| 22 | Russell Roman Dott | 35 | Head | Chauffeur | Australia |
| 23 | Margaret Dott | 27 | wife | — | Mississippi |
| 24 | Roman Dott | 7 | son | — | Texas |
| 25 | Ludwig Dott | 6 | son | — | Texas |
| 26 | Rae Dott | 4 | son | — | Texas |
| 27 | Owen Brock | 29 | Head | Auto Mech | Texas |
| 28 | Lee Brock | 31 | wife | — | Tennessee |
| 29 | John Brock THIS PERSON | 7 | son | — | Texas |
| 30 | August Happenmeyer | 58 | Head | Laborer | Texas |
| 31 | Olga Happenmeyer | 32 | wife | — | Texas |
| 32 | Herman Happenmeyer | 18 | son | — | Texas |
| 33 | Hattie Happenmeyer | 14 | daughter | Sign Painter | Texas |
| 34 | Alfred Happenmeyer | 12 | son | — | Texas |
| 35 | Andrew Arnesen | 57 | Head | Laborer | Norway |
| 36 | Rachel Arnesen | 40 | wife | None | Minnesota |
| 37 | Mary Arnesen | 18 | daughter | Stenographer | Missouri |
| 38 | Herman Conger | 31 | Head | Agent | New York |
| 39 | Cornelia Conger | 22 | wife | — | New York |
| 40 | Victor Rosner | 25 | Head | Chauffeur | Texas |
| 41 | Hilda Rosner | 24 | wife | — | Texas |
| 42 | Elvira Rosner | 5 | daughter | — | Texas |
| 43 | Albert Reichert | 56 | Head | Contractor | Illinois |
| 44 | Minna Reichert | 52 | wife | — | Germany |
| 45 | William Reichert | 18 | son | — | Texas |
| 46 | Bertha Berger | 83 | mother-in-law | — | Germany |
| 47 | Mary Hunt | 49 | Head | Music Teacher | Ohio |
| 48 | Pearl Hunt | 22 | daughter | Cashier | Texas |
| 49 | Cornelia Hunt | 19 | daughter | P.O. Clerk | Texas |
| 50 | Elizabeth Mccaskill | 26 | daughter | Typist | Texas |
Pedigree Summary
John
Gen 1 · 6 parents
~0.87
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)