WB
William Brock — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Sioux, Iowa
Our Model Tree links this William Brock across the 1920, 1930 and 1940 US Censuses in Sioux, Iowa (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 9-person household.
Age 46
b. ~1884
Male
Head
Born: Holland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Sioux, Iowa |
| Surname | Brock |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Holland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 28 |
| Father's Birthplace | Holland |
| Mother's Birthplace | Holland |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Dutch |
| Home Owned/Rented | R |
| Home Value / Rent | $37 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Netherlands |
| Birthplace (normalized) | holland |
| Occupation | Farmer |
| Township / Ward | Welcome Township |
| Est. Birth Year | ~1884 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Brock | Head | — | 46 | ~1884 |
| John Brock | Son | — | 7 | ~1923 |
| Margaret Brock | Daughter | — | 5 | ~1925 |
| Albert Brock | Son | — | 9 | ~1921 |
| Harriet Brock | Daughter | — | 14 | ~1916 |
| Henrietta Van Driel | Other | — | 15 | ~1915 |
| Hattie Brock | Spouse | — | 43 | ~1887 |
| David Brock | Son | — | 12 | ~1918 |
| Marion Brock | Son | — | 16 | ~1914 |
Census Appearances
1920
Sioux, Iowa
Head, age 36
Sioux, Iowa · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Holland |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Holland |
| Mother's Birthplace | Holland |
| Occupation | farmer |
| Industry | Gen farm |
| Class of Worker | oa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Dutch |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Netherlands |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | holland |
1930
Sioux, Iowa
Head, age 46
Sioux, Iowa · implied b. ~1884 — 9 household members
| Surname | Brock |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Holland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 28 |
| Father's Birthplace | Holland |
| Mother's Birthplace | Holland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Dutch |
| Home Owned/Rented | R |
| Home Value / Rent | $37 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Netherlands |
| Birthplace (normalized) | holland |
1940
Sioux-County, Iowa
Head, age 56
Sioux-County, Iowa · implied b. ~1884 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Broek |
| Given Name | Wm |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Holland |
| 1935 Residence (City) | Welcome |
| 1935 Residence (County) | Sioux |
| Naturalization Status | Naturalized |
| Occupation | Farm operator |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Netherlands |
| Birthplace (normalized) | holland |
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 Brock across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Brock
Head · 1930 · age 46 · b. ~1884 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Sioux, Iowa
Open full size
1930 US Federal Census — Sioux, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel683:0435)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John G Huizenga | 37 | Head | Farmer | Iowa |
| 2 | Johanna H Huizenga | 32 | Wife | — | Iowa |
| 3 | Harriet Huizenga | 8 | Daughter | — | Iowa |
| 4 | Arlene Huizenga | 6 | Daughter | — | Iowa |
| 5 | Bernice Huizenga | 3 | Daughter | — | Iowa |
| 6 | George J Visser | 23 | Servant | Laborer | Minnesota |
| 7 | Henry J Wissink | 34 | Head | Farmer | Iowa |
| 8 | Wilhelmina Wissink | 33 | Wife | — | Iowa |
| 9 | Marion G Wissink | 8 | Son | — | Iowa |
| 10 | William H Wissink | 6 | Son | — | Iowa |
| 11 | Gertrude E Wissink | 3 | Daughter | — | Iowa |
| 12 | Everly G Wissink | 1 | Daughter | — | Iowa |
| 13 | Gerrit Van Putten | 49 | Head | Farmer | Holland |
| 14 | Agatha Van Putten | 48 | Wife | — | Iowa |
| 15 | Edward Van Putten | 20 | Son | Laborer | Iowa |
| 16 | Clarence Van Putten | 17 | Son | Laborer | Iowa |
| 17 | Edna Van Putten | 13 | Daughter | — | Iowa |
| 18 | Gertrude Van Putten | 8 | Daughter | — | Iowa |
| 19 | Ben Bleyenberg | 30 | Head | Farmer | Holland |
| 20 | Alberta Bleyenberg | 28 | Wife | — | Iowa |
| 21 | Mina Bleyenberg | 3 | Daughter | — | Iowa |
| 22 | Arthur Bleyenberg | 1 | Son | — | Iowa |
| 23 | Cornelius De Vos | 19 | Servant | Laborer | Holland |
| 24 | Frank B Punt | 31 | Head | Farmer | Iowa |
| 25 | Jeanette H Punt | 27 | Wife | — | Iowa |
| 26 | Arnold G Punt | 3 | Son | — | Iowa |
| 27 | Bert Vander Brake | 22 | Servant | Laborer | Iowa |
| 28 | Harry Ten Harmesel | 26 | Head | Farmer | Holland |
| 29 | Dina Ten Harmesel | 23 | Wife | — | Iowa |
| 30 | Andrew E Ten Harmesel | 1 | Son | — | Iowa |
| 31 | John Landegent | 41 | Head | Farmer | Holland |
| 32 | Annie J Landegent | 31 | Wife | — | Holland |
| 33 | Herbert W Landegent | 6 | Son | — | Iowa |
| 34 | Johanna C Landegent | 4 | Daughter | — | Iowa |
| 35 | William J Landegent | 1 | Son | — | Iowa |
| 36 | Louis Engeltjes | 31 | Servant | Laborer | Holland |
| 37 | A Bongaerts | 33 | Head | Farmer | Iowa |
| 38 | Nellie Bongaerts | 33 | Wife | — | Iowa |
| 39 | Nicolas Bongaerts | 7 | Son | — | Iowa |
| 40 | Genevieve Bongaerts | 5 | Daughter | — | Iowa |
| 41 | Muriel M Bongaerts | 1 | Daughter | — | Iowa |
| 42 | William Brock THIS PERSON | 46 | Head | Farmer | Holland |
| 43 | Hattie Brock | 43 | Wife | — | Holland |
| 44 | Marion Brock | 16 | Son | Laborer | Iowa |
| 45 | Harriet Brock | 14 | Daughter | — | Iowa |
| 46 | David W Brock | 12 | Son | — | Iowa |
| 47 | Albert Brock | 9 | Son | — | Iowa |
| 48 | John W Brock | 7 | Son | — | Iowa |
| 49 | Margaret Brock | 5 | Daughter | — | Iowa |
| 50 | Henrietta Van Driel | 15 | Niece | — | Minnesota |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)