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John Brock — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Rock, Wisconsin
Our Model Tree links this John Brock across the 1930 and 1940 US Censuses in Rock, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 6-person household.
Age 59
b. ~1871
Male
Head
Born: Wisconsin
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Rock, Wisconsin |
| Surname | Brock |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Wisconsin |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Farmer |
| Township / Ward | Fulton Township |
| Est. Birth Year | ~1871 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Katherine Brock | Spouse | — | 57 | ~1873 |
| Lydia Brock | Daughter | — | 31 | ~1899 |
| Kenneth Brock | Son | — | 19 | ~1911 |
| Arnold Brock | Son | — | 22 | ~1908 |
| Herbert Brock | Son | — | 29 | ~1901 |
| John Brock | Head | — | 59 | ~1871 |
Census Appearances
1930
Rock, Wisconsin
Head, age 59
Rock, Wisconsin · implied b. ~1871 — 6 household members
| Surname | Brock |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Wisconsin |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Rock-County, Wisconsin
Head, age 69
Rock-County, Wisconsin · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Briek |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Fulton Township |
| 1935 Residence (County) | Rock |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Brock
Head · 1930 · age 59 · b. ~1871 · Wisconsin
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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 — Rock, Wisconsin
Open full size
1930 US Federal Census — Rock, Wisconsin
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2610unit:0655)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Arthur F Lusty | 55 | Boarder | — | Germany |
| 52 | Herman J Lusty | 55 | Head | Farmer | Wisconsin |
| 53 | Martha E Lusty | 52 | Wife | — | Germany |
| 54 | Harold F Lusty | 32 | Son | Laborer | Wisconsin |
| 55 | Elsie L Lusty | 27 | Daughter | Hand Sealer | Wisconsin |
| 56 | Mabel E Lusty | 20 | Daughter | Hand Sealer | Wisconsin |
| 57 | Nancy H Lusty | 14 | Son | — | Wisconsin |
| 58 | Minnie S Born | 66 | Sister-in-law | — | Germany |
| 59 | William H Onsgard | 65 | Head | Farmer | Wisconsin |
| 60 | Minnie A Onsgard | 64 | Wife | — | Wisconsin |
| 61 | William H Onsgard | 28 | Son | Laborer | Wisconsin |
| 62 | Fred A Onsgard | 26 | Son | Laborer | Wisconsin |
| 63 | John J Carlson | 59 | Head | Farmer | Sweden |
| 64 | Ida M Carlson | 57 | Wife | — | Wisconsin |
| 65 | Eleanor R Carlson | 21 | Daughter | — | Wisconsin |
| 66 | Harry M Carlson | 15 | Son | — | Wisconsin |
| 67 | Howard E Carlson | 12 | Son | — | Wisconsin |
| 68 | Clara E Carlson | 10 | Daughter | — | Wisconsin |
| 69 | John R Brock THIS PERSON | 59 | Head | Farmer | Wisconsin |
| 70 | Katherine J Brock | 57 | Wife | — | Germany |
| 71 | Lydia M Brock | 31 | Daughter | Polisher | Wisconsin |
| 72 | Herbert E Brock | 29 | Son | Laborer | Wisconsin |
| 73 | Arnold A Brock | 22 | Son | Laborer | Wisconsin |
| 74 | Kenneth G Brock | 19 | Son | Laborer | Wisconsin |
| 75 | Charles G Brown | 71 | Head | Farmer | Germany |
| 76 | Charles J Brown | 22 | Son | Laborer | Wisconsin |
| 77 | Ella E Brown | 20 | Daughter | — | Wisconsin |
| 78 | Arthur W Brown | 34 | Head | Laborer | Wisconsin |
| 79 | Catherine H Brown | 28 | Wife | — | Wisconsin |
| 80 | Jean M Brown | 9 | Daughter | — | Wisconsin |
| 81 | Henry G Pierce | 44 | Head | Farmer | Wisconsin |
| 82 | Mabel M Pierce | 42 | Wife | — | Wisconsin |
| 83 | Agnes Larson | 25 | Rural School | Teacher | Wisconsin |
| 84 | Herman J Maas | 49 | Head | Farmer | Germany |
| 85 | Louise B Maas | 45 | Wife | — | Wisconsin |
| 86 | Albert E Maas | 20 | Son | Salesman | Wisconsin |
| 87 | Elmer H Maas | 17 | Son | — | Wisconsin |
| 88 | Hilda M Maas | 15 | Daughter | — | Wisconsin |
| 89 | Freda L Maas | 13 | Daughter | — | Wisconsin |
| 90 | Katherine Siebel | 67 | Mother-in-law | — | Germany |
| 91 | William C Lukas | 27 | Nephew | Laborer | Wisconsin |
| 92 | William G Pierce | 78 | Head | Farmer | New York |
| 93 | John J Hattrem | 42 | Head | Laborer | Norway |
| 94 | Dora J Hattrem | 34 | Wife | — | Wisconsin |
| 95 | Fern L Hattrem | 14 | Daughter | — | Wisconsin |
| 96 | Georgina L Hattrem | 12 | Daughter | — | Wisconsin |
| 97 | Margaret A Hattrem | 10 | Daughter | — | Wisconsin |
| 98 | Ruth M Hattrem | 8 | Daughter | — | Wisconsin |
| 99 | Alice E Hattrem | 5 | Daughter | — | Wisconsin |
| 100 | John J Jr Hattrem | 3 | Son | — | Wisconsin |
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)