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John Koch — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Ashland, Wisconsin
Our Model Tree links this John Koch across the 1920 and 1930 US Censuses in Ashland, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 6-person household.
Age 15
b. ~1915
Male
Son
Born: Wisconsin
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Ashland, Wisconsin |
| Surname | Koch |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Butternut Township |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| John Koch | Son | — | 15 | ~1915 |
| Albert Koch | Head | — | 45 | ~1885 |
| Luella Koch | Daughter | — | 20 | ~1910 |
| Marian Koch | Daughter | — | 10 | ~1920 |
| Anna Koch | Spouse | — | 43 | ~1887 |
| Herald Koch | Son | — | 17 | ~1913 |
Census Appearances
1920
Ashland, Wisconsin
Son, age 5
Ashland, Wisconsin · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Koch |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Ashland, Wisconsin
Son, age 15
Ashland, Wisconsin · implied b. ~1915 — 6 household members
| Surname | Koch |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Can Read/Write | Yes |
| 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 Koch across 2 US Census years (1920 and 1930) in Ashland, Wisconsin, using XGBoost record linkage.
Show:
This person
Anchor record
John Koch
Son · 1930 · age 15 · b. ~1915 · Wisconsin
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Sibling
Luella Koch
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marian Koch
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herald Koch
Sibling · 1930 · age 17
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
1930 US Federal Census — Ashland, Wisconsin
Open full size
1930 US Federal Census — Ashland, Wisconsin
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2560unit:0816)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Gust Borowski | 40 | Head | Farmer | Wisconsin |
| 52 | Manda Borowski | 27 | Wife | None | Wisconsin |
| 53 | Theresa Borowski | 8 | Daughter | None | Wisconsin |
| 54 | Ernest Borowski | 4 | Son | — | Wisconsin |
| 55 | George Ullmann | 63 | Head | Farmer | Wisconsin |
| 56 | Laura Ullmann | 55 | Wife | None | Wisconsin |
| 57 | Harry Klein | 12 | Grandson | None | Wisconsin |
| 58 | Vernon Klein | 10 | Grandson | None | Wisconsin |
| 59 | Royal Borowski | 12 | Grandson | None | Wisconsin |
| 60 | August Breitenfeld | 69 | Head | Farmer | Wisconsin |
| 61 | Erminda Breitenfeld | 59 | Wife | None | Wisconsin |
| 62 | Gustaf Breitenfeld | 40 | Son | Section | Wisconsin |
| 63 | Raymond Breitenfeld | 16 | Son | None | Wisconsin |
| 64 | Edith Breitenfeld | 1 | Grandson | — | Wisconsin |
| 65 | Marie Breitenfeld | 21 | Daughter | None | Wisconsin |
| 66 | Freda L Keily | 47 | Head | Farmer | Wisconsin |
| 67 | Edward G Keily | 19 | Son | None | Wisconsin |
| 68 | George L Keily | 17 | Son | None | Wisconsin |
| 69 | Allen A Keily | 13 | Son | None | Wisconsin |
| 70 | Mike Prioury | 42 | Head | Section | Poland |
| 71 | Anna Prioury | 39 | Wife | None | Poland |
| 72 | John J Prioury | 13 | Son | None | Wisconsin |
| 73 | Agnes Prioury | 12 | Daughter | None | Wisconsin |
| 74 | Elsie Prioury | 9 | Daughter | None | Wisconsin |
| 75 | Albert C. Koch | 45 | Head | Farmer | Wisconsin |
| 76 | Anna Koch | 43 | Wife | None | Wisconsin |
| 77 | Luella Koch | 20 | Daughter | None | Wisconsin |
| 78 | Herald Koch | 17 | Son | None | Wisconsin |
| 79 | John Koch THIS PERSON | 15 | Son | None | Wisconsin |
| 80 | Marian Koch | 10 | Daughter | None | Wisconsin |
| 81 | Simon Benisiewicz | 60 | Head | Farmer | Poland |
| 82 | Isabella Benisiewicz | 55 | Wife | None | Poland |
| 83 | Anthony Benisiewicz | 29 | Son | None | Poland |
| 84 | John Heuberger | 49 | Head | Farmer | Hungary |
| 85 | Mary Heuberger | 41 | Wife | None | Hungary |
| 86 | John Jr. Heuberger | 14 | Son | None | Illinois |
| 87 | Joseph Heuberger | 13 | Son | None | Illinois |
| 88 | Steven Heuberger | 12 | Son | None | Wisconsin |
| 89 | Edward Heuberger | 9 | Son | None | Wisconsin |
| 90 | Elizabeth Heuberger | 4 | Daughter | — | Wisconsin |
| 91 | William Borowski | 79 | Head | Farmer | Germany |
| 92 | Katherine Borowski | 78 | Wife | None | Germany |
| 93 | August Borowski | 86 | Brother | None | Germany |
| 94 | William Borowski | 40 | Son | Laborer | Wisconsin |
| 95 | Ole Peterson | 47 | Head | Farmer | Wisconsin |
| 96 | Clara C. Peterson | 41 | Wife | None | Illinois |
| 97 | Margaret Peterson | 15 | Daughter | None | Wisconsin |
| 98 | Carl E. Peterson | 10 | Son | None | Wisconsin |
| 99 | Ruth E. Peterson | 8 | Daughter | None | Wisconsin |
| 100 | William J. Peterson | 7 | Son | None | 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)