JK
John Knapp — 1930 US Census Record
Model Tree available1930 United States Federal Census · Edmunds, South Dakota
Our Model Tree links this John Knapp across the 1910, 1920 and 1930 US Censuses in Edmunds, South Dakota (XGBoost, ~Confirmed), with identified parents Peter & Peter — first a son (b.~1904), then head of a 3-person household.
Age 26
b. ~1904
Male
Son
Born: South Dakota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Edmunds, South Dakota |
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Teamster |
| Industry | Dray Line |
| Class of Worker | 448V |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Teamster |
| Township / Ward | Roscoe City |
| Est. Birth Year | ~1904 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Matt Knapp | Son | — | 30 | ~1900 |
| John Knapp | Son | — | 26 | ~1904 |
| Peter Knapp | Head | — | 61 | ~1869 |
Census Appearances
1910
Edmunds, South …
Son, age 7
Edmunds, South Dakota · implied b. ~1903 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | No |
| Can Write | No |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1920
Edmunds, South …
Son, age 16
Edmunds, South Dakota · implied b. ~1904 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Edmunds, South …
Son, age 26
Edmunds, South Dakota · implied b. ~1904 — 3 household members
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Teamster |
| Industry | Dray Line |
| Class of Worker | 448V |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 Knapp across 3 US Census years (1910, 1920 and 1930) in Edmunds, South Dakota, using XGBoost record linkage. Identified parents: father Peter Knapp (~0.92 confidence) and father Peter Knapp (~0.92 confidence) and mother Caroline Knapp (~0.92 confidence) and mother Eva Knapp (~0.92 confidence) and mother Peter Knapp (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Knapp
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Peter Knapp
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Caroline Knapp
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Eva Knapp
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Peter Knapp
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Knapp
Son · 1930 · age 26 · b. ~1904 · South Dakota
★ You are viewing this record
Sibling
Matt Knapp
Sibling · 1930 · age 30
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 — Edmunds, South Dakota
Open full size
1930 US Federal Census — Edmunds, South Dakota
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2222unit:0946)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mildred Packernigg | 15 | Daughter | None | South Dakota |
| 52 | Eunice Packernigg | 9 | Daughter | None | South Dakota |
| 53 | Fred G. Grass | 35 | Head | Cashier | South Dakota |
| 54 | Theodosia Grass | 34 | Wife | None | South Dakota |
| 55 | Lester Grass | 7 | Son | None | South Dakota |
| 56 | Jean Grass | 5 | Daughter | None | South Dakota |
| 57 | Elma Wipp | 22 | Lodger | None | South Dakota |
| 58 | Birget Brabandt | 26 | Lodger | Teacher | North Dakota |
| 59 | Clarence Carlson | 45 | Head | Manager | Nebraska |
| 60 | Amelia Carlson | 46 | Wife | Proprietor | Wisconsin |
| 61 | Roy E. Kovitz | 39 | Head | Iceman | Iowa |
| 62 | Hattie Kovitz | 36 | Wife | None | Iowa |
| 63 | Lorence Kovitz | 3 | Son | None | South Dakota |
| 64 | Glenn Kovitz | 1 | Son | None | South Dakota |
| 65 | Theodore Bachman | 31 | Head | Proprietor | Russia |
| 66 | Cecilia Bachman | 28 | Wife | None | South Dakota |
| 67 | Magdalena Bachman | 9 | Daughter | None | South Dakota |
| 68 | Benoit Bachman | 8 | Son | None | South Dakota |
| 69 | Marian Bachman | 7 | Daughter | None | South Dakota |
| 70 | George Bachman | 4 | Son | None | South Dakota |
| 71 | Raymond Bachman | 2 | Son | None | South Dakota |
| 72 | Ina Bachman | 1 | Daughter | None | South Dakota |
| 73 | Archie Buckingham | 38 | Head | Laborer | England |
| 74 | Katherine Buckingham | 29 | Wife | None | Russia |
| 75 | Leona Buckingham | 7 | Daughter | None | South Dakota |
| 76 | Ethel Viola Buckingham | 6 | Daughter | None | South Dakota |
| 77 | Ernest A. Buckingham | 5 | Son | None | South Dakota |
| 78 | Lorain Buckingham | 4 | Daughter | None | South Dakota |
| 79 | Harleen R. Buckingham | 1 | Daughter | None | South Dakota |
| 80 | Meghisshelm | 73 | Head | None | New York |
| 81 | George Loebs | 25 | Head | Salesman | South Dakota |
| 82 | Hattie Loebs | 23 | Wife | None | South Dakota |
| 83 | Lalay Mcmeeky | 28 | Head | Proprietor | South Dakota |
| 84 | Frances Mcmeeky | 23 | Wife | None | South Dakota |
| 85 | Rosalie Mcmeeky | 2 | Daughter | None | South Dakota |
| 86 | Patricia Mcmeeky | 1 | Daughter | None | South Dakota |
| 87 | Betty Mcmeeky | 0 | Daughter | None | South Dakota |
| 88 | Freda Schick | 16 | Servant | Servant | South Dakota |
| 89 | Peter Mrs. Knapp | 61 | Head | None | Germany |
| 90 | Matt Knapp | 30 | Son | Laborer | South Dakota |
| 91 | John Knapp THIS PERSON | 26 | Son | Teamster | South Dakota |
| 92 | Angeline Heust | 60 | Head | None | Russia |
| 93 | Agatha Heust | 54 | Wife | None | Russia |
| 94 | Christian Huft | 57 | Head | Laborer | Russia |
| 95 | Elizabeth Huft | 56 | Wife | None | Russia |
| 96 | Arthur Huft | 14 | Son | None | South Dakota |
| 97 | Herbert Huft | 4 | Grandson | None | South Dakota |
| 98 | John Mantel | 28 | Head | None | South Dakota |
| 99 | Edward Mantel | 4 | Son | None | South Dakota |
| 100 | Herbert Meyers | 60 | Head | Proprietor | Michigan |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)