JK
John Knapp — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Emmons, North Dakota
Our Model Tree links this John Knapp across the 1910, 1920 and 1930 US Censuses in Emmons, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 9-person household.
Age 35
b. ~1885
Male
Head
Born: South Dakota
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Emmons, North Dakota |
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Additional Details | |
| Occupation | Farmer |
| Industry | Grain |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Ger |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Farmer |
| Township / Ward | Marie School District 13374 |
| Est. Birth Year | ~1885 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Otto Knapp | Son | — | 3 | ~1917 |
| John Knapp | Head | — | 35 | ~1885 |
| Rosa Knapp | Spouse | — | 31 | ~1889 |
| Edward Knapp | Son | — | 6 | ~1914 |
| John Knapp | Son | — | 9 | ~1911 |
| Amelia Knapp | Daughter | — | 10 | ~1910 |
| Sara Knapp | Daughter | — | 1 | ~1919 |
| Martha Knapp | Daughter | — | 12 | ~1908 |
| Emil Knapp | Son | — | 4 | ~1916 |
Census Appearances
1910
Emmons, North …
Head, age 26
Emmons, North Dakota · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Years Married | 4 |
| Father's Birthplace | Russia (und) |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | General Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1920
Emmons, North …
Head, age 35
Emmons, North Dakota · implied b. ~1885 — 9 household members
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | Grain |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Ger |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Emmons, North …
Other, age 45
Emmons, North Dakota · implied b. ~1885 — 35 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | John |
| Relationship to Head | R |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 21 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| 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 Emmons, North Dakota, using XGBoost record linkage.
Show:
This person
Anchor record
John Knapp
Head · 1920 · age 35 · b. ~1885 · North Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Emmons, North Dakota
Open full size
1920 US Federal Census — Emmons, North Dakota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1333unit:0955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Bernhart Bossert | 54 | Head | Farmer | Russia |
| 52 | Mary Bossert | 45 | Wife | None | Russia |
| 53 | John B Bossert | 24 | Son | Laborer | Russia |
| 54 | Adam B Bossert | 18 | Son | Laborer | Russia |
| 55 | Joe B Bossert | 16 | Son | Laborer | Russia |
| 56 | Clara B Bossert | 13 | Daughter | None | Russia |
| 57 | Bernhart B Bossert | 12 | Son | None | Russia |
| 58 | Mat B Bossert | 10 | Son | None | North Dakota |
| 59 | Clemins Rohrich | 32 | Head | Farmer | Russia |
| 60 | Gertrude Rohrich | 29 | Wife | None | Russia |
| 61 | Katie Rohrich | 7 | Daughter | None | North Dakota |
| 62 | John Rohrich | 6 | Daughter|Son | None | North Dakota |
| 63 | George Rohrich | 4 | Son | None | North Dakota |
| 64 | Adam Rohrich | 3 | Son | None | North Dakota |
| 65 | Clemmins Rohrich | 1 | Son | None | North Dakota |
| 66 | John Hoff | 28 | Head | Farmer | Russia |
| 67 | Liddie Hoff | 26 | Wife | None | Russia |
| 68 | Emel Hoff | 6 | Son | None | North Dakota |
| 69 | Albert Hoff | 4 | Son | None | North Dakota |
| 70 | Theodore Hoff | 1 | Son | None | North Dakota |
| 71 | Henry Shafer | 40 | Head | Farmer | Russia |
| 72 | Roselia Shafer | 35 | Wife | None | Russia |
| 73 | Cynelia Shafer | 17 | Daughter | None | North Dakota |
| 74 | Henry Shafer | 14 | Son | None | North Dakota |
| 75 | Martha Shafer | 12 | Daughter | None | North Dakota |
| 76 | Bertha Shafer | 10 | Daughter | None | North Dakota |
| 77 | Edward Shafer | 8 | Son | None | North Dakota |
| 78 | Theodore Shafer | 6 | Son | None | North Dakota |
| 79 | Emma Shafer | 2 | Daughter | None | North Dakota |
| 80 | John Knapp THIS PERSON | 35 | Head | Farmer | South Dakota |
| 81 | Rosa Knapp | 31 | Wife | None | Russia |
| 82 | Martha Knapp | 12 | Daughter | None | South Dakota |
| 83 | Amelia Knapp | 10 | Daughter | None | North Dakota |
| 84 | John Knapp | 9 | Son | None | North Dakota |
| 85 | Edward Knapp | 6 | Son | None | North Dakota |
| 86 | Emil Knapp | 4 | Son | None | North Dakota |
| 87 | Otto Knapp | 3 | Son | None | North Dakota |
| 88 | Sara Knapp | 1 | Daughter | None | North Dakota |
| 89 | Frederick Heid | 44 | Head | Farmer | Russia |
| 90 | Mary Heid | 41 | Wife | None | Russia |
| 91 | John Heid | 16 | Son | None | Russia |
| 92 | Emelia Heid | 11 | Daughter | None | North Dakota |
| 93 | Lizzie Heid | 11 | Daughter | None | North Dakota |
| 94 | Edward Heid | 9 | Son | None | North Dakota |
| 95 | Maselina Heid | 7 | Daughter | None | North Dakota |
| 96 | Hellena Heid | 5 | Daughter | None | North Dakota |
| 97 | Paulena Heid | 3 | Daughter | None | North Dakota |
| 98 | Mary Heid | 1 | Daughter | None | North Dakota |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)