JN
John Nicholson — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Codington, South Dakota
Our Model Tree links this John Nicholson across the 1900, 1910 and 1920 US Censuses in Codington, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1856), then head of a 5-person household.
Age 64
b. ~1856
Male
Head
Born: New York
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Codington, South Dakota |
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | County Judge |
| Industry | County |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | County Judge |
| Township / Ward | Watertown City |
| Est. Birth Year | ~1856 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jack Mueller | Other | — | 4 | ~1916 |
| Jane Nicholson | Spouse | — | 58 | ~1862 |
| John Nicholson | Head | — | 64 | ~1856 |
| Doris Mueller | Daughter | — | 27 | ~1893 |
| James Mueller | Other | — | 2 | ~1918 |
Census Appearances
1900
Codington, South …
Head, age 47
Codington, South Dakota · implied b. ~1853 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | New York |
| Birth Month | Feb |
| Birth Year | 1853 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Lawyer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1910
Codington, South …
Head, age 54
Codington, South Dakota · implied b. ~1856 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | New York |
| Years Married | 26 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Lawyer |
| Industry | Office |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1920
Codington, South …
Head, age 64
Codington, South Dakota · implied b. ~1856 — 5 household members
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | County Judge |
| Industry | County |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Nicholson across 3 US Census years (1900, 1910 and 1920) in Codington, South Dakota, using XGBoost record linkage.
Show:
This person
Anchor record
John Nicholson
Head · 1920 · age 64 · b. ~1856 · South 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 — Codington, South Dakota
Open full size
1920 US Federal Census — Codington, South Dakota
Page Contents
48 people indexed on this census page (ia:1920:14thcensusofpopu1718unit:0355)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cecelia Anderson | 14 | Daughter | — | Minnesota |
| 2 | James B Mclaughlin | 45 | Head | Mgr. Transfer | Iowa |
| 3 | Catherine B Mclaughlin | 45 | Wife | — | Iowa |
| 4 | James B Mclaughlin | 15 | Son | — | Iowa |
| 5 | Duane Mclaughlin | 14 | Son | — | Iowa |
| 6 | Herbert E Mclaughlin | 8 | Son | — | South Dakota |
| 7 | Yvonne Mclaughlin | 16 | Neice | — | Iowa |
| 8 | Micheal Mundstock | 48 | Head | Carpenter | Wisconsin |
| 9 | Annie Mundstock | 42 | Wife | — | Wisconsin |
| 10 | Agnes Mundstock | 16 | Daughter | — | South Dakota |
| 11 | Edwin Mundstock | 12 | Son | — | South Dakota |
| 12 | Lucile Mundstock | 10 | Daughter | — | South Dakota |
| 13 | Edward A Doyle | 54 | Head | Locomotive Engineer | New York |
| 14 | Helen Doyle | 46 | Wife | — | New York |
| 15 | Charles E Tenney | 46 | Head | City Salesman | Minnesota |
| 16 | Inga Tenney | 36 | Wife | — | South Dakota |
| 17 | Letha Tenney | 12 | Daughter | — | South Dakota |
| 18 | Alice Tenney | 9 | Daughter | — | South Dakota |
| 19 | William Tenney | 7 | Son | — | South Dakota |
| 20 | Maxine Tenney | 1 | Daughter | — | South Dakota |
| 21 | Neal J Falvey | 36 | Head | Farmer | South Dakota |
| 22 | Mary Falvey | 30 | Wife | — | South Dakota |
| 23 | Melbourne Falvey | 5 | Son | — | South Dakota |
| 24 | Gordon Falvey | 2 | Son | — | South Dakota |
| 25 | Stanley W Allen | 38 | Head | Veterinary | Iowa |
| 26 | Ada Allen | 34 | Wife | — | South Dakota |
| 27 | Elinor Allen | 6 | Daughter | — | South Dakota |
| 28 | John Nicholson THIS PERSON | 64 | Head | County Judge | New York |
| 29 | Jane Nicholson | 58 | Wife | — | New York |
| 30 | Doris Mueller | 27 | Daughter | — | South Dakota |
| 31 | Jack Mueller | 4 | Grandson | — | South Dakota |
| 32 | James Mueller | 2 | Grandson | — | South Dakota |
| 33 | Ray Delameter | 49 | Head | Travel Salesman | Michigan |
| 34 | Alice Delameter | 44 | Wife | — | Massachusetts |
| 35 | Esther Delameter | 22 | Daughter | Saleslady | South Dakota |
| 36 | H. Glee Tarbell | 26 | Head | Dentist | South Dakota |
| 37 | Teresa Tarbell | 28 | Wife | Art Teacher | South Dakota |
| 38 | Harriet Miller | 22 | Roomer | Teacher | Minnesota |
| 39 | Elsie Peckham | 28 | Roomer | Teacher | Minnesota |
| 40 | Alma Swett | 28 | Roomer | Teacher | South Dakota |
| 41 | Irving M Williamson | 25 | Head | City Salesman | South Dakota |
| 42 | Ethel Williamson | 22 | Wife | — | South Dakota |
| 45 | Andrew Smedley | 66 | Head | Plumber | Wisconsin |
| 46 | Myra Smedley | 47 | Wife | — | Minnesota |
| 47 | Albert Smedley | 14 | Son | — | South Dakota |
| 48 | William Tilleau | 9 | Nephew | — | South Dakota |
| 49 | Mary Goddard | 31 | Servant | Housekeeper | Minnesota |
| 50 | Ray Goddard | 13 | Roomer | — | Iowa |
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)