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Mary Larson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Tripp, South Dakota
Our Model Tree links this Mary Larson across the 1920, 1930 and 1940 US Censuses in Tripp, South Dakota (XGBoost, ~Confirmed), with identified parents John & Rosa — first a son (b.~1904), then head of a 7-person household.
Age 16
b. ~1904
Male
Son
Born: Iowa
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Tripp, South Dakota |
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Pleasant View Township |
| 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.
7 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Larson | Daughter | — | 11 | ~1909 |
| John Larson | Head | — | 52 | ~1868 |
| Christopher Larson | Other | — | 88 | ~1832 |
| Mary Larson | Son | — | 16 | ~1904 |
| Joseph Larson | Son | — | 24 | ~1896 |
| James Larson | Son | — | 21 | ~1899 |
| Rosa Larson | Spouse | — | 48 | ~1872 |
Census Appearances
1920
Tripp, South …
Son, age 16
Tripp, South Dakota · implied b. ~1904 — 7 household members
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Tripp, South …
Head, age 26
Tripp, South Dakota · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Mark W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 20 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Tripp-County, South …
Head, age 36
Tripp-County, South Dakota · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Mark W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Colome Twp |
| 1935 Residence (County) | Tripp |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mary Larson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Larson (~0.92 confidence) and mother Rosa Larson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Larson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Rosa Larson
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Larson
Son · 1920 · age 16 · b. ~1904 · South Dakota
★ You are viewing this record
Sibling
Helen Larson
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Larson
Sibling · 1920 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Larson
Sibling · 1920 · age 21
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
1920 US Federal Census — Tripp, South Dakota
Open full size
1920 US Federal Census — Tripp, South Dakota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1723unit:0954)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John F Larson | 52 | Head | Farmer | Sweden |
| 2 | Rosa P Larson | 48 | Wife | — | Illinois |
| 3 | Joseph R Larson | 24 | Son | Farmer | Iowa |
| 4 | James R Larson | 21 | Son | Bookkeeper | Iowa |
| 5 | Mary Larson THIS PERSON | 16 | Son | — | Iowa |
| 6 | Helen Larson | 11 | Daughter | — | Nebraska |
| 7 | Christopher Larson | 88 | Father | — | Sweden |
| 8 | Arthur Nussmeyer | 45 | Head | Farmer | Illinois |
| 9 | Mathilda Nussmeyer | 40 | Wife | — | Illinois |
| 10 | Lydia Nussmeyer | 20 | Daughter | — | Nebraska |
| 11 | Margaret Nussmeyer | 8 | Daughter | — | Nebraska |
| 12 | Chris C. Manger | 46 | Head | Farmer | Nebraska |
| 13 | Lloyd L. Manger | 7 | Son | — | Nebraska |
| 14 | Lela M. Manger | 5 | Son | — | Nebraska |
| 15 | Wilma M. Manger | 1 | Daughter | — | Nebraska |
| 16 | Jens S. Larson | 29 | Brother | Manager | Nebraska |
| 17 | Chris J. Larson | 21 | Brother | Laborer | Nebraska |
| 18 | John Koester | 41 | Head | Farmer | Germany |
| 19 | Minnie L. Koester | 33 | Wife | — | Nebraska |
| 20 | Mabel A. Koester | 14 | Daughter | — | Nebraska |
| 21 | Harry H. Koester | 13 | Son | — | Nebraska |
| 22 | Robert A. Koester | 12 | Son | — | Nebraska |
| 23 | Hilda M. Koester | 7 | Daughter | — | South Dakota |
| 24 | Joseph Rohde | 37 | Head | Laborer | Nebraska |
| 25 | Bridget L. Rohde | 32 | Wife | — | Nebraska |
| 26 | Agnes Rohde | 4 | Daughter | — | Nebraska |
| 27 | Walter Rohde | 1 | Son | — | Nebraska |
| 28 | John London | 22 | Brother-in-law | Laborer | Nebraska |
| 29 | Edward R. Auwerda | 28 | Head | Renter | Iowa |
| 30 | Alice M. Auwerda | 29 | Wife | — | Nebraska |
| 31 | Blanche E. Auwerda | 8 | Daughter | — | Nebraska |
| 32 | Claude E. Auwerda | 7 | Son | — | Nebraska |
| 33 | John D. Auwerda | 5 | Son | — | Nebraska |
| 34 | Elwood M. Auwerda | 1 | Son | — | South Dakota |
| 35 | Louis Kohler | 36 | Head | Farmer | Iowa |
| 36 | Katrina W. Kohler | 34 | Wife | — | Nebraska |
| 37 | Rudolph Kohler | 13 | Son | — | Nebraska |
| 38 | Arthur Kohler | 11 | Son | — | Nebraska |
| 39 | Lillian Kohler | 9 | Daughter | — | Nebraska |
| 40 | Ray Kohler | 8 | Son | — | Nebraska |
| 41 | Alice Kohler | 6 | Daughter | — | Nebraska |
| 42 | Verna Kohler | 4 | Daughter | — | Nebraska |
| 43 | John H. Scott | 42 | Head | Farmer | Minnesota |
| 44 | Lottie A. Scott | 39 | Wife | — | Nebraska |
| 45 | William H. Scott | 21 | Son | Farmer | Nebraska |
| 46 | Clarence L. Scott | 17 | Son | — | Nebraska |
| 47 | Violet V. Scott | 9 | Daughter | — | Nebraska |
| 48 | Emma E. Scott | 7 | Daughter | — | Nebraska |
| 49 | Bert M. Scott | 4 | Son | — | Nebraska |
| 50 | Celestine F. Scott | 1 | Daughter | — | Nebraska |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)