JL
John Larson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Fergus, Montana
Our Model Tree links this John Larson across the 1910, 1920 and 1930 US Censuses in Fergus, Montana (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1911), then head of a 4-person household.
Age 19
b. ~1911
Male
Son
Born: Montana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Fergus, Montana |
| Surname | Larson |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Additional Details | |
| Occupation | Laborer |
| Industry | Cement Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Laborer |
| Township / Ward | Lewistown City |
| Est. Birth Year | ~1911 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Larson | Head | — | 55 | ~1875 |
| Leonard Larson | Son | — | 21 | ~1909 |
| John Larson | Son | — | 19 | ~1911 |
| Elizabeth Larson | Spouse | — | 53 | ~1877 |
Census Appearances
1910
Fergus, Montana
Son, age
Fergus, Montana · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | none |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1920
Fergus, Montana
Son, age 10
Fergus, Montana · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Fergus, Montana
Son, age 19
Fergus, Montana · implied b. ~1911 — 4 household members
| Surname | Larson |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Cement Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Larson across 3 US Census years (1910, 1920 and 1930) in Fergus, Montana, using XGBoost record linkage. Identified parents: father John Larson (~0.92 confidence) and father John Larson (~0.92 confidence) and mother Elizabeth Larson (~0.92 confidence) and mother Elizabeth Larson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Larson
b. ~1870
Source father
● Household
· direct · ~0.92
Father
John Larson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Larson
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Larson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Larson
Son · 1930 · age 19 · b. ~1911 · Montana
★ You are viewing this record
Sibling
Leonard Larson
Sibling · 1930 · 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
1930 US Federal Census — Fergus, Montana
Open full size
1930 US Federal Census — Fergus, Montana
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1255unit:0721)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Larson | 55 | Head | Carpenter | Norway |
| 52 | Elizabeth Larson | 53 | Wife | — | Norway |
| 53 | Leonard Larson | 21 | Son | Mechanic | Montana |
| 54 | John Jr. Larson THIS PERSON | 19 | Son | Laborer | Montana |
| 55 | George Wilson | 47 | Head | Laborer | Kansas |
| 56 | Lydia Wilson | 32 | Wife | — | Montana |
| 57 | Marie Wilson | 10 | Daughter | — | S. Dakota |
| 58 | Dallas Yeager | 52 | Head | — | Germany |
| 59 | Josephine Yeager | 52 | Wife | — | Germany |
| 60 | Frank Mathar | 70 | Head | Carpenter | Wisconsin |
| 61 | Louise Mathar | 54 | Wife | — | Germany |
| 62 | Lawrence Mathar | 9 | Son | — | Montana |
| 63 | David Mathar | 3 | Son | — | Washington |
| 64 | Jerome Tiggin | 73 | Lodger | Laborer | Kansas |
| 65 | — | None | — | — | — |
| 66 | — | None | — | — | — |
| 67 | — | None | — | — | — |
| 68 | — | None | — | — | — |
| 69 | — | None | — | — | — |
| 70 | — | None | — | — | — |
| 71 | Lillian Marvin | 37 | Head | Manager | Montana |
| 72 | Inna S. Marvin | 64 | Mother | — | Wales |
| 73 | Lucy Thompson | 24 | Lodger | Waitress | Washington |
| 74 | Edwin Mcgovern | 53 | Lodger | Painter | Nebraska |
| 75 | Jennie Mcgovern | 52 | Lodger | — | Iowa |
| 76 | Martha Franks | 52 | Lodger | Proprietress | Germany |
| 77 | Thomas Cunningham | 75 | Lodger | Laborer | Iowa |
| 78 | John Christie | 65 | Lodger | Carpenter | Scotland |
| 79 | John Anderson | 53 | Lodger | Laborer | Denmark |
| 80 | — | None | — | — | — |
| 81 | Nellie Kearney | 61 | Head | — | Unknown |
| 82 | Margaret Evans | 71 | Head | — | Montana |
| 83 | Adelle Smith | 83 | Mother | — | Missouri |
| 84 | Logan Burke | 29 | Head | — | Iowa |
| 85 | Lloyd Burke | 26 | Wife | — | Iowa |
| 86 | Alberta Burke | 9 | Daughter | — | Nebraska |
| 87 | Harry Snell | 32 | Head | — | Iowa |
| 88 | Myra Snell | 31 | Wife | Painter | Nebraska |
| 89 | George Cole | 8 | Step-son | — | Montana |
| 90 | Ray Cole | 5 | Step-son | — | Montana |
| 91 | Fay Cole | 3 | Step-son | — | California |
| 92 | Earl Burke | 25 | Head | — | Nebraska |
| 93 | Rose Burke | 22 | Wife | Mechanic | Indiana |
| 94 | Mary Burke | 3 | Daughter | — | Nebraska |
| 95 | Hannah Fowler | 41 | Head | — | Norway |
| 96 | Donald Fowler | 51 | Head | — | Scotland |
| 97 | Levi L. Clouse | 63 | Head | Laborer | Iowa |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
Pedigree Summary
John + 1 sibling
Gen 1 · 4 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)