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John Arnold — 1940 US Census Record
Model Tree available1940 United States Federal Census · Blaine-County, Montana
Our Model Tree links this John Arnold across the 1920, 1930 and 1940 US Censuses in Blaine-County, Montana (XGBoost, ~Confirmed), with identified parents Alice & Godfrey — first a head (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Blaine-County, Montana |
| Surname | Arnold |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Blaine |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 84 |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Montana |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Farmer |
| Township / Ward | Harlem |
| 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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Josephine Arnold | Daughter | — | 5 | ~1935 |
| John Arnold | Head | — | 29 | ~1911 |
| John Arnold | Son | — | 4 | ~1936 |
| Kathryn Arnold | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Blaine, Montana
Son, age 9
Blaine, Montana · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Blaine, Montana
Son, age 19
Blaine, Montana · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm Labor |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Blaine-County, Montana
Head, age 29
Blaine-County, Montana · implied b. ~1911 — 4 household members
| Surname | Arnold |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Blaine |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 84 |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Montana |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Arnold across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Alice Arnold (~0.92 confidence) and father Godfrey Arnold (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Alice Arnold
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Godfrey Arnold
b. ~1871
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Arnold
Head · 1940 · age 29 · b. ~1911 · Montana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Blaine-County, Montana
Open full size
1940 US Federal Census — Blaine-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02212-00710)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucille E. Peterson | 16 | Daughter | Clerical Work In School Office | Montana |
| 2 | Melva R. Peterson | 12 | Daughter | — | Montana |
| 3 | Blanche A. Peterson | 10 | Daughter | — | Montana |
| 4 | Claude A. Peterson | 7 | Son | — | Montana |
| 5 | Ruth Ann Peterson | 4 | Daughter | — | Montana |
| 6 | Lorraine N. Peterson | 2 | Daughter | — | Montana |
| 7 | Ray A. Colegrove | 63 | Head | Farmer | Michigan |
| 8 | John B. Arnold THIS PERSON | 29 | Head | Farmer | Missouri |
| 9 | Kathryn V. Arnold | 28 | Wife | — | Iowa |
| 10 | Josephine V. Arnold | 5 | Daughter | — | Montana |
| 11 | John B. Arnold | 4 | Son | — | Montana |
| 12 | Carl Kuehni | 40 | Head | Farmer | Switzerland |
| 13 | B. Pearl Kuehni | 31 | Wife | — | Wisconsin |
| 14 | Carl C. Kuehni | 6 | Daughter | — | Wisconsin |
| 15 | Jacob H. Hellman | 51 | Head | Farmer | Nebraska |
| 16 | Catherine A. Hellman | 43 | Wife | — | South Dakota |
| 17 | Raymond J. Hellman | 26 | Son | Laborer | North Dakota |
| 18 | Julius H. Hellman | 24 | Son | Laborer | Colorado |
| 19 | Vernon H. Hellman | 18 | Son | Laborer | Montana |
| 20 | Wilfrid H. Hellman | 17 | Son | — | Montana |
| 21 | Mel P. Hellman | 15 | Son | — | Montana |
| 22 | Kenny G. Hellman | 12 | Son | — | Montana |
| 23 | Theresa A. Hellman | 11 | Daughter | — | Montana |
| 24 | Melvin J. Hellman | 9 | Son | — | Montana |
| 25 | Marie E. Hellman | 6 | Daughter | — | Montana |
| 26 | Dorothy J. Hellman | 3 | Daughter | — | Montana |
| 27 | Irvin Hellman | 1 | Son | — | Montana |
| 28 | Eli C. Gibbs | 35 | Head | Farmer | Nebraska |
| 29 | Ruth H. Gibbs | 29 | Wife | — | Montana |
| 30 | Kenneth R. Gibbs | 15 | Son | — | Montana |
| 31 | Shirley M. Gibbs | 5 | Daughter | — | Montana |
| 32 | Peter R. Gollinski | 57 | Head | Laborer | Poland |
| 33 | Neal A. Mclean | 41 | Head | Farm Manager | North Dakota |
| 34 | Maude E. Mclean | 37 | Wife | — | Minnesota |
| 35 | Yvonne A. Mclean | 14 | Daughter | — | North Dakota |
| 36 | Lois E. Mclean | 11 | Daughter | — | North Dakota |
| 37 | Nina H. A. Mclean | 1 | Daughter | — | North Dakota |
| 38 | Henry E. Miner | 20 | Head | Laborer | Nebraska |
| 39 | James S. Gold | 22 | Partner | Laborer | Montana |
| 40 | Rudolph Horning | 54 | Head | Farmer | Russia |
Pedigree Summary
John
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 1940 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)