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James Cassidy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Fergus-County, Montana
Our Model Tree links this James Cassidy across the 1920, 1930 and 1940 US Censuses in Fergus-County, Montana (XGBoost, ~Confirmed), with identified parents Harvey & Florence — first a son (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fergus-County, Montana |
| Surname | Cassidy |
| Given Name | James L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | School District 33 Coffee Creek |
| 1935 Residence (County) | Fergus |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Farmer |
| Township / Ward | School District 33 Coffee Creek |
| 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 James | Age | Birth yr |
|---|---|---|---|---|
| Henry Cassidy | Head | — | 58 | ~1882 |
| Florence Cassidy | Spouse | — | 55 | ~1885 |
| James Cassidy | Son | — | 29 | ~1911 |
| Jerome Cassidy | Son | — | 24 | ~1916 |
Census Appearances
1920
Fergus, Montana
Son, age 9
Fergus, Montana · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Fergus, Montana
Son, age 19
Fergus, Montana · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Fergus-County, Montana
Son, age 29
Fergus-County, Montana · implied b. ~1911 — 4 household members
| Surname | Cassidy |
| Given Name | James L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | School District 33 Coffee Creek |
| 1935 Residence (County) | Fergus |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 James Cassidy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harvey Cassidy (~0.92 confidence) and mother Florence Cassidy (~0.92 confidence) and mother Gertrude Cassidy (~0.92 confidence) and father Henry Cassidy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harvey Cassidy
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Florence Cassidy
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Gertrude Cassidy
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Henry Cassidy
b. ~1892
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Cassidy
Son · 1940 · age 29 · b. ~1911 · Montana
★ You are viewing this record
Sibling
Jerome Cassidy
Sibling · 1940 · age 24
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
1940 US Federal Census — Fergus-County, Montana
Open full size
1940 US Federal Census — Fergus-County, Montana
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-02218-00504)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry D. Cassidy | 58 | Head | Farmer | Canada |
| 2 | Florence Cassidy | 55 | Wife | — | Canada |
| 3 | James L. Cassidy THIS PERSON | 29 | Son | Farmer | Montana |
| 4 | Jerome F. Cassidy | 24 | Son | Chain Man | Montana |
| 5 | Henry D. Creekmore | 62 | Head | Farmer | Missouri |
| 6 | Gwen Creekmore | 51 | Brother | — | Missouri |
| 7 | Joseph P. Leach | 32 | Head | Farmer | Montana |
| 8 | Agnes E. Leach | 30 | Wife | — | Montana |
| 9 | Gene Joseph Leach | 4 | Son | — | Montana |
| 10 | Gale Walter Leach | 4 | Son | — | Montana |
| 11 | Jo-Ann C. Leach | 0 | Daughter | — | Montana |
| 12 | Joseph Leach | 76 | Head | — | Canada |
| 13 | Ella May Leach | 66 | Wife | — | Illinois |
| 14 | Noah Boone | 63 | Head | Farmer | Indiana |
| 15 | Louise A. Boone | 58 | Wife | — | Iowa |
| 16 | Wm. D. Mackenzie | 39 | Head | Farmer | Wisconsin |
| 17 | Alice E. Mackenzie | 37 | Wife | — | South Dakota |
| 18 | Donnabell Mackenzie | 9 | Daughter | — | Montana |
| 19 | Marlene June Mackenzie | 4 | Daughter | — | Montana |
| 20 | Herman Holschuh | 21 | Hired hand | Farm Hand | South Dakota |
| 21 | Thomas H. Mcintosh | 27 | Head | Farmer | Montana |
| 22 | Ida Belle Mcintosh | 28 | Wife | — | Kansas |
| 23 | Tommy Leroy Mcintosh | 6 | Son | — | Montana |
| 24 | Patricia Anne Mcintosh | 5 | Daughter | — | Montana |
| 25 | Ronald Duane Mcintosh | 0 | Son | — | Montana |
| 26 | Julius Bechard | 48 | Head | Farmer | Canada |
| 27 | Florence Irene Bechard | 43 | Wife | — | Kansas |
| 28 | Alice Mae Bechard | 7 | Daughter | — | Montana |
| 29 | Grace Janet Bechard | 3 | Daughter | — | Montana |
| 30 | George O. Luhd | 47 | Hired hand | Farm Hand | Nebraska |
| 31 | James Maitus | 46 | Lodger | Labor | Missouri |
| 32 | John J. Mcinerney | 58 | Head | — | Canada-English |
| 33 | Helen Mcinerney | 42 | Wife | — | Scotland |
| 34 | H. William Mcinerney | 16 | Son | Carrier | Montana |
| 35 | Mary E. Mcinerney | 15 | Daughter | — | Montana |
| 36 | Betty Lou Mcinerney | 10 | Daughter | — | Montana |
Pedigree Summary
James + 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 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)