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James Kirby — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bingham-County, Idaho
Our Model Tree links this James Kirby across the 1920, 1930 and 1940 US Censuses in Bingham-County, Idaho (XGBoost, ~Confirmed), with identified parents Agnes — first a son (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Son
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bingham-County, Idaho |
| Surname | Kirby |
| Given Name | James J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Blackfoot |
| 1935 Residence (County) | Bingham |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Butter maker |
| Industry | Creamery |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 196 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Butter Maker |
| Township / Ward | Blackfoot |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Kirby | Son | — | 29 | ~1911 |
| Floella Kirby | Daughter | — | 20 | ~1920 |
| Agnes Kirby | Head | — | 57 | ~1883 |
Census Appearances
1920
Bingham, Idaho
Son, age 9
Bingham, Idaho · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | James Robertson |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1913 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Bingham, Idaho
Son, age 19
Bingham, Idaho · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1913 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Creamery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Bingham-County, Idaho
Son, age 29
Bingham-County, Idaho · implied b. ~1911 — 3 household members
| Surname | Kirby |
| Given Name | James J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Blackfoot |
| 1935 Residence (County) | Bingham |
| Naturalization Status | First papers filed |
| Occupation | Butter maker |
| Industry | Creamery |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 196 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Kirby across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Agnes Kirby (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Agnes Kirby
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Kirby
Son · 1940 · age 29 · b. ~1911 · Idaho
★ You are viewing this record
Sibling
Floella Kirby
Sibling · 1940 · age 20
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 — Bingham-County, Idaho
Open full size
1940 US Federal Census — Bingham-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00739-00217)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Noel D. Rowe | 22 | head | Baker | Missouri |
| 2 | Lily Rowe | 18 | wife | Apprentice Baker | Idaho |
| 3 | Hilda Wray | 34 | head | Cook | Utah |
| 4 | Dorothy Wray | 14 | daughter | — | Idaho |
| 5 | Kim Wray | 12 | son | — | Idaho |
| 6 | Egon O. Lanfacht | 58 | head | Baker | Germany |
| 7 | Malgarie Lanfacht | 39 | wife | Housewife | Germany |
| 8 | Catherine Lanfacht | 19 | daughter | Clerk | Idaho |
| 9 | Ford Lanfacht | 18 | son | — | Idaho |
| 10 | Maxine Lanfacht | 16 | daughter | — | Idaho |
| 11 | Helen Lanfacht | 13 | daughter | — | Idaho |
| 12 | Egon Lanfacht | 4 | son | — | Idaho |
| 13 | Harry V. D. White | 56 | head | Operating | Idaho |
| 14 | Maurine White | 48 | wife | Housewife | Massachusetts |
| 15 | Lavina E. White | 19 | son | Officer Asst | Idaho |
| 16 | Thomas B. Smith | 36 | head | Salesman | Idaho |
| 17 | Doris A. Smith | 36 | wife | Housewife | Idaho |
| 18 | Diane L. Smith | 5 | daughter | — | Idaho |
| 19 | Thomas B. Smith | 1 | son | — | Idaho |
| 20 | Here Ends Block 108 And Begins Block 107 | None | — | — | — |
| 21 | Spencer A. Cajun | 32 | head | Mechanic | Idaho |
| 22 | Ruby Cajun | 24 | wife | Housewife | Idaho |
| 23 | Sherall Joyn Cajun | 1 | daughter | — | Idaho |
| 24 | Don Mixer | 26 | head | Service Man | Canada |
| 25 | Ella Mixer | 27 | wife | Housewife | Utah |
| 26 | Jerry Mixer | 1 | son | — | Utah |
| 27 | Donita Mixer | 4 | daughter | — | Utah |
| 28 | Agnes Kirby | 57 | head | Janitor Work | Scotland |
| 29 | James J. Kirby THIS PERSON | 29 | son | Butter Maker | Scotland |
| 30 | Floella M. Kirby | 20 | daughter | Butter Wrapper | Blackfoot |
| 31 | Francis Merrick | 74 | head | Housewife | Utah |
| 32 | Dale Imakush | 22 | head | Cook | Idaho |
| 33 | Myrtle Imakush | 20 | wife | Waitress | Idaho |
| 34 | Virgil H. Imakush | 3 | son | — | Idaho |
| 35 | Victor D. Imakush | 1 | son | — | Idaho |
| 36 | J. B. Plant | 76 | head | Carpenter | Indiana |
| 37 | Clara L. Plant | 67 | wife | Housewife | Indiana |
| 38 | Kendall Stewart | 21 | grandson | Potato Sorter | Idaho |
| 39 | Edward L. Kingsford | 64 | head | Bridge Carpenter | Idaho |
| 40 | Ethel Kingsford | 60 | wife | Housewife | Idaho |
Pedigree Summary
James + 1 sibling
Gen 1 · 1 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)