JB
James Buchanan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Huerfano-County, Colorado
Our Model Tree links this James Buchanan across the 1910, 1920, 1930 and 1940 US Censuses in Huerfano-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 2-person household.
Age 78
b. ~1862
Male
Head
Born: Scotland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Huerfano-County, Colorado |
| Surname | Buchanan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Walsenburg City |
| 1935 Residence (County) | Huerfano |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Walsenburg City |
| Est. Birth Year | ~1862 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Buchanan | Head | — | 78 | ~1862 |
| Jean Buchanan | Daughter | — | 51 | ~1889 |
Census Appearances
1910
Huerfano, Colorado
Head, age 48
Huerfano, Colorado · implied b. ~1862 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Scotland |
| Years Married | 23 |
| Year of Immigration | 1884 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Big 4 Coal Co |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1920
Huerfano, Colorado
Head, age 57
Huerfano, Colorado · implied b. ~1863 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Year of Naturalization | Un |
| Birthplace (normalized) | scotland |
1930
Huerfano, Colorado
Head, age 68
Huerfano, Colorado · implied b. ~1862 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1879 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Huerfano-County, Colorado
Head, age 78
Huerfano-County, Colorado · implied b. ~1862 — 2 household members
| Surname | Buchanan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Walsenburg City |
| 1935 Residence (County) | Huerfano |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 3 |
| 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 Buchanan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Buchanan
Head · 1940 · age 78 · b. ~1862 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Huerfano-County, Colorado
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1940 US Federal Census — Huerfano-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00464-00676)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Sammons | 2 | Son | — | Colorado |
| 42 | Barbara Sammons | 0 | Daughter | — | Colorado |
| 43 | Walter Price | 35 | Head | — | Colorado |
| 44 | Stella Price | 39 | Wife | Operator | Colorado |
| 45 | Walter Jr Price | 8 | Son | — | Colorado |
| 46 | Mary Price | 60 | Head | — | Wales |
| 47 | Dave Price | 31 | Son | Waiter | Colorado |
| 48 | Robert Buchanan | 47 | Head | Mechanic | Colorado |
| 49 | Nell R Buchanan | 47 | Wife | — | Michigan |
| 50 | Bonita Buchanan | 22 | Daughter | — | Colorado |
| 51 | Evelyn Buchanan | 19 | Daughter | — | Colorado |
| 52 | Son Walter | 24 | Son | Mechanic Helper | Colorado |
| 53 | Dorothy Walter | 22 | Dau in law | — | Colorado |
| 54 | Walter Jr Walter | 1 | Grand Son | — | Colorado |
| 55 | John Jenkins | 77 | Father in law | Caretaker | England |
| 56 | H G Hanner | 45 | Head | Coal Cutter | Kansas |
| 57 | Ollie Hanner | 41 | Wife | — | Kansas |
| 58 | Margaret Hanner | 18 | Daughter | Usher | Colorado |
| 59 | James Buchanan THIS PERSON | 78 | Head | — | Scotland |
| 60 | Jean Buchanan | 51 | Daughter | — | Pennsylvania |
| 61 | Albert R Williams | 61 | Head | — | England |
| 62 | Richard Williams | 21 | Son | Miner | Colorado |
| 63 | Henry Williams | 19 | Son | Miner | Colorado |
| 64 | Ida Williams | 18 | Daughter | Maid | Colorado |
| 65 | George Williams | 16 | Son | — | Colorado |
| 66 | James Williams | 15 | Son | — | Colorado |
| 67 | Ralph Williams | 12 | Son | — | Colorado |
| 68 | Eli Cox | 58 | Head | Janitor | Tennessee |
| 69 | Catherine Cox | 40 | Wife | — | Kansas |
| 70 | Willard Cox | 19 | Son | New Worker | Colorado |
| 71 | Elwood Cox | 17 | Son | — | Colorado |
| 72 | Kathleen Cox | 14 | Dau | — | Colorado |
| 73 | Lupe Pine | 39 | Head | Miner | Colorado |
| 74 | Anna Pine | 38 | Wife | — | Colorado |
| 75 | Theodore Pine | 18 | Son | — | Colorado |
| 76 | Epifanio Pine | 16 | Son | — | Colorado |
| 77 | Lupe Pine | 13 | Son | — | Colorado |
| 78 | Filomika Pine | 15 | Daughter | — | Colorado |
| 79 | August L Wahlmeier | 74 | Head | — | Germany |
| 80 | Vacant | None | — | — | — |
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)