JB
James Buchanan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harris-County, Texas
Our Model Tree links this James Buchanan across the 1930 and 1940 US Censuses in Harris-County, Texas (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 10-person household.
Age 19
b. ~1921
Male
Son
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Harris-County, Texas |
| Surname | Buchanan |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Houston |
| 1935 Residence (County) | Harris |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 550 |
| Highest Grade | H 3 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Truck Driver |
| Township / Ward | Precinct 1 |
| Est. Birth Year | ~1921 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Jerry Buchanan | Son | — | 8 | ~1932 |
| Mary Buchanan | Daughter | — | ~1940 | |
| Arthur Buchanan | Son | — | 17 | ~1923 |
| Archie Buchanan | Son | — | 14 | ~1926 |
| Emmit Buchanan | Head | — | 38 | ~1902 |
| Emilie Buchanan | Spouse | — | 31 | ~1909 |
| Ira Buchanan | Son | — | 12 | ~1928 |
| James Buchanan | Son | — | 19 | ~1921 |
| Robert Buchanan | Son | — | 10 | ~1930 |
| L Buchanan | Son | — | 3 | ~1937 |
Census Appearances
1930
Harris, Texas
Other, age 9
Harris, Texas · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | James R. |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Arkansas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Harris-County, Texas
Son, age 19
Harris-County, Texas · implied b. ~1921 — 10 household members
| Surname | Buchanan |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Houston |
| 1935 Residence (County) | Harris |
| Occupation | Truck Driver |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 550 |
| Highest Grade | H 3 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Buchanan
Son · 1940 · age 19 · b. ~1921 · Texas
★ You are viewing this record
Sibling
L Buchanan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Buchanan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Archie Buchanan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Buchanan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Buchanan
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Buchanan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ira Buchanan
Sibling · 1940 · age 12
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 — Harris-County, Texas
Open full size
1940 US Federal Census — Harris-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04052-00565)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Willie A. Michalska | 35 | Head | Salesman | Texas |
| 2 | Mary B. Michalska | 34 | Wife | — | Texas |
| 3 | Arthur A. Jr. Michalska | 14 | Son | — | Texas |
| 4 | Albert S. Michalska | 12 | Son | — | Texas |
| 5 | Mary E. Michalska | 7 | Daughter | — | Texas |
| 6 | Christine L. Michalska | 3 | Daughter | — | Texas |
| 7 | William L. Lane | 39 | Head | Machinist | Texas |
| 8 | Alma C. Lane | 35 | Wife | — | Texas |
| 9 | Billy J. Lane | 13 | Daughter | — | Texas |
| 10 | Alma C. Lane | 10 | Daughter | — | Texas |
| 11 | Archie B. Collins | 37 | Head | Truck Driver | Texas |
| 12 | Maude Collins | 33 | Wife | — | Nebraska |
| 13 | Jenny M. Collins | 13 | Daughter | — | Texas |
| 14 | Minnie B. Collins | 11 | Daughter | — | Texas |
| 15 | Ima J. Collins | 8 | Daughter | — | Texas |
| 16 | Perlie L. Collins | 6 | Daughter | — | Texas |
| 17 | Verlie Collins | 2 | Daughter | — | Texas |
| 18 | Martha J. Collins | 0 | Daughter | — | Texas |
| 19 | Jerry J. Tucain | 52 | Head | Building Engineer | Louisiana |
| 20 | Iva J. Tucain | 45 | Wife | — | Texas |
| 21 | Pridella B. Tucain | 15 | Daughter | — | Texas |
| 22 | Angus A. Mathews | 55 | Head | Contractor | Texas |
| 23 | Astilla J. Mathews | 50 | Wife | — | Texas |
| 24 | Milton Selman | 39 | Head | Barber | Texas |
| 25 | Gracie M. Selman | 36 | Wife | — | Texas |
| 26 | Betty G. Selman | 11 | Daughter | — | Texas |
| 27 | Herschel L. Chapman | 44 | Head | Lather | Illinois |
| 28 | Mabel M. Chapman | 37 | Wife | — | Texas |
| 29 | Herschel L. Jr. Chapman | 18 | Son | — | Colorado |
| 30 | Virginia D. Chapman | 12 | Daughter | — | Colorado |
| 31 | Emmit R. Buchanan | 38 | Head | Truck Driver | Texas |
| 32 | Emilie L. Buchanan | 31 | Wife | — | Arkansas |
| 33 | James R. Buchanan THIS PERSON | 19 | Son | Truck Driver | Texas |
| 34 | Arthur E. Buchanan | 17 | Son | New Worker | Texas |
| 35 | Archie L. Buchanan | 14 | Son | — | Texas |
| 36 | Ira J. Buchanan | 12 | Son | — | Texas |
| 37 | Robert Reese Buchanan | 10 | Son | — | Texas |
| 38 | Jerry B. Buchanan | 8 | Son | — | Texas |
| 39 | L. Campbell Buchanan | 3 | Son | — | Texas |
| 40 | Mary A. Buchanan | 0 | Daughter | — | Texas |
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)