JB
John Buchanan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Buchanan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 8-person household.
Age 25
b. ~1915
Male
Son
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Buchanan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Additional Details | |
| Occupation | General worker |
| Industry | Liquor Factory |
| Class of Worker | PW |
| Income (1939) | 960 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | General Worker |
| Township / Ward | Boston City |
| Est. Birth Year | ~1915 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Buchanan | Son | — | 21 | ~1919 |
| John Buchanan | Son | — | 25 | ~1915 |
| Barbara Buchanan | Daughter | — | 2 | ~1938 |
| Margaret Buchanan | Daughter | — | 21 | ~1919 |
| Georgia Buchanan | Daughter | — | 12 | ~1928 |
| John Buchanan | Head | — | 48 | ~1892 |
| Mary Buchanan | Daughter | — | 14 | ~1926 |
| Margaret Buchanan | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 16
Suffolk, Massachusetts · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1923 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Messenger |
| Industry | Law Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Suffolk-County, Massachusetts
Son, age 25
Suffolk-County, Massachusetts · implied b. ~1915 — 8 household members
| Surname | Buchanan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Occupation | General worker |
| Industry | Liquor Factory |
| Class of Worker | PW |
| Income (1939) | 960 |
| Highest Grade | H-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 John Buchanan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Buchanan
Son · 1940 · age 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Barbara Buchanan
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Buchanan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Buchanan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Buchanan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Georgia 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01682-00256)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carroll Kapilian | 13 | Son | — | Massachusetts |
| 42 | Albert Kapilian | 11 | Son | — | Massachusetts |
| 43 | Ralph Kapilian | 4 | Son | — | Massachusetts |
| 46 | Carroll S. Murphy | 40 | Head | Fireman | Massachusetts |
| 47 | Gladys T. Murphy | 33 | Wife | — | Massachusetts |
| 48 | Caroline E. Murphy | 11 | Daughter | — | Massachusetts |
| 49 | Carroll, Jr. Murphy | 6 | Son | — | Massachusetts |
| 50 | Marion Murphy | 3 | Daughter | — | Massachusetts |
| 51 | William E. Daley | 42 | Head | Fireman | Canada-English |
| 52 | Marion Daley | 36 | Wife | — | Canada-English |
| 53 | Marianne Daley | 13 | Daughter | — | Massachusetts |
| 54 | Richard Daley | 9 | Son | — | Massachusetts |
| 55 | Francis J. Quirk | 20 | Head | Manager | Massachusetts |
| 56 | Blanche L. Quirk | 25 | Wife | — | Massachusetts |
| 57 | Edmund J. Quirk | 3 | Son | — | Massachusetts |
| 58 | Francis J. Quirk | 2 | Son | — | Massachusetts |
| 59 | Thomas Quirk | 0 | Son | — | Massachusetts |
| 60 | Catherine E. Thomas | 24 | Sister-in-law | Kitchen Helper | Massachusetts |
| 61 | James Breen | 50 | Head | Starter | Irish Free State |
| 62 | Catherine Breen | 50 | Wife | — | Massachusetts |
| 63 | Thomas T. Griffin | 56 | Head | Fireman | Massachusetts |
| 64 | Frances Griffin | 59 | Wife | — | Massachusetts |
| 65 | Michael B. Hawkins | 40 | Head | Checker | Northern Ireland |
| 66 | Katherine Hawkins | 41 | Wife | — | Irish Free State |
| 67 | John T. Hawkins | 7 | Son | — | Massachusetts |
| 68 | Michael B. Hawkins | 3 | Son | — | Massachusetts |
| 69 | Robert J. Hawkins | 39 | Brother | Pressman | Northern Ireland |
| 70 | John E. Buchanan | 48 | Head | Baker | Scotland |
| 71 | Margaret Buchanan | 48 | Wife | — | Scotland |
| 72 | John Buchanan THIS PERSON | 25 | Son | General Worker | Scotland |
| 73 | Margaret Buchanan | 21 | Daughter | Salesgirl | Scotland |
| 74 | William B. Buchanan | 21 | Son | Baker'S Helper | Scotland |
| 75 | Mary D. Buchanan | 14 | Daughter | — | Massachusetts |
| 76 | Georgia Buchanan | 12 | Daughter | — | Massachusetts |
| 77 | Barbara Buchanan | 2 | Daughter | — | Massachusetts |
| 78 | John Reino | 35 | Head | Machinist | Massachusetts |
| 79 | Mary Reino | 35 | Wife | — | Massachusetts |
| 80 | John Reino | 3 | Son | — | Massachusetts |
Related Census Records
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)