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John Blackburn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Blackburn across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1920 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Hazel Blackburn | Daughter | — | 15 | ~1925 |
| Margaret Blackburn | Daughter | — | 18 | ~1922 |
| Lillian Blackburn | Daughter | — | 22 | ~1918 |
| Christina Blackburn | Head | — | 53 | ~1887 |
| Jean Blackburn | Daughter | — | 13 | ~1927 |
| Charles Blackburn | Son | — | 24 | ~1916 |
| John Blackburn | Son | — | 20 | ~1920 |
| Martha Grinnell | Other | — | 28 | ~1912 |
| Marion Blackburn | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 9
Suffolk, Massachusetts · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | John R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 20
Suffolk-County, Massachusetts · implied b. ~1920 — 9 household members
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Blackburn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Blackburn
Son · 1940 · age 20 · b. ~1920 · Massachusetts
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Sibling
Charles Blackburn
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Blackburn
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Blackburn
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Blackburn
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Blackburn
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Blackburn
Sibling · 1940 · age 21
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
40 people indexed on this census page (nara:1940:m-t0627-01682-00080)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph King | 25 | Son | Bank Clerk | Massachusetts |
| 42 | Rita King | 23 | Daughter | Bookkeeper | Massachusetts |
| 43 | Margaret King | 19 | Daughter | Clerk | Massachusetts |
| 44 | Barbara King | 16 | Daughter | — | Massachusetts |
| 45 | Joseph A. Yureta | 53 | Head | — | Lithuania |
| 46 | Rosalie Yureta | 54 | Wife | — | Lithuania |
| 47 | William Yuhre | 32 | Son | Collector | Massachusetts |
| 48 | Sophie Yuhre | 26 | Daughter | Teacher | Massachusetts |
| 49 | Anne Yuhre | 25 | Daughter | Typist | Massachusetts |
| 50 | Augusta Beamkus | 48 | Head | Comber | Lithuania |
| 51 | Anna Beamkus | 50 | Wife | — | Lithuania |
| 52 | Helena Beamkus | 25 | Daughter | Stitcher | Massachusetts |
| 53 | Steven Beamkus | 21 | Son | Laborer | Lithuania |
| 54 | Christina Blackburn | 53 | Head | — | Nova Scotia |
| 55 | Charles Blackburn | 24 | Son | Service Boy | Massachusetts |
| 56 | Lillian Blackburn | 22 | Daughter | New Worker | Massachusetts |
| 57 | Marion Blackburn | 21 | Daughter | Student Nurse | Massachusetts |
| 58 | John Blackburn THIS PERSON | 20 | Son | — | Massachusetts |
| 59 | Margaret Blackburn | 18 | Daughter | New Worker | Massachusetts |
| 60 | Hazel Blackburn | 15 | Daughter | — | Massachusetts |
| 61 | Jean Blackburn | 13 | Daughter | — | Massachusetts |
| 62 | Martha Grinnell | 28 | Sister-in-law | Social Worker | New Hampshire |
| 63 | Albert Frost | 41 | Head | Chauffeur | Canada English |
| 64 | Mary Frost | 40 | Wife | — | Canada English |
| 65 | Harold Frost | 17 | Son | — | Massachusetts |
| 66 | Marjorie Frost | 14 | Daughter | — | Massachusetts |
| 67 | George Bronson | 43 | Boarder | Machinist | Massachusetts |
| 68 | Rita Bronson | 32 | Boarder | Private Nurse | New Jersey |
| 69 | Alice White | 56 | Head | Spinner | England |
| 70 | Joseph Lopresti | 49 | Head | Proprietor | Italy |
| 71 | Josephine Lopresti | 53 | Wife | — | Italy |
| 72 | James Lopresti | 19 | Son | New Worker | Massachusetts |
| 73 | Peter F. Hugo | 49 | Head | Foreman | Massachusetts |
| 74 | Bessie M. Hugo | 38 | Wife | — | Massachusetts |
| 75 | Leo Hugo | 22 | Son | Temporary Mail Carrier | Massachusetts |
| 76 | Frederick Hugo | 11 | Son | — | Massachusetts |
| 77 | Sanford Haught | 60 | Head | Chauffeur | Nova Scotia |
| 78 | Lila Haught | 50 | Wife | — | Sweden |
| 79 | Virginia Haught | 23 | Daughter | Receptionist | Massachusetts |
| 80 | Allan R. Haught | 15 | 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)