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John Blackwell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Plymouth, Massachusetts
Our Model Tree links this John Blackwell across the 1910, 1920 and 1930 US Censuses in Plymouth, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 7-person household.
Age 50
b. ~1880
Male
Head
Born: Massachusetts
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Plymouth, Massachusetts |
| Surname | Blackwell |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Machinist |
| Industry | Cotton Gin |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2500 |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Machinist |
| Township / Ward | East Bridgewater Town |
| Est. Birth Year | ~1880 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lillian Blackwell | Other | — | 46 | ~1884 |
| John Blackwell | Head | — | 50 | ~1880 |
| Beverly Blackwell | Daughter | — | 8 | ~1922 |
| John Blackwell | Son | — | 17 | ~1913 |
| Ruth Blackwell | Daughter | — | 23 | ~1907 |
| Shirley Blackwell | Daughter | — | 4 | ~1926 |
| Barbara Blackwell | Daughter | — | 8 | ~1922 |
Census Appearances
1910
Plymouth, Massachusetts
Head, age 30
Plymouth, Massachusetts · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Years Married | 7 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Machinist |
| Industry | Cotton gin factory |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Plymouth, Massachusetts
Head, age 40
Plymouth, Massachusetts · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Machinist |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Plymouth, Massachusetts
Head, age 50
Plymouth, Massachusetts · implied b. ~1880 — 7 household members
| Surname | Blackwell |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Machinist |
| Industry | Cotton Gin |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2500 |
| Veteran | No |
| 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 Blackwell across 3 US Census years (1910, 1920 and 1930) in Plymouth, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
John Blackwell
Head · 1930 · age 50 · b. ~1880 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Plymouth, Massachusetts
Open full size
1930 US Federal Census — Plymouth, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel939:1115)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Thomas F. Grady | 50 | Boarder | Instructor | Massachusetts |
| 52 | Ethel J. Grady | 32 | Boarder | — | Massachusetts |
| 53 | Lawrence H. Russell | 30 | Head | Clerk | Massachusetts |
| 54 | Evelina M. Russell | 29 | Wife-H | — | Massachusetts |
| 55 | Louise H. Russell | 5 | Daughter | — | Massachusetts |
| 56 | Mary L. Russell | 3 | Daughter | — | Massachusetts |
| 57 | Donald P. Russell | 2 | Son | — | Massachusetts |
| 58 | William L. Lightfoot | 35 | Head | Retail Merchant | England |
| 59 | Agnes M. Lightfoot | 37 | Wife-H | — | Massachusetts |
| 60 | Agnes C. Lightfoot | 7 | Daughter | — | Massachusetts |
| 61 | Eleanor M. Lightfoot | 5 | Daughter | — | Massachusetts |
| 62 | Barbara A. Lightfoot | 1 | Daughter | — | Massachusetts |
| 63 | William H. Potter | 45 | Head | Melter | Maine |
| 64 | Rose Potter | 42 | Wife-H | — | Canada-French |
| 65 | Ernest A. Potter | 19 | Son | Core Maker | Massachusetts |
| 66 | Mary L. Potter | 14 | Daughter | — | Massachusetts |
| 67 | Ruth D. Potter | 11 | Daughter | — | Massachusetts |
| 68 | Sidney D. Ford | 49 | Head | Horticulturist | Massachusetts |
| 69 | Hattie M. Ford | 73 | Mother-H | — | Massachusetts |
| 70 | Ellis B. Mccormack | 56 | Head | — | Nova Scotia |
| 71 | Alice G. Mccormack | 31 | Daughter | Book-Keeper | Massachusetts |
| 72 | Wentworth B. Mccormack | 25 | Son | Book-Keeper | Massachusetts |
| 73 | Herbert G. Mccormack | 20 | Son | Shipper | Massachusetts |
| 74 | Hester E. Mccormack | 16 | Daughter | — | Massachusetts |
| 75 | Edward Holmes | 60 | Head | Chauffeur | Massachusetts |
| 76 | Asenath M. Holmes | 70 | Wife-H | — | Massachusetts |
| 77 | Minnie M. Holmes | 32 | Daughter | Telephone Operator | Massachusetts |
| 78 | George L. Chamberlain | 75 | Head | — | Massachusetts |
| 79 | Ethel M. Chamberlain | 63 | Wife-H | — | Massachusetts |
| 80 | Phyllis Mackey | 9 | Granddaughter | — | Massachusetts |
| 81 | Benjamin A. Lincoln | 47 | Head | Proprietor | Massachusetts |
| 82 | E. Dorothea L. Lincoln | 51 | Wife-H | — | Canada-English |
| 83 | Albert T. Lincoln | 16 | Son | — | Massachusetts |
| 84 | John T. Blackwell THIS PERSON | 50 | Head | Machinist | Massachusetts |
| 85 | Lillian M. Blackwell | 46 | Wife-H | — | Massachusetts |
| 86 | Ruth D. Blackwell | 23 | Daughter | Clerk | Massachusetts |
| 87 | John R. Blackwell | 17 | Son | — | Massachusetts |
| 88 | Beverly H. Blackwell | 8 | Daughter | — | Massachusetts |
| 89 | Barbara C. Blackwell | 8 | Daughter | — | Massachusetts |
| 90 | Shirley C. Blackwell | 4 | Daughter | — | Massachusetts |
| 91 | Walter A. Lothrop | 77 | Head | — | Massachusetts |
| 92 | Irene Charles Lothrop | 54 | Boarder | Printer | New York |
| 93 | Ray H. Judson | 35 | Head | Machinist | Massachusetts |
| 94 | Ellen E. Judson | 35 | Wife-H | — | Massachusetts |
| 95 | Allison V. Judson | 11 | Daughter | — | Massachusetts |
| 96 | Helen D. Judson | 1 | Daughter | — | Massachusetts |
| 97 | Raymond M. Perrault | 25 | Head | Chauffeur | Massachusetts |
| 98 | Susan A. Perrault | 24 | Wife-H | Clerk | Massachusetts |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)