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John Boyle — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Boyle across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Boyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1928 |
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 |
|---|---|---|---|---|
| Phyllis Boyle | Daughter | — | 7 | ~1933 |
| Helen Boyle | Daughter | — | 17 | ~1923 |
| Julia Boyle | Daughter | — | 11 | ~1929 |
| Beverly Boyle | Daughter | — | 1 | ~1939 |
| Peter Boyle | Head | — | 42 | ~1898 |
| Peter Boyle | Son | — | 3 | ~1937 |
| David Boyle | Son | — | 14 | ~1926 |
| John Boyle | Son | — | 12 | ~1928 |
| Mary Boyle | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 2
Middlesex, Massachusetts · implied b. ~1928 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyles |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 9 household members
| Surname | Boyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell city |
| 1935 Residence (County) | Middlesex |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 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 Boyle across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Boyle
Son · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
David Boyle
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beverly Boyle
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Boyle
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Boyle
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Boyle
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Boyle
Sibling · 1940 · age 3
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01691-00669)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter C Walker | 33 | Son | Civil Engineer | Massachusetts |
| 2 | Beatrice E Walker | 25 | Daughter | Chef | Massachusetts |
| 3 | Charles W Walker | 22 | Son | Chef | Massachusetts |
| 4 | Helen Hoyle | 28 | Head | — | Massachusetts |
| 5 | Ezra Chase | 51 | Nephew | Clerk | Massachusetts |
| 6 | Marion Cusick | 75 | Lodger | — | Massachusetts |
| 7 | Peter Boyle | 42 | Head | Leather Worker | Massachusetts |
| 8 | Mary Boyle | 42 | Wife | — | Massachusetts |
| 9 | Helen Boyle | 17 | Daughter | — | Massachusetts |
| 10 | David Boyle | 14 | Son | — | Massachusetts |
| 11 | John Boyle THIS PERSON | 12 | Son | — | Massachusetts |
| 12 | Julia Boyle | 11 | Daughter | — | Massachusetts |
| 13 | Phyllis Boyle | 7 | Daughter | — | Massachusetts |
| 14 | Peter Boyle | 3 | Son | — | Massachusetts |
| 15 | Beverly Boyle | 1 | Daughter | — | Massachusetts |
| 16 | Frank D Leslie | 70 | Head | Stationary Fireman | Scotland |
| 17 | Hugh Leslie | 33 | Son | Truck Driver | Scotland |
| 18 | Francis Leslie | 31 | Son | Fixer | Massachusetts |
| 19 | Helen R Mckay | 41 | Head | Drawer | Scotland |
| 20 | Howard Mckay | 9 | Son | — | New York |
| 21 | Josephine Hill | 67 | Lodger | — | Maine |
| 22 | Ira Bordon | 36 | Head | Electrical Contractor | Massachusetts |
| 23 | Irene D Bordon | 36 | Wife | — | Massachusetts |
| 24 | John Bordon | 3 | Son | — | Massachusetts |
| 25 | Mary Josephine Bordon | 2 | Daughter | — | Massachusetts |
| 26 | Abe Parker | 52 | Head | Shoe Repair | Russia |
| 27 | Annie Parker | 48 | Wife | — | Russia |
| 28 | Thelma Parker | 23 | Daughter | Stitcher | Massachusetts |
| 29 | Charles Parker | 20 | Son | Paste Room | Massachusetts |
| 30 | George Brown | 69 | Head | — | Maine |
| 31 | Eva Brown | 58 | Wife | — | Canada-French |
| 32 | Albert Bugden | 36 | Head | Salesman | Massachusetts |
| 33 | Edith Bugden | 27 | Wife | — | Massachusetts |
| 34 | Herbert Estey | 51 | Head | Oiler | Maine |
| 35 | Blanche Estey | 48 | Wife | — | Canada-French |
| 36 | Fern Estey | 25 | Daughter | Hairdresser | Maine |
| 37 | Derwood Estey | 19 | Son | — | Maine |
| 38 | Reginal Estey | 16 | Son | — | Maine |
| 39 | Estelle Bowers | 59 | Head | — | Pennsylvania |
| 40 | George W Bowers | 24 | Son | Engineer | Massachusetts |
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)