JG
John Gillespie — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Gillespie across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Gillespie |
| Given Name | John S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Chelsea City |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Mary Mccallahan | Other | — | 31 | ~1909 |
| Leo Gillespie | Son | — | 12 | ~1928 |
| John Gillespie | Head | — | 48 | ~1892 |
| Thomas Gillespie | Son | — | 19 | ~1921 |
| Josephine Gillespie | Spouse | — | 50 | ~1890 |
| John Gillespie | Son | — | 13 | ~1927 |
| Cornelius Gillespie | Son | — | 18 | ~1922 |
| Eleanor Gillespie | Daughter | — | 16 | ~1924 |
| Paul Gillespie | Son | — | 7 | ~1933 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gillespie |
| Given Name | John F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland Free State |
| Mother's Birthplace | Ireland Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 13
Suffolk-County, Massachusetts · implied b. ~1927 — 9 household members
| Surname | Gillespie |
| Given Name | John S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 8 |
| 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 Gillespie across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Gillespie
Son · 1940 · age 13 · b. ~1927 · Massachusetts
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Sibling
Leo Gillespie
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Gillespie
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cornelius Gillespie
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Gillespie
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Gillespie
Sibling · 1940 · age 16
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-t0627-01641-00499)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hilliard Mccarthy | 2 | Son | — | Massachusetts |
| 2 | Elsie Tucker | 75 | Mother-in-law | — | Eire Ireland |
| 3 | Angelina Banchiano | 66 | Head | — | Italy |
| 4 | David Banchiano | 28 | Son | Proprietor | Massachusetts |
| 5 | Francis O'Keefe | 37 | Head | Laborer | Massachusetts |
| 6 | Gladys O'Keefe | 30 | Wife | — | Massachusetts |
| 7 | John O'Keefe | 9 | Son | — | Massachusetts |
| 8 | Paul O'Keefe | 4 | Son | — | Massachusetts |
| 9 | David O'Keefe | 2 | Son | — | Massachusetts |
| 10 | Joseph O'Keefe | 0 | Son | — | Massachusetts |
| 11 | Frederick O'Keefe | 0 | Son | — | Massachusetts |
| 12 | Emile Arsenault | 52 | Head | Wpa Laborer | Canada French |
| 13 | Josephine Arsenault | 42 | Wife | — | Canada French |
| 14 | Noel Arsenault | 16 | Son | — | Massachusetts |
| 15 | Tilmon Arsenault | 14 | Son | — | Massachusetts |
| 16 | Theresa Arsenault | 12 | Daughter | — | Massachusetts |
| 17 | Marie Arsenault | 10 | Daughter | — | Massachusetts |
| 18 | Lawrence Arsenault | 9 | Son | — | Massachusetts |
| 19 | Doris Arsenault | 7 | Daughter | — | Massachusetts |
| 20 | Edward Arsenault | 5 | Son | — | Massachusetts |
| 21 | Lorraine Arsenault | 3 | Son | — | Massachusetts |
| 22 | Louise Allen | 29 | Head | Attendant | Massachusetts |
| 23 | Jean Allen | 10 | Daughter | — | Massachusetts |
| 24 | George Allen | 6 | Son | — | Massachusetts |
| 25 | William Vogel | 74 | Head | — | Germany |
| 26 | Frederick Vogel | 80 | Wife | — | Germany |
| 27 | William Vogel | 51 | Son | — | Massachusetts |
| 28 | Pauline A. Vogel | 56 | Daughter | Winder | Massachusetts |
| 29 | John P. Gillespie | 48 | Head | Gas Worker | Massachusetts |
| 30 | Josephine Gillespie | 50 | Wife | — | Massachusetts |
| 31 | Thomas F. Gillespie | 19 | Son | New Worker | Massachusetts |
| 32 | Cornelius Gillespie | 18 | Son | — | Massachusetts |
| 33 | Eleanor Gillespie | 16 | Daughter | — | Massachusetts |
| 34 | John S. Gillespie THIS PERSON | 13 | Son | — | Massachusetts |
| 35 | Leo P. Gillespie | 12 | Son | — | Massachusetts |
| 36 | Paul J. Gillespie | 7 | Son | — | Massachusetts |
| 37 | Mary E. Mccallahan | 31 | Niece | Inspector | Eire Ireland |
| 38 | Mary Lanzillo | 67 | Head | — | Canada French |
| 39 | Mary Arsenault | 23 | Lodger | Mechanic | Massachusetts |
| 40 | Joseph Lynds | 53 | Head | Carpenter | Newfoundland |
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)