JG
John Gill — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Gill across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Gill |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | Yes 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Malden City |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Richard Gill | Son | — | 12 | ~1928 |
| Rose Gill | Daughter | — | 13 | ~1927 |
| George Gill | Son | — | 15 | ~1925 |
| John Gill | Son | — | 15 | ~1925 |
| Mary Gill | Spouse | — | 53 | ~1887 |
| George Gill | Head | — | 54 | ~1886 |
| Arthur Gill | Son | — | 10 | ~1930 |
| Frances Gill | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Middlesex, Massachusetts
Other, age 5
Middlesex, Massachusetts · implied b. ~1925 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gillis |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 15
Middlesex-County, Massachusetts · implied b. ~1925 — 8 household members
| Surname | Gill |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | Yes 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 Gill across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Gill
Son · 1940 · age 15 · b. ~1925 · Massachusetts
★ You are viewing this record
Sibling
Arthur Gill
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Gill
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Gill
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Gill
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Gill
Sibling · 1940 · age 15
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
39 people indexed on this census page (nara:1940:m-t0627-01608-00133)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald M Munro | 36 | Head | Mechanic | Scotland |
| 2 | Mary B Munro | 33 | Wife | Saleswoman | Canada-English |
| 3 | Ethelyn Lawson | 30 | Head | Decorator | Massachusetts |
| 4 | John F Lawson | 10 | Son | — | Massachusetts |
| 5 | Nettie West | 78 | Head | — | Massachusetts |
| 6 | Alice West | 44 | Daughter | Nurse | Massachusetts |
| 7 | Lawrence Chisholm | 42 | Head | Truck Driver | Massachusetts |
| 8 | Abigail Chisholm | 50 | Wife | — | Massachusetts |
| 9 | John Chisholm | 16 | Son | — | Massachusetts |
| 10 | Russell Chisholm | 13 | Son | — | Massachusetts |
| 11 | Richard Chisholm | 11 | Son | — | Massachusetts |
| 12 | Yvonne Chisholm | 8 | Daughter | — | Massachusetts |
| 13 | Nellie D Ferguson | 57 | Head | — | Irish Free State |
| 14 | Charles Ferguson | 28 | Son | Cutter | Massachusetts |
| 15 | Ruth E Ferguson | 26 | Daughter | Stenographer | Massachusetts |
| 16 | Grace Ferguson | 25 | Daughter | Stenographer | Massachusetts |
| 17 | Albert Ferguson | 22 | Son | Shipper | Massachusetts |
| 18 | William Ferguson | 21 | Son | — | Massachusetts |
| 19 | Ellen Ferguson | 20 | Daughter | Stenographer | Massachusetts |
| 20 | Harper F Spence | 57 | Head | Painter | Canada-English |
| 21 | Tomy Spence | 55 | Wife | — | Canada-English |
| 22 | Margaret Harris | 20 | Lodger | Receptionist | Massachusetts |
| 23 | Albert B Hellman | 21 | Roomer | Service Man | Massachusetts |
| 24 | Burton Hughes Dakin | 35 | Roomer | Cook | Canada-English |
| 25 | George Gill | 54 | Head | Marble Setter | Massachusetts |
| 26 | Mary Gill | 53 | Wife | — | Massachusetts |
| 27 | Frances Gill | 21 | Daughter | Book-Keeper | Massachusetts |
| 28 | John Gill THIS PERSON | 15 | Son | — | Massachusetts |
| 29 | George Jr Gill | 15 | Son | — | Massachusetts |
| 30 | Rose Mary Gill | 13 | Daughter | — | Massachusetts |
| 31 | Richard Gill | 12 | Son | — | Massachusetts |
| 32 | Arthur Gill | 10 | Son | — | Massachusetts |
| 33 | Peter Short | 56 | Head | Watchman | Massachusetts |
| 34 | Mary Short | 55 | Wife | — | Irish Free State |
| 35 | Alice Short | 36 | Daughter | Book-Keeper | Massachusetts |
| 36 | John Short | 34 | Son | New Worker | Massachusetts |
| 37 | Helen Short | 30 | Daughter | Spinner | Massachusetts |
| 38 | Grace Short | 27 | Daughter | New Worker | Massachusetts |
| 39 | Herberta Belknap | 80 | Head | — | Canada-English |
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)