JG
John Gill — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Gill across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Gill |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Robert Gill | Son | — | 23 | ~1917 |
| Anna Gill | Daughter | — | 17 | ~1923 |
| Peter Gill | Head | — | 50 | ~1890 |
| Catherine Gill | Spouse | — | 46 | ~1894 |
| William Gill | Son | — | 14 | ~1926 |
| Margaret Gill | Daughter | — | 21 | ~1919 |
| John Gill | Son | — | 14 | ~1926 |
| Helen Gill | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 4
Suffolk, Massachusetts · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gill |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | No |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 14
Suffolk-County, Massachusetts · implied b. ~1926 — 8 household members
| Surname | Gill |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| 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 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Anna Gill
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Gill
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Gill
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Gill
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Gill
Sibling · 1940 · age 23
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-t0627-01666-00592)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hazel D. Gagnon | 32 | Wife | — | Massachusetts |
| 2 | Louise A. Gagnon | 12 | Daughter | — | Massachusetts |
| 3 | Richard J. Gagnon | 10 | Son | — | Massachusetts |
| 4 | Mildred B. Gagnon | 9 | Daughter | — | Massachusetts |
| 5 | Peter Gill | 50 | Head | Janitor | Eire |
| 6 | Catherine Gill | 46 | Wife | Attendant | Eire |
| 7 | Robert S. Gill | 23 | Son | Mechanic | Massachusetts |
| 8 | Margaret Gill | 21 | Daughter | Clerical | Massachusetts |
| 9 | Helen Gill | 19 | Daughter | Counter | Massachusetts |
| 10 | Anna Gill | 17 | Daughter | — | Massachusetts |
| 11 | John Gill THIS PERSON | 14 | Son | — | Massachusetts |
| 12 | William Gill | 14 | Son | — | Massachusetts |
| 13 | John Kelly | 50 | Head | Climber & Puller | Massachusetts |
| 14 | Stella Evans | 30 | Sister | Artist | Massachusetts |
| 15 | Cornelius Mcdermott | 45 | Head | Iron Worker | Massachusetts |
| 16 | Rose Dever | 80 | Aunt | — | Eire |
| 17 | Stanley Mcmahon | 38 | Head | Longshoreman | Massachusetts |
| 18 | Esther Mcmahon | 37 | Wife | — | Massachusetts |
| 19 | William Mcmahon | 5 | Son | — | Massachusetts |
| 20 | John Mcmahon | 3 | Son | — | Massachusetts |
| 21 | Robert Mcmahon | 2 | Son | — | Massachusetts |
| 22 | John Millner | 36 | Head | Packer | Rhode Island |
| 23 | Rena Millner | 35 | Wife | — | Maine |
| 24 | Norma Millner | 12 | Daughter | — | Massachusetts |
| 25 | John Millner | 10 | Son | — | Massachusetts |
| 26 | Audrey Millner | 8 | Daughter | — | Massachusetts |
| 27 | William Millner | 6 | Son | — | Massachusetts |
| 28 | James Cavanaugh | 34 | Head | Helper On Truck | Massachusetts |
| 29 | Alice Cavanaugh | 33 | Wife | — | Massachusetts |
| 30 | Madeline Cavanaugh | 8 | Daughter | — | Massachusetts |
| 31 | Joseph Cavanaugh | 4 | Son | — | Massachusetts |
| 32 | Catherine Sofrin | 42 | Head | — | Rhode Island |
| 33 | John Sofrin | 20 | Son | New Worker | Massachusetts |
| 34 | Raymond Sofrin | 16 | Son | — | Massachusetts |
| 35 | — | None | — | — | — |
| 36 | Joseph Bettencourt | 44 | Head | Mechanic | Massachusetts |
| 37 | Blanche Bettencourt | 43 | Wife | — | Massachusetts |
| 38 | Joseph Bettencourt | 13 | Son | — | Massachusetts |
| 39 | Donald Bettencourt | 7 | Son | — | Massachusetts |
| 40 | David G. Shargy | 45 | Head | Laborer | 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)