JG
John Geary — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Geary across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Geary |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Electrician |
| Industry | Electric Contracting |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 1140 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Electrician |
| Township / Ward | Boston |
| Est. Birth Year | ~1916 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Geary | Daughter | — | 14 | ~1926 |
| Elizabeth Geary | Daughter | — | 12 | ~1928 |
| Helen Geary | Daughter | — | 22 | ~1918 |
| John Geary | Son | — | 24 | ~1916 |
| George Pichette | Other | — | 64 | ~1876 |
| Nellie Geary | Head | — | 50 | ~1890 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 15
Suffolk, Massachusetts · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Geary |
| Given Name | John V |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 24
Suffolk-County, Massachusetts · implied b. ~1916 — 6 household members
| Surname | Geary |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Electrician |
| Industry | Electric Contracting |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 1140 |
| Highest Grade | Hs 4 |
| 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 Geary across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Geary
Son · 1940 · age 24 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Helen Geary
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Geary
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Geary
Sibling · 1940 · age 14
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
39 people indexed on this census page (nara:1940:m-t0627-01676-00658)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward R Armstrong | 53 | Head | Painter | Massachusetts |
| 42 | Irene H Armstrong | 51 | Wife | — | New Hampshire |
| 43 | Lucy W Hall | 74 | Mother in law | — | Vermont |
| 44 | Violet M Lyons | 37 | Head | Hairdresser | Massachusetts |
| 45 | Arlene Lyons | 19 | Daughter | Student Nurse | Massachusetts |
| 46 | Nellie E Geary | 50 | Head | — | Nebraska |
| 47 | John C Geary THIS PERSON | 24 | Son | Electrician | Massachusetts |
| 48 | Helen T Geary | 22 | Daughter | Mimeograph Opr | Massachusetts |
| 49 | Mary H Geary | 14 | Daughter | — | Massachusetts |
| 50 | Elizabeth A Geary | 12 | Daughter | — | Massachusetts |
| 51 | George Pichette | 64 | Lodger | Janitor | New Hampshire |
| 52 | Daniel J Geary | 35 | Head | Stationary Engineer | Eire |
| 53 | Eileen Geary | 37 | Wife | — | Eire |
| 54 | Edmund W Geary | 2 | Son | — | Massachusetts |
| 55 | Kevin P Geary | 1 | Son | — | Massachusetts |
| 56 | Arthur F Kelley | 41 | Head | Truck Driver | Massachusetts |
| 57 | Catherine L Kelley | 43 | Wife | — | Massachusetts |
| 58 | Catherine J Kelley | 20 | Daughter | Student Nurse | Massachusetts |
| 59 | Francis A Kelley | 18 | Son | — | Massachusetts |
| 60 | Anna M Gallagher | 29 | Wife | — | Massachusetts |
| 61 | Frederick Gallagher | 10 | Son | — | Massachusetts |
| 62 | Robert Gallagher | 6 | Son | — | Massachusetts |
| 63 | Catherine Gallagher | 4 | Daughter | — | Massachusetts |
| 64 | Malchi J O'Keefe | 57 | Head | Repair Man | Eire |
| 65 | Delia O'Keefe | 44 | Wife | — | Eire |
| 66 | John C O'Keefe | 23 | Son | Salesman | Massachusetts |
| 67 | James M O'Keefe | 21 | Son | Salesman | Massachusetts |
| 68 | William M O'Keefe | 17 | Son | Messenger Boy | Massachusetts |
| 69 | Martin M O'Keefe | 16 | Son | — | Massachusetts |
| 70 | Francis M O'Keefe | 8 | Son | — | Massachusetts |
| 71 | Charles E Peterson | 69 | Head | Painter | Sweden |
| 72 | Lydia Peterson | 66 | Wife | — | Sweden |
| 73 | Edith A Peterson | 27 | Daughter | File Clerk | Massachusetts |
| 74 | Carl R Peterson | 24 | Son | Collector | Massachusetts |
| 76 | Bernard Goldstein | 34 | Head | Roofer | Massachusetts |
| 77 | Tillie Goldstein | 34 | Wife | — | Massachusetts |
| 78 | Robert Goldstein | 10 | Son | — | Massachusetts |
| 79 | Shirley Goldstein | 2 | Daughter | — | Massachusetts |
| 80 | Sofie Snider | 67 | Mother in law | — | Russia |
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)