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John Connelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Connelly across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 11-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Connelly |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Milk bottler |
| Industry | Retail milk plant |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Milk Bottler |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1919 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Connelly | Son | — | 21 | ~1919 |
| Mary Connelly | Daughter | — | 23 | ~1917 |
| Doris Connelly | Daughter | — | 15 | ~1925 |
| Anthony Connelly | Head | — | 55 | ~1885 |
| Thomas Connelly | Son | — | 25 | ~1915 |
| Theresa Connelly | Daughter | — | 13 | ~1927 |
| Joseph Connelly | Son | — | 16 | ~1924 |
| Sara Connelly | Spouse | — | 51 | ~1889 |
| Francis Connelly | Son | — | 19 | ~1921 |
| Robert Connelly | Son | — | 10 | ~1930 |
| Anna Connelly | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 11
Middlesex, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | John E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada-English |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 21
Middlesex-County, Massachusetts · implied b. ~1919 — 11 household members
| Surname | Connelly |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | Milk bottler |
| Industry | Retail milk plant |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 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 Connelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Connelly
Son · 1940 · age 21 · b. ~1919 · Massachusetts
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Sibling
Joseph Connelly
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Connelly
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Connelly
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Connelly
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Connelly
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Connelly
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Connelly
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Connelly
Sibling · 1940 · age 25
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-t0627-01702-00427)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Richard Coutts | 11 | Son | — | Massachusetts |
| 42 | Marshall R. Wright | 42 | Head | — | Massachusetts |
| 43 | Margaret M. Wright | 46 | Wife | Charwoman | Eire |
| 44 | Marshall Wright | 16 | Son | New Worker | Massachusetts |
| 45 | Dorothy M. Wright | 8 | Daughter | — | Massachusetts |
| 46 | Michael E. Cabelone | 37 | Head | Retail Bakery Salesman | Massachusetts |
| 47 | Mary J. Cabelone | 33 | Wife | — | Eire |
| 48 | Barbara A. Cabelone | 1 | Daughter | — | Massachusetts |
| 49 | Eugene J. Cabelone | 0 | Son | — | Massachusetts |
| 51 | Anthony Connelly | 55 | Head | Watchman | Eire |
| 52 | Sara Connelly | 51 | Wife | — | Eire |
| 53 | Thomas J. Connelly | 25 | Son | Stock Clerk | Massachusetts |
| 54 | Mary N. Connelly | 23 | Daughter | Biller | Massachusetts |
| 55 | John M. Connelly THIS PERSON | 21 | Son | Milk Bottler | Massachusetts |
| 56 | Francis A. Connelly | 19 | Son | New Worker | Massachusetts |
| 57 | Anna B. Connelly | 18 | Daughter | Comptometer Operator | Massachusetts |
| 58 | Joseph E. Connelly | 16 | Son | — | Massachusetts |
| 59 | Doris R. Connelly | 15 | Daughter | — | Massachusetts |
| 60 | Theresa O. Connelly | 13 | Daughter | — | Massachusetts |
| 61 | Robert L. Connelly | 10 | Son | — | Massachusetts |
| 62 | Mary A. Mcsaffigan | 59 | Head | — | Massachusetts |
| 63 | Florence R. Mcsaffigan | 24 | Daughter | — | Massachusetts |
| 64 | John J. Mcsaffigan | 27 | Son | Laborer | Massachusetts |
| 65 | Joseph E. Mcsaffigan | 23 | Son | — | Massachusetts |
| 66 | Charles J. Mcsaffigan | 21 | Son | Stock Room Helper | Massachusetts |
| 67 | Joseph F. Young | 36 | Head | Truck Driver | Massachusetts |
| 68 | Grace V. Young | 31 | Wife | — | Massachusetts |
| 69 | Dorothy E. Young | 14 | Daughter | — | Massachusetts |
| 70 | Joseph J. Young | 12 | Son | — | Massachusetts |
| 71 | Robert E. Young | 7 | Son | — | Massachusetts |
| 72 | Florence R. Young | 5 | Son | — | Massachusetts |
| 73 | Richard F. Young | 3 | Son | — | Massachusetts |
| 74 | Raymond C. Young | 1 | Son | — | Massachusetts |
| 75 | William J. Young | 0 | Son | — | Massachusetts |
| 76 | Mary E. Mcsaffigan | 64 | Head | — | Massachusetts |
| 77 | Elizabeth S. Buckley | 68 | Head | Matron | Massachusetts |
| 78 | John C. Crosby | 25 | Boarder | Truck Driver | Massachusetts |
| 79 | Norman G. Carlson | 35 | Head | Guard | Massachusetts |
| 80 | Mary A. Carlson | 29 | Wife | — | Canada-English |
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)