JC
James Connelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Connelly across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 11-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Connelly |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1929 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Mary Donnelly | Daughter | — | 12 | ~1928 |
| Catharine Connelly | Daughter | — | 14 | ~1926 |
| John Connelly | Son | — | 9 | ~1931 |
| Joseph Connelly | Son | — | 20 | ~1920 |
| Michael Connelly | Head | — | 57 | ~1883 |
| Anna Connelly | Daughter | — | 16 | ~1924 |
| Mary Connelly | Spouse | — | 53 | ~1887 |
| Francis Connelly | Son | — | 18 | ~1922 |
| James Connelly | Son | — | 11 | ~1929 |
| Mary Donnelly | Daughter | — | 28 | ~1912 |
| Gertrude Connelly | Daughter | — | 24 | ~1916 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 11
Suffolk-County, Massachusetts · implied b. ~1929 — 11 household members
| Surname | Connelly |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 5 |
| 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 James Connelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Connelly
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Catharine Connelly
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Donnelly
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Connelly
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Connelly
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Connelly
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Connelly
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Connelly
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Donnelly
Sibling · 1940 · age 12
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-t0627-01659-00569)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stella Cefalo | 48 | Wife | — | Italy |
| 2 | Charles Cefalo | 25 | Son | Bakers Helper | Massachusetts |
| 3 | Alberty Cefalo | 23 | Son | Usher | Massachusetts |
| 4 | Angelo Cefalo | 19 | Son | New Worker | Massachusetts |
| 5 | Mary Cefalo | 16 | Daughter | — | Massachusetts |
| 6 | Eleanor Cefalo | 13 | Daughter | — | Massachusetts |
| 7 | Joseph Cefalo | 11 | Son | — | Massachusetts |
| 8 | Jean Cefalo | 8 | Daughter | — | Massachusetts |
| 9 | John Cefalo | 4 | Son | — | Massachusetts |
| 10 | Edward Donovan | 24 | Head | Trucker | Massachusetts |
| 11 | Rita Donovan | 22 | Wife | — | Massachusetts |
| 12 | Rita Donovan | 2 | Daughter | — | Massachusetts |
| 13 | Edward Donovan | 1 | Son | — | Massachusetts |
| 14 | Helen Donovan | 0 | Daughter | — | Massachusetts |
| 15 | Michael Connelly | 57 | Head | — | Eire |
| 16 | Mary Connelly | 53 | Wife | — | Canada English |
| 17 | Gertrude Connelly | 24 | Daughter | Candy Maker | Massachusetts |
| 18 | Joseph Connelly | 20 | Son | Truck Driver | Massachusetts |
| 19 | Francis Connelly | 18 | Son | Landscaper | Massachusetts |
| 20 | Anna Connelly | 16 | Daughter | — | Massachusetts |
| 21 | Catharine Connelly | 14 | Daughter | — | Massachusetts |
| 22 | James Connelly THIS PERSON | 11 | Son | — | Massachusetts |
| 23 | John Connelly | 9 | Son | — | Massachusetts |
| 24 | Mary Donnelly | 28 | Daughter | Packer | Massachusetts |
| 25 | Mary Donnelly | 12 | Daughter | — | Massachusetts |
| 26 | William Hawkins | 45 | Head | Salesman | Massachusetts |
| 27 | Ruth Hawkins | 45 | Wife | — | Massachusetts |
| 28 | Charlotte Hawkins | 15 | Daughter | — | Massachusetts |
| 29 | Robert Hawkins | 13 | Son | — | Massachusetts |
| 30 | William Hawkins | 3 | Son | — | Massachusetts |
| 31 | Henry Lorr | 50 | Lodger | — | Eire |
| 32 | Albert Ringer | 37 | Head | Truck Driver | Massachusetts |
| 33 | Mary Ringer | 39 | Wife | — | Massachusetts |
| 34 | Mary Ringer | 19 | Daughter | File Clerk | Massachusetts |
| 35 | Albert Ringer | 17 | Son | New Worker | Massachusetts |
| 36 | James Ringer | 16 | Son | New Worker | Massachusetts |
| 37 | Francis Ringer | 14 | Son | — | Massachusetts |
| 38 | Dorothy Ringer | 12 | Daughter | — | Massachusetts |
| 39 | Jeanette Ringer | 2 | Daughter | — | Massachusetts |
| 40 | Ulrick Bouchard | 65 | Father in law | — | Canada French |
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)