JC
James Cassidy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Cassidy across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 8-person household.
Age 49
b. ~1891
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Longshoreman |
| Industry | Dock Freight |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 576 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Longshoreman |
| Township / Ward | Chelsea |
| Est. Birth Year | ~1891 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Cassidy | Head | — | 49 | ~1891 |
| Mildred Cassidy | Daughter | — | 13 | ~1927 |
| Robert Cassidy | Son | — | 24 | ~1916 |
| Madeline Cassidy | Daughter | — | 14 | ~1926 |
| Irene Cassidy | Daughter | — | 21 | ~1919 |
| Agnes Cassidy | Spouse | — | 49 | ~1891 |
| Phillip Cassidy | Son | — | 17 | ~1923 |
| Isabella Cassidy | Daughter | — | 10 | ~1930 |
Census Appearances
1920
Suffolk, Massachusetts
Head, age 28
Suffolk, Massachusetts · implied b. ~1892 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Massachusetts |
| Occupation | Chauffeur |
| Industry | Distillery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Head, age 38
Suffolk, Massachusetts · implied b. ~1892 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 19 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Massachusetts |
| Occupation | Chauffeur |
| Industry | Trucking |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 16 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 49
Suffolk-County, Massachusetts · implied b. ~1891 — 8 household members
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea |
| 1935 Residence (County) | Suffolk |
| Occupation | Longshoreman |
| Industry | Dock Freight |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 576 |
| Highest Grade | No 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 James Cassidy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cassidy
Head · 1940 · age 49 · b. ~1891 · Massachusetts
★ You are viewing this record
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-t0627-01641-00357)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Rybiński | 59 | Head | Blacksmith | Poland |
| 2 | Martha Rybiński | 58 | Wife | — | Poland |
| 3 | Walter Rybiński | 24 | Son | Laborer | Massachusetts |
| 4 | Andrew Rybiński | 20 | Son | Machine Operator | Massachusetts |
| 5 | Irene Rybiński | 20 | Daughter | Beautician | Massachusetts |
| 6 | James Cassidy THIS PERSON | 49 | Head | Longshoreman | Massachusetts |
| 7 | Agnes Cassidy | 49 | Wife | — | Massachusetts |
| 8 | Robert Cassidy | 24 | Son | Helper | Massachusetts |
| 9 | Irene Cassidy | 21 | Daughter | Seamstress | Massachusetts |
| 10 | Phillip Cassidy | 17 | Son | — | Massachusetts |
| 11 | Madeline Cassidy | 14 | Daughter | — | Massachusetts |
| 12 | Mildred Cassidy | 13 | Daughter | — | Massachusetts |
| 13 | Isabella Cassidy | 10 | Daughter | — | Massachusetts |
| 14 | Jacob Schwartz | 51 | Head | Proprietor Salesman | Russia |
| 15 | Jennie Schwartz | 44 | Wife | — | Russia |
| 16 | Edith Schwartz | 20 | Daughter | Salesgirl | Massachusetts |
| 17 | George Schwartz | 15 | Son | News Worker | Massachusetts |
| 18 | Florence Schwartz | 13 | Daughter | — | Massachusetts |
| 19 | Albert Schwartz | 12 | Son | — | Massachusetts |
| 20 | Charles Bright | 52 | Head | Teamster | Massachusetts |
| 21 | Mary Bright | 51 | Wife | — | Massachusetts |
| 22 | William Bright | 17 | Son | News Worker | Massachusetts |
| 23 | Robert Bright | 15 | Son | — | Massachusetts |
| 24 | Winifred Bright | 13 | Daughter | — | Massachusetts |
| 25 | Paul Bright | 11 | Son | — | Massachusetts |
| 26 | Arthur Brown | 25 | Son-in-law | Machine Operator | Canada English |
| 27 | Louise Brown | 24 | Daughter | — | Massachusetts |
| 28 | William Haller | 26 | Son-in-law | Teamster | Canada English |
| 29 | Margaret Haller | 21 | Daughter | — | Massachusetts |
| 30 | William Crowley | 18 | Nephew | Laborer | Massachusetts |
| 31 | Lawrence Crowley | 13 | Nephew | — | Massachusetts |
| 32 | Charles P. Thomas | 55 | Head | Teamster | Massachusetts |
| 33 | Jessie Thomas | 56 | Wife | — | Massachusetts |
| 34 | Hazel Thomas | 35 | Daughter | Operator | Massachusetts |
| 35 | Roscoe Thomas | 22 | Son | Office Boy | Massachusetts |
| 36 | Mildred Thomas | 20 | Daughter | — | Massachusetts |
| 37 | John M. Donovan | 56 | Lodger | Supervisor | Massachusetts |
| 38 | Max Sugarman | 55 | Head | Proprietor Salesman | Russia |
| 39 | Fannie Sugarman | 56 | Wife | — | Russia |
| 40 | Saul Sugarman | 22 | Son | Laborer | Massachusetts |
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)