JC
James Cassidy — 1940 US Census Record
Model Tree available1940 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), with identified parents Agnes & Agnes — first a head (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
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 | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Laborer |
| Industry | Park Construction |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 690 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Chelsea |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Alice Cassidy | Spouse | — | 25 | ~1915 |
| James Cassidy | Head | — | 27 | ~1913 |
| James Cassidy | Son | — | 1 | ~1939 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 7
Suffolk, Massachusetts · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 17
Suffolk, Massachusetts · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Chauffeur |
| Industry | Trucking |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 27
Suffolk-County, Massachusetts · implied b. ~1913 — 3 household members
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea |
| 1935 Residence (County) | Suffolk |
| Occupation | Laborer |
| Industry | Park Construction |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 690 |
| Highest Grade | Hs 1 |
| 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 James Cassidy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Agnes Cassidy (~0.92 confidence) and mother Agnes Cassidy (~0.92 confidence) and father James Cassidy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Agnes Cassidy
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Agnes Cassidy
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
James Cassidy
b. ~1892
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Cassidy
Head · 1940 · age 27 · b. ~1913 · 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-t0627-01641-00356)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rosalie Kuzas | 67 | Mother-in-law | Charwoman | Poland |
| 42 | Walter Kuzas | 32 | Brother-in-law | Laborer | Massachusetts |
| 43 | John Kuzas | 27 | Brother-in-law | Laborer | Massachusetts |
| 44 | George R. Whitcomb | 35 | Head | Paper Cutter | Massachusetts |
| 45 | Jessie Whitcomb | 30 | Wife | Binder | Massachusetts |
| 46 | Jessie Whitcomb | 5 | Daughter | — | Massachusetts |
| 47 | John Cristoforo | 40 | Head | Laborer | Italy |
| 48 | Amelia Cristoforo | 35 | Wife | — | Italy |
| 49 | Herman Cristoforo | 21 | Son | Chauffeur-Salesman | Massachusetts |
| 50 | James Cristoforo | 20 | Son | Chauffeur'S Helper | Massachusetts |
| 51 | Mary Cristoforo | 22 | Daughter | — | Massachusetts |
| 52 | Charles Cristoforo | 20 | Son | New Worker | Massachusetts |
| 53 | Americo Cristoforo | 18 | Son | — | Massachusetts |
| 54 | Albert Cristoforo | 16 | Son | — | Massachusetts |
| 55 | John Jr. Cristoforo | 13 | Son | — | Massachusetts |
| 56 | Alphonse Peraci | 44 | Head | Pressman | Italy |
| 57 | Mary Peraci | 40 | Wife | Lacemaker | Italy |
| 58 | Rosaria Peraci | 17 | Daughter | — | Massachusetts |
| 59 | Stella Peraci | 15 | Daughter | — | Massachusetts |
| 60 | Catena Peraci | 14 | Son | — | Massachusetts |
| 61 | Charles Kaliris | 30 | Head | Chauffeur | Massachusetts |
| 62 | Loretta Kaliris | 28 | Wife | — | Massachusetts |
| 63 | Charles Jr. Kaliris | 5 | Son | — | Massachusetts |
| 64 | James Cassidy THIS PERSON | 27 | Head | Laborer | Massachusetts |
| 65 | Alice Cassidy | 25 | Wife | — | Massachusetts |
| 66 | James Jr. Cassidy | 1 | Son | — | Massachusetts |
| 67 | Elizabeth Janulewicz | 46 | Head | Cleaning Maid | Lithuania |
| 68 | Josephine Janulewicz | 20 | Daughter | Beautician | Pennsylvania |
| 69 | Anthony Janulewicz | 18 | Son | New Worker | Massachusetts |
| 70 | Elizabeth Callahan | 55 | Head | — | Eire |
| 71 | Albert H. Donadei | 56 | Head | Machinist | New York |
| 72 | Albert Jr. Donadei | 25 | Son | Laborer | Massachusetts |
| 73 | Paul Donadei | 20 | Son | Laborer | Massachusetts |
| 74 | Eva Donadei | 20 | Daughter-in-law | — | Massachusetts |
| 75 | Delia Haskell | 62 | Head | — | Massachusetts |
| 76 | William Haskell | 35 | Son | Stock Clerk | Massachusetts |
| 77 | Helen De Young | 34 | Head | — | Poland |
| 78 | Frances De Young | 15 | Daughter | — | Massachusetts |
| 79 | Harold De Young | 14 | Son | — | Massachusetts |
| 80 | George De Young | 12 | Son | — | Massachusetts |
Pedigree Summary
James
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)