JC
James Cassidy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this James Cassidy across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed), with identified parents James & Joseph — first a head (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Clerk |
| Industry | Brokerage |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Clerk |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1911 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Cassidy | Head | — | 29 | ~1911 |
| Helen Cassidy | Spouse | — | 25 | ~1915 |
| Agnes Cassidy | Daughter | — | 5 | ~1935 |
| James Cassidy | Son | — | 1 | ~1939 |
Census Appearances
1920
Hudson, New …
Son, age 9
Hudson, New Jersey · implied b. ~1911 — 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 | 9 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Son, age 19
Hudson, New Jersey · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James III |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Pennsylvania |
| Occupation | Errand boy |
| Industry | Stock Exchange |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Head, age 29
Hudson-County, New Jersey · implied b. ~1911 — 4 household members
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Occupation | Clerk |
| Industry | Brokerage |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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: father James Cassidy (~0.92 confidence) and father Joseph Cassidy (~0.92 confidence) and mother Agnes Cassidy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Cassidy
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Joseph Cassidy
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Agnes Cassidy
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Cassidy
Head · 1940 · age 29 · b. ~1911 · New Jersey
★ 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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02403-00320)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Cassidy THIS PERSON | 29 | Head | Clerk | New Jersey |
| 42 | Helen Cassidy | 25 | Wife | — | New Jersey |
| 43 | Agnes Cassidy | 5 | Daughter | — | New Jersey |
| 44 | James Cassidy | 1 | Son | — | New Jersey |
| 45 | Thomas Morton | 41 | Head | Maintenance | New Jersey |
| 46 | Helen Morton | 31 | Wife | — | New Jersey |
| 47 | Mary Ann Morton | 4 | Daughter | — | New Jersey |
| 48 | Harry Smith | 49 | Head | Handler | New York |
| 49 | John Brown | 75 | Head | — | New York |
| 50 | Maude Brown | 43 | Wife | — | Pennsylvania |
| 51 | John Brown | 38 | Son | — | New Jersey |
| 52 | Elizabeth Brown | 78 | Sister | — | New York |
| 53 | Alvin Brown | 35 | Head | Engineer | New Jersey |
| 54 | Millie Brown | 35 | Wife | — | New Jersey |
| 55 | Carol Brown | 4 | Daughter | — | New Jersey |
| 56 | Robert Calandriello | 31 | Head | Truck Driver | New Jersey |
| 57 | Dorothy Calandriello | 27 | Wife | — | New Jersey |
| 58 | Robert Calandriello | 7 | Son | — | New Jersey |
| 59 | Rose Calandriello | 3 | Daughter | — | New Jersey |
| 60 | Stanley Kowalski | 58 | Head | Mechanic | Poland |
| 61 | Pauline Kowalski | 48 | Wife | — | Poland |
| 62 | Stella Kowalski | 16 | Daughter | — | New Jersey |
| 63 | Frank Kowalski | 11 | Son | — | New Jersey |
| 64 | Michael Stiefel | 38 | Head | Brakeman | Austria |
| 65 | Veronica Stiefel | 37 | Wife | — | Austria |
| 66 | Michael Stiefel | 14 | Son | — | New Jersey |
| 67 | Margaret Stiefel | 11 | Daughter | — | New Jersey |
| 68 | Anna Stiefel | 8 | Daughter | — | New Jersey |
| 69 | Mary Stiefel | 61 | Head | — | Austria |
| 70 | Elmer Keener | 45 | Head | — | New Jersey |
| 71 | Gertrude Keener | 50 | Wife | — | New Jersey |
| 72 | James Keener | 8 | Son | — | New Jersey |
| 73 | Elmer Keener | 6 | Son | — | New Jersey |
| 74 | Louis Hoffman | 12 | Stepchild | — | New Jersey |
| 75 | Joseph Yoschak | 54 | Head | — | Austria |
| 76 | Mary Yoschak | 50 | Wife | — | Austria |
| 77 | Helen Yoschak | 18 | Daughter | Dressmaker | New Jersey |
| 78 | George Popovitch | 46 | Head | Machinist | Czechoslovakia |
| 79 | Helen Popovitch | 40 | Wife | — | Czechoslovakia |
| 80 | John Popovitch | 19 | Son | Shipping Clerk | Germany |
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)