JC
John Cassidy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this John Cassidy across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 3-person household.
Age 71
b. ~1869
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Cassidy |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1869 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Cassidy | Daughter | — | 40 | ~1900 |
| John Cassidy | Head | — | 71 | ~1869 |
| Catherine Cassidy | Spouse | — | 67 | ~1873 |
Census Appearances
1920
Kings, New …
Head, age 48
Kings, New York · implied b. ~1872 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Ireland |
| Occupation | Police man |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Head, age 61
Kings, New York · implied b. ~1869 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 21 |
| Father's Birthplace | New York |
| Mother's Birthplace | Canada |
| Occupation | Brickhandler |
| Industry | Vessels |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2500 |
| Radio Set | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Head, age 71
Kings-County, New York · implied b. ~1869 — 3 household members
| Surname | Cassidy |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Cassidy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Cassidy
Head · 1940 · age 71 · b. ~1869 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
16 people indexed on this census page (nara:1940:m-t0627-02583-00841)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lillian Rennshook | 28 | Wife | — | New York |
| 2 | Joseph Ronaldo | 52 | Head | Furrier | Italy |
| 3 | Antoinette Ronaldo | 29 | Wife | — | Italy |
| 4 | Charles Lamino | 45 | Head | Furrier | Italy |
| 5 | Rose Lamino | 44 | Wife | — | Italy |
| 6 | Patrick Lamino | 28 | Son | — | Italy |
| 7 | Eugene Lamino | 24 | Son | Furrier | New York |
| 8 | Angelina Lamino | 22 | Daughter | Cashier | New York |
| 9 | Bernard Lamino | 20 | Son | — | New York |
| 10 | Mildred Parent | 65 | Head | — | New York |
| 11 | William Langrish | 64 | Cousin | — | England |
| 12 | August Breyer | 46 | Head | Shipping Clerk | New York |
| 13 | Catherine Breyer | 47 | Wife | — | New York |
| 14 | John E. Cassidy THIS PERSON | 71 | Head | — | New York |
| 15 | Catherine B. Cassidy | 67 | Wife | — | New York |
| 16 | Catherine Cassidy | 40 | Daughter | — | New York |
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)