JC
John Cassidy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this John Cassidy across the 1920, 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed), with identified parents Ella & John — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | Cassidy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Euclid |
| 1935 Residence (County) | Cuyahoga |
| Additional Details | |
| Occupation | Grinder |
| Industry | Tool mfg. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 144 |
| Highest Grade | H-2 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Grinder |
| Township / Ward | Cleveland |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| John Cassidy | Head | — | 62 | ~1878 |
| John Cassidy | Son | — | 23 | ~1917 |
| Bruce Cassidy | Son | — | 30 | ~1910 |
Census Appearances
1920
Cuyahoga, Ohio
Son, age 3
Cuyahoga, Ohio · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 13
Cuyahoga, Ohio · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Son, age 23
Cuyahoga-County, Ohio · implied b. ~1917 — 3 household members
| Surname | Cassidy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Euclid |
| 1935 Residence (County) | Cuyahoga |
| Occupation | Grinder |
| Industry | Tool mfg. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 144 |
| Highest Grade | H-2 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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. Identified parents: mother Ella Cassidy (~0.92 confidence) and father John Cassidy (~0.92 confidence) and father John Cassidy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ella Cassidy
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
John Cassidy
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John Cassidy
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Cassidy
Son · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
Bruce Cassidy
Sibling · 1940 · age 30
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 — Cuyahoga-County, Ohio
Open full size
1940 US Federal Census — Cuyahoga-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03229-00386)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Theresa Geraghty | 64 | Wife | — | Canada French |
| 42 | Luke Geraghty | 23 | Son | Bartender | Canada French |
| 43 | John Geraghty | 21 | Son | Stock Boy | Canada French |
| 44 | William Geraghty | 25 | Son | Tractor Driver | Canada French |
| 45 | Joanne Geraghty | 1 | Granddaughter | — | Ohio |
| 46 | James Normile | 31 | Son-in-law | Clerk | Pennsylvania |
| 47 | Lillian Normile | 28 | Daughter | — | Canada French |
| 48 | Leo Gauthier | 49 | Head | Yard Conductor | Ohio |
| 49 | Grace Gauthier | 48 | Wife | — | Ohio |
| 50 | Germaine Gauthier | 13 | Daughter | — | Ohio |
| 51 | Henry Alcorn | 54 | Head | Auditor | Canada French |
| 52 | Margaret Alcorn | 40 | Wife | — | Connecticut |
| 53 | Madi Alcorn | 10 | Daughter | — | Ohio |
| 54 | Clara Brennan | 50 | Head | Telephone Operator | Ohio |
| 55 | Anna Brennan | 53 | Sister | Housekeeper | Ohio |
| 56 | Alfred Buehrer | 45 | Lodger | Fireman | Germany |
| 57 | Mabel Kolling | 54 | Head | — | Michigan |
| 58 | Earl Kolling | 31 | Son | Fireman | Ohio |
| 59 | Jean Kolling | 16 | Daughter | — | Ohio |
| 60 | James Seeley | 35 | Head | Insurance Agent | Indiana |
| 61 | Margaret Seeley | 42 | Wife | — | Kentucky |
| 62 | William Lillie | 23 | Lodger | Office Clerk | West Virginia |
| 63 | John Cassidy | 62 | Head | Testing Inspector | Illinois |
| 64 | Bruce Cassidy | 30 | Son | Foundry Clerk | Ohio |
| 65 | John Cassidy THIS PERSON | 23 | Son | Grinder | Ohio |
| 66 | — | None | — | — | — |
| 67 | John Princie | 52 | Head | Meat Cutter | Austria |
| 68 | Dorothy Princie | 19 | Daughter | Telephone Operator | Ohio |
| 69 | Adeline Princie | 14 | Daughter | — | Ohio |
| 70 | Carl Princie | 12 | Son | — | Ohio |
| 71 | Walter Princie | 7 | Son | — | Ohio |
| 72 | Ella Reed | 81 | Head | — | Ohio |
| 73 | Florence Nolan | 47 | Niece | Secretary | Ohio |
| 74 | Jane Connolly | 70 | Head | — | Pennsylvania |
| 75 | Jane Connolly | 41 | Daughter | Clerk (Senior) | Pennsylvania |
| 76 | Agnes Connolly | 28 | Daughter | Private Nurse | Pennsylvania |
| 77 | Walter Choynowski | 68 | Head | Fireman - Boat | Poland |
| 78 | Frances Choynowski | 59 | Wife | — | Germany |
| 79 | Thomas Barris | 28 | Head | Shipping Clerk | Scotland |
| 80 | Mildred Barris | 26 | Wife | — | Connecticut |
Pedigree Summary
John + 1 sibling
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)