JC
John Cassidy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Cassidy across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents John & Mary — first a head (b.~1901), then head of a 3-person household.
Age 29
b. ~1901
Male
Head
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Cassidy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Baggage |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Baggage |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1901 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Cassidy | Daughter | — | ~1930 | |
| John Cassidy | Head | — | 29 | ~1901 |
| Elizabeth Cassidy | Other | — | 23 | ~1907 |
Census Appearances
1910
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Johnnie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 19
Cook, Illinois · implied b. ~1901 — 6 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 | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 29
Cook, Illinois · implied b. ~1901 — 3 household members
| Surname | Cassidy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Baggage |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father John Cassidy (~0.92 confidence) and mother Mary Cassidy (~0.92 confidence) and father John Cassidy (~0.92 confidence) and mother Mary Cassidy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Cassidy
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Mary Cassidy
b. ~1863
Source mother
● Household
· direct · ~0.92
Father
John Cassidy
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Cassidy
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cassidy
Head · 1930 · age 29 · b. ~1901 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
48 people indexed on this census page (ia:1930:illinoiscensus00reel448:0542)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gustaf Gustafson | 49 | Head | Proprietor | Sweden |
| 2 | Clara Gustafson | 55 | Wife-H | — | Denmark |
| 3 | Lloyd M. Gustafson | 19 | Son | Shoemaker | Illinois |
| 4 | Miller E. Nelson | 26 | Head | Claims Clerk | Illinois |
| 5 | Edna D. Nelson | 25 | Wife-H | — | Illinois |
| 6 | Richard W. Hupe | 47 | Head | Commercial Agent | Illinois |
| 7 | Fannie Hupe | 45 | Wife-H | — | Illinois |
| 8 | Eleanor F. Hupe | 19 | Daughter | — | Illinois |
| 9 | Richard A. Hupe | 8 | Son | — | Illinois |
| 10 | Adolph J. Hansen | 57 | Head | Proprietor | Wisconsin |
| 11 | Nellie Hansen | 55 | Wife-H | — | Wisconsin |
| 12 | Lillian Gason | 47 | Head | — | Illinois |
| 13 | Joseph J. Gason | 25 | Son | Collector | Illinois |
| 14 | Ray W. Gason | 20 | Son | Machine Hand | Illinois |
| 15 | Mabel J. Gason | 15 | Daughter | — | Illinois |
| 16 | Julius R. Hansen | 45 | Head | Selling | Illinois |
| 17 | William J. Hansen | 10 | Son | — | Illinois |
| 18 | Mildred Hansen | 12 | Daughter | — | Illinois |
| 19 | Augusta Holtman | 64 | Head | — | Germany |
| 20 | Henry Gerso | 39 | Head | Cement Laborer | Austria |
| 21 | Caroline Gerso | 36 | Wife-H | — | Austria |
| 22 | Mary Gerso | 15 | Daughter | — | Illinois |
| 23 | Louise Gerso | 13 | Daughter | — | Illinois |
| 24 | Harold J. Gerso | 7 | Son | — | Illinois |
| 25 | John F. Haas | 45 | Head | Policeman | Illinois |
| 26 | Hilda Haas | 39 | Wife-H | — | Germany |
| 27 | John F. Haas | 16 | Son | Clerical Work | Illinois |
| 28 | Helen M. Haas | 14 | Daughter | — | Illinois |
| 29 | Lester A. Haas | 10 | Son | — | Illinois |
| 30 | Elizabeth Cassidy | 58 | Head | — | Ireland |
| 31 | Peter Cassidy | 24 | Son | Clerical Work | Illinois |
| 32 | William J. Cassidy | 21 | Son | Laborer | Illinois |
| 33 | John J. Cassidy THIS PERSON | 29 | Head | Baggage | Illinois |
| 34 | Elizabeth R. Cassidy | 23 | Wife-H | — | Illinois |
| 35 | Elizabeth L. Cassidy | 0 | Daughter | — | Illinois |
| 36 | William A. Johnson | 55 | Head | Foreman | Ohio |
| 37 | Minnie Johnson | 47 | Wife-H | — | Illinois |
| 38 | Harold C. Johnson | 21 | Son | Chauffeur | Illinois |
| 39 | Vernon A. Johnson | 14 | Son | — | Illinois |
| 40 | Jeanette L. Johnson | 12 | Daughter | — | Illinois |
| 41 | Paul G. Detorella | 39 | Head | Baggage Master | Illinois |
| 42 | Christina C. Detorella | 40 | Wife-H | — | Illinois |
| 43 | Walter H. Detorella | 11 | Son | — | Illinois |
| 44 | Amanda C. Detorella | 9 | Daughter | — | Illinois |
| 45 | Raymond L. Detorella | 4 | Son | — | Illinois |
| 46 | Walter H. Hansen | 36 | Head | Bookkeeper | Illinois |
| 47 | Bertha R. Hansen | 35 | Wife-H | — | Illinois |
| 48 | Lucille R. Hansen | 7 | Daughter | — | Illinois |
Pedigree Summary
John
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)