JC
John Cassidy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Darlington-County, South Carolina
Our Model Tree links this John Cassidy across the 1920, 1930 and 1940 US Censuses in Darlington-County, South Carolina (XGBoost, ~Confirmed), with identified parents Killiam & Rozier — first a head (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Male
Head
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Darlington-County, South Carolina |
| Surname | Cassidy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Hartsville |
| 1935 Residence (County) | Darlington |
| Additional Details | |
| Occupation | Machinist |
| Industry | Paper Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Machinist |
| Township / Ward | Hartsville |
| Est. Birth Year | ~1902 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Barbara Cassidy | Daughter | — | 10 | ~1930 |
| John Cassidy | Head | — | 38 | ~1902 |
| Brooks Cassidy | Son | — | 12 | ~1928 |
| Ruth Cassidy | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Darlington, South …
Son, age 18
Darlington, South Carolina · implied b. ~1902 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Darlington, South …
Head, age 28
Darlington, South Carolina · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassady |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 25 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Laborer |
| Industry | Sonoco Prod Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 10 |
| Veteran | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Darlington-County, South …
Head, age 38
Darlington-County, South Carolina · implied b. ~1902 — 4 household members
| Surname | Cassidy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Hartsville |
| 1935 Residence (County) | Darlington |
| Occupation | Machinist |
| Industry | Paper Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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: father Killiam Cassidy (~0.92 confidence) and mother Rozier Cassidy (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Killiam Cassidy
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Rozier Cassidy
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cassidy
Head · 1940 · age 38 · b. ~1902 · South Carolina
★ 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 — Darlington-County, South Carolina
Open full size
1940 US Federal Census — Darlington-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03803-00659)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Billie Smith | 6 | Son | — | South Carolina |
| 42 | Mary Francis Smith | 5 | Daughter | — | South Carolina |
| 43 | Janice Smith | 2 | Daughter | — | South Carolina |
| 44 | Louise Truett | 25 | Sister-in-law | Dace Dept. | South Carolina |
| 45 | J. D. Dempsey | 39 | Head | Mechanic | Georgia |
| 46 | Odessa Dempsey | 32 | Wife | — | Georgia |
| 47 | J. D. Jr. Dempsey | 11 | Son | — | Georgia |
| 48 | Betty Dempsey | 7 | Daughter | — | Georgia |
| 49 | Donnie Dempsey | 5 | Son | — | South Carolina |
| 50 | Carson Blackwell | 38 | Head | Salesman | South Carolina |
| 51 | Mary Blackwell | 32 | Wife | — | South Carolina |
| 52 | Robert Blackwell | 13 | Son | — | South Carolina |
| 53 | Gerald Blackwell | 8 | Son | — | South Carolina |
| 54 | (Pat) T. J. Murphy | 39 | Head | Manager | South Carolina |
| 55 | Josephine Murphy | 30 | Wife | — | South Carolina |
| 56 | Thomas Murphy | 7 | Son | — | South Carolina |
| 57 | Theodore M. Murphy | 3 | Son | — | South Carolina |
| 58 | Grover Blasingame | 52 | Head | Machinist | Georgia |
| 59 | Estelle Blasingame | 50 | Wife | — | South Carolina |
| 60 | Truman Blasingame | 25 | Son | Clerical Work | Virginia |
| 61 | Harold Blasingame | 20 | Son | — | Virginia |
| 62 | Helen Blasingame | 20 | Daughter | — | Virginia |
| 63 | Raymond Blasingame | 15 | Son | — | Virginia |
| 64 | Earle Dickerson | 28 | Head | Laborer | Georgia |
| 65 | Millie Mae Dickerson | 23 | Wife | — | South Carolina |
| 66 | John Cassidy THIS PERSON | 38 | Head | Machinist | South Carolina |
| 67 | Ruth Cassidy | 34 | Wife | — | Florida |
| 68 | Brooks Cassidy | 12 | Son | — | South Carolina |
| 69 | Barbara Cassidy | 10 | Daughter | — | South Carolina |
| 70 | Robert H. Porter | 38 | Head | Pressman | South Carolina |
| 71 | Gertrude Porter | 37 | Wife | — | South Carolina |
| 72 | James E. Porter | 14 | Son | — | South Carolina |
| 73 | Margaret Ann Porter | 10 | Daughter | — | South Carolina |
| 74 | J. Boyd Nelson | 29 | Head | Carpenter | South Carolina |
| 75 | Elizabeth Nelson | 26 | Wife | — | South Carolina |
| 76 | J. Boyd Jr. Nelson | 8 | Son | — | South Carolina |
| 77 | Charles B. Nelson | 4 | Son | — | South Carolina |
| 78 | Rachel Ann Nelson | 2 | Daughter | — | South Carolina |
| 79 | Hudson King | 32 | Head | Dace Dept. | South Carolina |
| 80 | Juanita King | 27 | Wife | — | South Carolina |
Pedigree Summary
John
Gen 1 · 2 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)