JC
James Cassidy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this James Cassidy across the 1910, 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed), with identified parents Ellen & John — first a son (b.~1902), then head of a 3-person household.
Age 28
b. ~1902
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Clerk |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Chelsea City |
| 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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Ellen Cassidy | Head | — | 54 | ~1876 |
| Margaret Cassidy | Daughter | — | 26 | ~1904 |
| James Cassidy | Son | — | 28 | ~1902 |
Census Appearances
1910
Suffolk, Massachusetts
Son, age 11
Suffolk, Massachusetts · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Son, age 20
Suffolk, Massachusetts · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | James L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 28
Suffolk, Massachusetts · implied b. ~1902 — 3 household members
| Surname | Cassidy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 (1910, 1920 and 1930) in Suffolk, Massachusetts, using XGBoost record linkage. Identified parents: mother Ellen Cassidy (~0.92 confidence) and father John Cassidy (~0.92 confidence) and mother Mary Cassidy (~0.92 confidence) and mother Ellen Cassidy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ellen Cassidy
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
John Cassidy
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Mary Cassidy
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Ellen Cassidy
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Cassidy
Son · 1930 · age 28 · b. ~1902 · Massachusetts
★ You are viewing this record
Sibling
Margaret Cassidy
Sibling · 1930 · age 26
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
1930 US Federal Census — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel960:0057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Simms | 34 | Head | Veterinarian | Massachusetts |
| 2 | Katherine Simms | 36 | Wife | — | Massachusetts |
| 3 | Kathleen Simms | 6 | Daughter | — | Massachusetts |
| 4 | Ellen Cassidy | 54 | Head | — | Ireland |
| 5 | James Cassidy THIS PERSON | 28 | Son | Clerk | Massachusetts |
| 6 | Margaret Cassidy | 26 | Daughter | Clerk | Massachusetts |
| 7 | Raymond Sherby | 28 | Head | Laborer | Massachusetts |
| 8 | Mary Sherby | 28 | Wife | — | Massachusetts |
| 9 | Ellen E. Sherby | 6 | Daughter | — | Massachusetts |
| 10 | Theresa A. Sherby | 4 | Daughter | — | Massachusetts |
| 11 | Joseph Hudson | 42 | Head | Carpenter | Newfoundland |
| 12 | Lydia Hudson | 37 | Wife | — | Newfoundland |
| 13 | Lester Hudson | 17 | Son | — | Massachusetts |
| 14 | James E. Hudson | 15 | Son | — | Massachusetts |
| 15 | Dorothy E. Hudson | 13 | Daughter | — | Massachusetts |
| 16 | Charles E. Hudson | 11 | Son | — | Massachusetts |
| 17 | Ruth E. Hudson | 8 | Daughter | — | Massachusetts |
| 18 | John Karasabian | 42 | Head | — | Armenia |
| 19 | Anthony Sebonian | 31 | Lodger | Shoe Worker | Armenia |
| 20 | Alice Karasabian | 27 | Wife | — | Chelsea |
| 21 | Henry Karasabian | 10 | Son | — | Chelsea |
| 22 | — | None | — | — | — |
| 23 | Charles Dronikio | 35 | Head | Manager | Greece |
| 24 | Lena Dronikio | 30 | Wife | — | Massachusetts |
| 25 | Gloria Dronikio | 3 | Daughter | — | Massachusetts |
| 26 | Frank Margolis | 48 | Head | Laborer | Russia |
| 27 | Katherine Margolis | 40 | Wife | — | Russia |
| 28 | Harriet Margolis | 23 | Son | — | Russia |
| 29 | Samuel Margolis | 19 | Son | — | Russia |
| 30 | Jack Margolis | 17 | Son | — | Massachusetts |
| 31 | Morris Margolis | 15 | Son | — | Massachusetts |
| 32 | Lillian Margolis | 12 | Daughter | — | Massachusetts |
| 33 | George Steinburg | 58 | Head | Merchant | Russia |
| 34 | David Steinburg | 21 | Son | — | Massachusetts |
| 35 | James Gilliam | 36 | Head | Chauffeur | Massachusetts |
| 36 | Mary Gilliam | 35 | Wife | — | Newfoundland |
| 37 | Ruth M. Gilliam | 6 | Daughter | Operator | Massachusetts |
| 38 | James Gilliam | 4 | Son | — | Massachusetts |
| 39 | Michael Karpluk | 50 | Head | Shoe Worker | Russia |
| 40 | Mary Karpluk | 47 | Wife | — | Russia |
| 41 | Helen Karpluk | 17 | Daughter | — | Massachusetts |
| 42 | Charles Krakowsky | 34 | Lodger | Meat Man | Russia |
| 43 | Robert Sidney | 45 | Head | Laborer | Newfoundland |
| 44 | Bertha Sidney | 42 | Wife | — | Newfoundland |
| 45 | James M. Sidney | 20 | Son | — | Massachusetts |
| 46 | John Sexton | 31 | Head | Agent | Massachusetts |
| 47 | Mary Sexton | 35 | Wife | — | Newfoundland |
| 48 | Alice Sexton | 2 | Daughter | — | Massachusetts |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
Pedigree Summary
James + 1 sibling
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)