JC
James Carroll — 1930 US Census Record
Model Tree available1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this James Carroll across the 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents James & Mary — first a son (b.~1905), then head of a 2-person household.
Age 25
b. ~1905
Male
Son
Born: Pennsylvania
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Carroll |
| Given Name | James M. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 19 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1905 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Carroll | Head | — | 46 | ~1884 |
| James Carroll | Son | — | 25 | ~1905 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Son, age 15
Allegheny, Pennsylvania · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 25
Allegheny, Pennsylvania · implied b. ~1905 — 2 household members
| Surname | Carroll |
| Given Name | James M. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 19 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Carroll across 3 US Census years (1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father James Carroll (~0.92 confidence) and mother Mary Carroll (~0.92 confidence) and father James Carroll (~0.92 confidence) and mother Mary Carroll (~0.92 confidence) and father James Carroll (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Carroll
b. ~1846
Source father
● Household
· direct · ~0.92
Mother
Mary Carroll
b. ~1848
Source mother
● Household
· direct · ~0.92
Father
James Carroll
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Carroll
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
James Carroll
b. ~1884
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Carroll
Son · 1930 · age 25 · b. ~1905 · Pennsylvania
★ 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 — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1976:0579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | W. Howard | 17 | Son | Salesman | Pennsylvania |
| 52 | Marguerite Howard | 33 | Daughter | — | Pennsylvania |
| 53 | Thomas A. Fainton | 25 | Head | Driver | Pennsylvania |
| 54 | Blanche Fainton | 64 | Wife-H | — | England |
| 55 | James F. Leonard | 36 | Head | Plumber | Pennsylvania |
| 56 | Elizabeth L. Leonard | 34 | Wife-H | — | Pennsylvania |
| 57 | James R. Leonard | 5 | Son | — | Pennsylvania |
| 58 | Francis W. Leonard | 4 | Son | — | Pennsylvania |
| 59 | Daniel C. Dauber | 15 | Step-son | — | Pennsylvania |
| 60 | Michael J. Cassidy | 38 | Head | Lineman | Pennsylvania |
| 61 | Cecilia Cassidy | 33 | Wife-H | — | Pennsylvania |
| 62 | Michael Jr. Cassidy | 9 | Son | — | Pennsylvania |
| 63 | Joseph H. Cassidy | 8 | Son | — | Pennsylvania |
| 64 | Robert Cassidy | 5 | Son | — | Pennsylvania |
| 65 | Ellen D. Cassidy | 3 | Daughter | — | Pennsylvania |
| 66 | John A. Cassidy | 2 | Son | — | Pennsylvania |
| 67 | Francis H. Cassidy | 1 | Son | — | Pennsylvania |
| 68 | Patrick Cassidy | 66 | Father | Retired | Irish Free State |
| 69 | Ralph Reisinger | 51 | Head | Machinist | Germany |
| 70 | Clara A. Reisinger | 50 | Wife-H | — | Germany |
| 71 | John L. Brandt | 78 | Head | File Clerk | Pennsylvania |
| 72 | Stella G. Brandt | 34 | Wife-H | — | Pennsylvania |
| 73 | John L. Jr. Brandt | 9 | Son | — | Colorado |
| 74 | Catherine A. Brandt | 7 | Daughter | — | Colorado |
| 75 | Paul R. Brandt | 4 | Son | — | Pennsylvania |
| 76 | Robert R. Brandt | 1 | Son | — | Pennsylvania |
| 77 | Bertha Prochaska | 49 | Head | — | Switzerland |
| 78 | Helen R. Prochaska | 38 | Sister | Teacher | Switzerland |
| 79 | Edward T. Steel | 52 | Head | Carpenter | Pennsylvania |
| 80 | John Hess | 46 | Head | Machinist | Germany |
| 81 | Elena G. Hess | 46 | Wife-H | — | Switzerland |
| 82 | John Hess | 23 | Son | Machinist | Pennsylvania |
| 83 | Paul C. Carroll | 24 | Head | — | Pennsylvania |
| 84 | Carroll | 17 | Wife-H | — | Pennsylvania |
| 85 | James R. Carroll | 1 | Son | — | Pennsylvania |
| 86 | Carroll | 0 | Daughter | — | Pennsylvania |
| 87 | James Carroll | 46 | Head | — | Pennsylvania |
| 88 | Carroll | 45 | Wife-H | — | Pennsylvania |
| 89 | James M. Jr. Carroll THIS PERSON | 25 | Son | — | Pennsylvania |
| 90 | Carroll | 25 | Wife-H | — | Pennsylvania |
| 91 | Carroll | 22 | Head | Laborer | Pennsylvania |
| 92 | Carroll | 21 | Wife-H | — | Ohio |
| 93 | John H. Davis | 32 | Head | — | Pennsylvania |
| 94 | Edith M. Davis | 29 | Wife-H | — | Pennsylvania |
| 95 | Thomas H. Devore | 31 | Head | Plumber | Pennsylvania |
| 96 | Edna M. Devore | 28 | Wife-H | — | Pennsylvania |
| 97 | James H. Devore | 3 | Son | — | Pennsylvania |
| 98 | Ellen M. Devore | 1 | Daughter | — | Pennsylvania |
| 99 | Patricia J. Devore | 0 | Daughter | — | Pennsylvania |
| 100 | Luydella Laffin | 26 | Roomer | Stenographer | Pennsylvania |
Pedigree Summary
James
Gen 1 · 5 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)