JC
John Carroll — 1940 US Census Record
Model Tree available1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this John Carroll across the 1920, 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Agnes — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Avoca |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Occupation | New Worker |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Avoca |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Carroll | Daughter | — | 26 | ~1914 |
| Helen Carroll | Daughter | — | 30 | ~1910 |
| Agnes Carroll | Head | — | 57 | ~1883 |
| John Carroll | Son | — | 31 | ~1909 |
| Joseph Carroll | Son | — | 21 | ~1919 |
Census Appearances
1920
Luzerne, Pennsylvania
Son, age 10
Luzerne, Pennsylvania · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Son, age 20
Luzerne, Pennsylvania · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Age at First Marriage | 17 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Son, age 31
Luzerne-County, Pennsylvania · implied b. ~1909 — 5 household members
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Avoca |
| 1935 Residence (County) | Luzerne |
| Occupation | New Worker |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 John Carroll across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Carroll (~0.92 confidence) and mother Agnes Carroll (~0.92 confidence) and mother Agnes Carroll (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Carroll
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Agnes Carroll
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Agnes Carroll
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Carroll
Son · 1940 · age 31 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Carroll
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Carroll
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Carroll
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03549-00196)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank J. Hobbes | 68 | Head | Pensioned | Pennsylvania |
| 42 | Mary Hobbes | 65 | Wife | — | Pennsylvania |
| 43 | Frankie Hobbes | 33 | Son | Laborer | Pennsylvania |
| 44 | Edward Hobbes | 26 | Son | Laborer | Pennsylvania |
| 45 | William Hobbes | 22 | Son | New Worker | Pennsylvania |
| 46 | Kenneth Hobbes | 20 | Son | — | Pennsylvania |
| 47 | Adelaide O'Brien | 42 | Daughter | Unpaid Family Worker | Pennsylvania |
| 48 | James O'Brien | 25 | Grandson | Truck Driver | Pennsylvania |
| 49 | Harold O'Brien | 21 | Grandson | — | Pennsylvania |
| 50 | Michael J. Brogan | 82 | Head | — | Pennsylvania |
| 51 | Bridget Brogan | 73 | Wife | — | Pennsylvania |
| 52 | Michael Jr. Brogan | 36 | Son | Motor-Man | Pennsylvania |
| 53 | Walter Brogan | 31 | Son | Truck Driver | Pennsylvania |
| 54 | Bridget Corcoran | 70 | Head | — | Ireland (Eire) |
| 55 | Anna Corcoran | 30 | Daughter | Bookkeeper | Pennsylvania |
| 56 | Frank Boylan | 38 | Son-in-law | Laborer | Pennsylvania |
| 57 | Rena Boylan | 38 | Daughter | — | Pennsylvania |
| 58 | Agnes Carroll | 57 | Head | — | Pennsylvania |
| 59 | John Carroll THIS PERSON | 31 | Son | New Worker | Pennsylvania |
| 60 | Helen Carroll | 30 | Daughter | Saleslady | Pennsylvania |
| 61 | Dorothy Carroll | 26 | Daughter | New Worker | Pennsylvania |
| 62 | Joseph Carroll | 21 | Son | Clerk | Pennsylvania |
| 63 | Harold Spencer | 32 | Head | Clerk | Pennsylvania |
| 64 | Agnes Spencer | 28 | Wife | — | Pennsylvania |
| 65 | Ann Spencer | 4 | Daughter | — | Pennsylvania |
| 66 | Charles F. Hannon | 32 | Head | Laborer | Pennsylvania |
| 67 | Mary Hannon | 26 | Wife | — | Pennsylvania |
| 68 | Thomas Hannon | 5 | Son | — | Pennsylvania |
| 69 | Elaine Hannon | 2 | Daughter | — | Pennsylvania |
| 70 | Alex Lis | 43 | Head | Miner | Poland |
| 71 | Bridget Lis | 40 | Wife | — | Poland |
| 72 | Alice Lis | 18 | Daughter | Clerk | Pennsylvania |
| 73 | Amelia Lis | 12 | Daughter | — | Pennsylvania |
| 74 | Anna Lis | 10 | Daughter | — | Pennsylvania |
| 75 | Albert Lis | 8 | Son | — | Pennsylvania |
| 76 | Alex Jr. Lis | 5 | Son | — | Pennsylvania |
| 77 | Alfred Lis | 3 | Son | — | Pennsylvania |
| 78 | Gertrude Golden | 21 | Head | — | Pennsylvania |
| 79 | Donald Golden | 0 | Son | — | Pennsylvania |
| 80 | George Murphy | 36 | Head | Deputy Collector | Pennsylvania |
Pedigree Summary
John + 3 siblings
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)