JC
John Carroll — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this John Carroll across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Maurice & Lina — first a son (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Carroll |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Lithographer |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 388 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Lithographer |
| Township / Ward | Indianapolis |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Carroll | Daughter | — | 18 | ~1922 |
| Maurice Carroll | Head | — | 60 | ~1880 |
| Edward Carroll | Son | — | 29 | ~1911 |
| John Carroll | Son | — | 31 | ~1909 |
| Maurice Carroll | Son | — | 21 | ~1919 |
| Lena Carroll | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Marion, Indiana
Son, age 11
Marion, Indiana · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 21
Marion, Indiana · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carrol |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | printer |
| Industry | Print Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 31
Marion-County, Indiana · implied b. ~1909 — 6 household members
| Surname | Carroll |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Lithographer |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 388 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Maurice Carroll (~0.92 confidence) and mother Lina Carroll (~0.92 confidence) and mother Lena Carroll (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Maurice Carroll
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Lina Carroll
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Lena Carroll
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Carroll
Son · 1940 · age 31 · b. ~1909 · Indiana
★ You are viewing this record
Sibling
Mary Carroll
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Carroll
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maurice Carroll
Sibling · 1940 · age 21
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01129-00782)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose E. Cleveland | 66 | Mother | — | Indiana |
| 42 | Joseph F. Duffy | 37 | Head | Truck Driver | Indiana |
| 43 | Thelma Duffy | 35 | Wife | — | Indiana |
| 44 | Patricia Duffy | 14 | Daughter | — | Indiana |
| 45 | Eric Hall | 54 | Head | Cashier | Indiana |
| 46 | Nellie Hall | 50 | Wife | — | Illinois |
| 47 | Mildred Hall | 20 | Daughter | File Clerk | Indiana |
| 48 | Howard Pulliam | 51 | Head | Receiving Clerk | Illinois |
| 49 | Jessie Pulliam | 44 | Wife | Saleslady | Illinois |
| 50 | Abraham Haboush | 43 | Head | Machinist Helper | Lebanon |
| 51 | Matilda Haboush | 39 | Wife | — | Lebanon |
| 52 | Salvina Haboush | 23 | Daughter | Bookkeeper & Stenographer | Lebanon |
| 53 | Lona Haboush | 21 | Son | — | Lebanon |
| 54 | Helen Haboush | 16 | Daughter | — | Indiana |
| 55 | Joseph Haboush | 14 | Son | — | Indiana |
| 56 | Henry Hussle | 37 | Head | Foreman | Indiana |
| 57 | Hanna Hussle | 36 | Wife | — | Indiana |
| 58 | Joseph Hussle | 9 | Son | — | Indiana |
| 59 | John Hussle | 6 | Son | — | Indiana |
| 60 | Louis Hussle | 2 | Son | — | Indiana |
| 61 | Joseph J. Lee | 52 | Head | Machinist | Illinois |
| 62 | Rose Lee | 52 | Wife | — | Indiana |
| 63 | Rosemary Lee | 17 | Daughter | — | Indiana |
| 64 | William H. Wolaiffer | 62 | Head | Janitor | Indiana |
| 65 | Catherine M. Wolaiffer | 62 | Wife | — | Indiana |
| 66 | Maurice W. Carroll | 60 | Head | Clerk In Accounting | Ohio |
| 67 | Lena D. Carroll | 56 | Wife | — | Indiana |
| 68 | John B. Carroll THIS PERSON | 31 | Son | Lithographer | Indiana |
| 69 | Edward J. Carroll | 29 | Son | Laborer | Indiana |
| 70 | Maurice J. Jr. Carroll | 21 | Son | Bookkeeper | Indiana |
| 71 | Mary Anne Carroll | 18 | Daughter | New Worker | Indiana |
| 72 | Norman Butler | 31 | Head | Millwright | Indiana |
| 73 | Josephine Butler | 29 | Wife | — | Indiana |
| 74 | Barbara Butler | 8 | Daughter | — | Indiana |
| 75 | Phillip Butler | 6 | Son | — | Indiana |
| 76 | Diane Butler | 0 | Daughter | — | Indiana |
| 77 | Oren Wallace | 29 | Head | Laborer | Indiana |
| 78 | Marion Wallace | 23 | Wife | Sales Clerk | Indiana |
| 79 | Daniel Wallace | 4 | Son | — | Indiana |
| 80 | Alfred E. Schwartz | 32 | Head | Shipping Clerk | Indiana |
Related Census Records
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)