JL
James Lucas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Carroll-County, Indiana
Our Model Tree links this James Lucas across the 1920, 1930 and 1940 US Censuses in Carroll-County, Indiana (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a son (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Indiana |
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Flora Town |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Occupation | Truck driver |
| Industry | Saw mill |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 250 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Truck Driver |
| Township / Ward | Flora Town |
| Est. Birth Year | ~1915 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Helen Lucas | Daughter | — | 17 | ~1923 |
| Charles Lucas | Head | — | 61 | ~1879 |
| Theodore Lucas | Son | — | 22 | ~1918 |
| Harry Lucas | Son | — | 28 | ~1912 |
| James Lucas | Son | — | 25 | ~1915 |
| Dean Lucas | Son | — | 12 | ~1928 |
| Pearl Lucas | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Carroll, Indiana
Son, age 5
Carroll, Indiana · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Carroll, Indiana
Son, age 15
Carroll, Indiana · implied b. ~1915 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Carroll-County, Indiana
Son, age 25
Carroll-County, Indiana · implied b. ~1915 — 7 household members
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Flora Town |
| 1935 Residence (County) | Carroll |
| Occupation | Truck driver |
| Industry | Saw mill |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 250 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 James Lucas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Lucas (~0.92 confidence) and father Charles Lucas (~0.92 confidence) and father Charley Lucas (~0.92 confidence) and mother Pearl Lucas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Lucas
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Charles Lucas
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Charley Lucas
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Pearl Lucas
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Lucas
Son · 1940 · age 25 · b. ~1915 · Indiana
★ You are viewing this record
Sibling
Dean Lucas
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Lucas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Lucas
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Lucas
Sibling · 1940 · age 28
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 — Carroll-County, Indiana
Open full size
1940 US Federal Census — Carroll-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01029-00332)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Weaver | 58 | Head | Bookkeeper | Pennsylvania |
| 2 | Anna Weaver | 44 | Daughter | Saleswoman | Illinois |
| 3 | Ruth Wilson | 34 | Daughter | Saleswoman | Indiana |
| 4 | Gaylord Isaac | 43 | Head | Laborer | Indiana |
| 5 | Jabyline Isaac | 37 | Wife | — | Indiana |
| 6 | Betty Jane Isaac | 5 | Daughter | — | Indiana |
| 7 | Marvin Ward | 28 | Head | Truck Driver | Indiana |
| 8 | Alta Ward | 24 | Wife | — | Indiana |
| 9 | Larry Ward | 1 | Son | — | Indiana |
| 10 | Walker Hill | 63 | Head | Jr. Leader | Indiana |
| 11 | Amanda Hill | 62 | Wife | — | Indiana |
| 12 | James P. Johnston | 70 | Head | — | Illinois |
| 13 | Lena M. Johnston | 64 | Wife | — | Indiana |
| 14 | Gideon Wilson | 65 | Head | — | Kansas |
| 15 | Alpha Wilson | 64 | Wife | — | Indiana |
| 16 | Robert Wilson | 31 | Son | Laborer | Indiana |
| 17 | Allen Ferree | 53 | Head | Ice Cream Maker | Illinois |
| 18 | Jessie Ferree | 48 | Wife | — | Indiana |
| 19 | Ella Flora | 64 | Wife | — | Indiana |
| 20 | Eliza Umble | 75 | Wife | — | Indiana |
| 21 | Pearl Gilbert | 52 | Daughter | Music Teacher | Indiana |
| 22 | Amos Clingenpeel | 61 | Head | Proprietor | Indiana |
| 23 | Maud Clingenpeel | 57 | Wife | — | Indiana |
| 24 | Charles Lucas | 61 | Head | Sawyer | Indiana |
| 25 | Pearl Lucas | 49 | Wife | — | Indiana |
| 26 | Harry Lucas | 28 | Son | Laborer | Indiana |
| 27 | James Lucas THIS PERSON | 25 | Son | Truck Driver | Indiana |
| 28 | Theodore Lucas | 22 | Son | Truck Driver | Indiana |
| 29 | Helen Lucas | 17 | Daughter | — | Indiana |
| 30 | Dean Lucas | 12 | Son | — | Indiana |
| 31 | Frank P. Roskuski | 74 | Head | — | Germany |
| 32 | Rosella Roskuski | 34 | Daughter | — | Indiana |
| 33 | Lillie Reppert | 61 | Head | — | Indiana |
| 34 | Frank Perlin | 41 | Head | — | Indiana |
| 35 | Mattie Perlin | 39 | Wife | — | Indiana |
| 36 | Florence Perlin | 18 | Daughter | Clerk | Indiana |
| 37 | Martha Perlin | 14 | Daughter | — | Indiana |
| 38 | Rozella Perlin | 9 | Daughter | — | Indiana |
| 39 | Charley Gibbs | 58 | Head | Off Bearer | Indiana |
| 40 | Lillie Gibbs | 57 | Wife | — | Indiana |
Pedigree Summary
James + 4 siblings
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 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)