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Mary Lucas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Owen-County, Indiana
Our Model Tree links this Mary Lucas across the 1920, 1930 and 1940 US Censuses in Owen-County, Indiana (XGBoost, ~Confirmed), with identified parents Curtis & Ina — first a daughter (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Owen-County, Indiana |
| Surname | Lucas |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Jordan Village |
| 1935 Residence (County) | Owen |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Jordan Village |
| Est. Birth Year | ~1917 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lucas | Daughter | — | 23 | ~1917 |
| Curtis Lucas | Head | — | 59 | ~1881 |
| Ina Lucas | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Owen, Indiana
Daughter, age 3
Owen, Indiana · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Owen, Indiana
Daughter, age 13
Owen, Indiana · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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
Owen-County, Indiana
Daughter, age 23
Owen-County, Indiana · implied b. ~1917 — 3 household members
| Surname | Lucas |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Jordan Village |
| 1935 Residence (County) | Owen |
| Highest Grade | H-4 |
| 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 Mary Lucas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Curtis Lucas (~0.92 confidence) and mother Ina Lucas (~0.92 confidence) and mother Mae Lucas (~0.92 confidence) and mother May Lucas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Curtis Lucas
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Ina Lucas
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Mae Lucas
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
May Lucas
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lucas
Daughter · 1940 · age 23 · b. ~1917 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Owen-County, Indiana
Open full size
1940 US Federal Census — Owen-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01083-00686)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cecil D. Meek | 37 | Head | Salesman | Indiana |
| 2 | Alta Meek | 32 | Wife | — | Indiana |
| 3 | Gerald Meek | 12 | Son | — | Indiana |
| 4 | Thelma R. Meek | 11 | Daughter | — | Indiana |
| 5 | Harold L. Meek | 9 | Son | — | Indiana |
| 6 | Robert Langdon | 57 | Head | Owner And Manager | Indiana |
| 7 | Ola Langdon | 55 | Wife | — | Indiana |
| 8 | Howard E. Beamer | 70 | Head | Intermediate Grammar Teacher | Indiana |
| 9 | Mary E. Mccann | 73 | Head | — | Indiana |
| 10 | Lorene Mccann | 38 | Daughter | Assistant Buyer | Indiana |
| 11 | Beulah J. Mccann | 36 | Daughter | Primary Teacher | Indiana |
| 12 | Henry Walbring | 86 | Head | — | Indiana |
| 13 | Etta M. Walbring | 37 | Daughter | — | Indiana |
| 14 | Frederick W. Mohr | 37 | Head | Principal | Indiana |
| 15 | Rosemont Mohr | 34 | Wife | — | Indiana |
| 16 | Frederick G. Mohr | 6 | Son | — | Indiana |
| 17 | William S. Crick | 26 | Head | Salesman | Indiana |
| 18 | Ida B. Crick | 21 | Wife | — | Indiana |
| 19 | William S. Jr. Crick | 2 | Son | — | Indiana |
| 20 | Leona M. Stevens | 40 | Head | Operator | Indiana |
| 21 | Beulah J. Stevens | 14 | Daughter | Engineer | Indiana |
| 22 | Leona M. Stevens | 13 | Daughter | — | Indiana |
| 23 | Howard R. Stevens | 19 | Son | Engineer | Indiana |
| 24 | Oneda M. Stevens | 18 | Daughter | — | Indiana |
| 25 | Curtis D. Lucas | 59 | Head | Salesman | Indiana |
| 26 | Ina M. Lucas | 53 | Wife | — | Indiana |
| 27 | Mary M. Lucas THIS PERSON | 23 | Daughter | — | Indiana |
| 28 | Darrell Williams | 25 | Head | Salesman | Indiana |
| 29 | Geneva Williams | 21 | Wife | — | Indiana |
| 30 | Saul Halton | 66 | Head | Owner | Indiana |
| 31 | Louella Halton | 27 | Wife | — | Indiana |
| 32 | Ellis Halton | 31 | Son | Owner And Manager | Indiana |
| 33 | William H. Kerschner | 78 | Head | Gardener | Indiana |
| 34 | Dennis L. Anderson | 53 | Head | Mechanic | Indiana |
| 35 | Forest Anderson | 15 | Son | Salesman | Indiana |
| 36 | Rebecca Anderson | 84 | Head | — | Indiana |
| 37 | Arthur Anderson | 43 | Son | Laborer | Indiana |
| 38 | Paul Campbell | 47 | Head | Salesman | Indiana |
| 39 | Zola B. Campbell | 43 | Wife | — | Indiana |
| 40 | Paul M. Campbell | 19 | Son | Salesman | Indiana |
Pedigree Summary
Mary
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)