MD
Mary Duke — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dekalb-County, Georgia
Our Model Tree links this Mary Duke across the 1920, 1930 and 1940 US Censuses in Dekalb-County, Georgia (XGBoost, ~Confirmed), with identified parents Ben & Genevieve — first a daughter (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Female
Daughter
Born: Georgia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dekalb-County, Georgia |
| Surname | Duke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | Decatur City |
| 1935 Residence (County) | DeKalb |
| Additional Details | |
| Occupation | Teacher |
| Industry | City School |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1110 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Occupation | Teacher |
| Township / Ward | Decatur City |
| Est. Birth Year | ~1910 |
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 |
|---|---|---|---|---|
| Genie Duke | Head | — | 55 | ~1885 |
| Genie Duke | Daughter | — | 24 | ~1916 |
| Mary Duke | Daughter | — | 30 | ~1910 |
Census Appearances
1920
Dekalb, Georgia
Daughter, age 10
Dekalb, Georgia · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1930
Dekalb, Georgia
Daughter, age 20
Dekalb, Georgia · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Dekalb-County, Georgia
Daughter, age 30
Dekalb-County, Georgia · implied b. ~1910 — 3 household members
| Surname | Duke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | Decatur City |
| 1935 Residence (County) | DeKalb |
| Occupation | Teacher |
| Industry | City School |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1110 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Duke across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ben Duke (~0.92 confidence) and mother Genevieve Duke (~0.92 confidence) and mother Genie Duke (~0.92 confidence) and mother Jan Duke (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ben Duke
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Genevieve Duke
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Genie Duke
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Jan Duke
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Duke
Daughter · 1940 · age 30 · b. ~1910 · Georgia
★ You are viewing this record
Sibling
Genie Duke
Sibling · 1940 · age 24
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 — Dekalb-County, Georgia
Open full size
1940 US Federal Census — Dekalb-County, Georgia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00664-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John B Matthews | 65 | Head | Linotype Operator | Georgia |
| 2 | Lucile B Matthews | 56 | Wife | — | Georgia |
| 3 | Martha E Matthews | 22 | Daughter | Stenographer | Georgia |
| 4 | John G Sloan | 33 | Son-in-law | Insurance Salesman | Georgia |
| 5 | Emma D Sloan | 30 | Daughter | — | Georgia |
| 6 | John G Jr Sloan | 5 | Grandson | — | Georgia |
| 7 | John B Nolan | 31 | Head | Assembler | Georgia |
| 8 | Sudie Nolan | 32 | Wife | Nurse | South Carolina |
| 9 | Barbara Jean Nolan | 2 | Daughter | — | Georgia |
| 10 | Genie C Duke | 55 | Head | — | Georgia |
| 11 | Mary Duke THIS PERSON | 30 | Daughter | Teacher | Georgia |
| 12 | Genie Duke | 24 | Daughter | Stenographer | South Carolina |
| 13 | Joel T Lauter | 53 | Head | Credit Manager | Georgia |
| 14 | Frances W Lauter | 52 | Wife | — | Michigan |
| 15 | Joel B Lauter | 22 | Son | — | Alabama |
| 16 | John S Lauter | 18 | Son | File Clerk | Georgia |
| 17 | Francis C Lauter | 15 | Son | — | Georgia |
| 18 | Elizabeth Sleeley|Sleeley | 68 | Mother-in-law | — | Canada |
| 19 | — | None | — | — | — |
| 20 | Fred D Jr Slaight | 26 | Head | Repairman | South Carolina |
| 21 | Adelaide Slaight | 31 | Wife | Teacher | South Carolina |
| 22 | Ivan J Franklin | 56 | Head | Electric Mechanic | Georgia |
| 23 | Ruby W Franklin | 45 | Wife | — | Georgia |
| 24 | Doris Franklin | 26 | Daughter | — | Georgia |
| 25 | Charles W Franklin | 24 | Son | Pressman | Georgia |
| 26 | Nell Franklin | 22 | Daughter | Stenographer | Georgia |
| 27 | Thomas B Franklin | 18 | Son | — | Georgia |
| 28 | Joseph R Franklin | 15 | Son | — | Georgia |
| 29 | Elliot C Thacker | 27 | Head | Clerk | Tennessee |
| 30 | Anna B Thacker | 27 | Wife | — | Tennessee |
| 31 | Marion J Thacker | 4 | Daughter | — | Tennessee |
| 32 | Annie G Mcdond | 42 | Head | — | Georgia |
| 33 | Susie M Mcdond | 76 | Mother | — | Georgia |
| 34 | Cloyee W Hardy | 34 | Head | Manager | Ohio |
| 35 | Evelyn P Hardy | 29 | Wife | — | Georgia |
| 36 | Walter L Haynie | 27 | Head | Supervisor | Georgia |
| 37 | Margaret Haynie | 24 | Wife | — | Georgia |
| 38 | — | None | — | — | — |
| 39 | John Chandler | 27 | Head | Auditor | Georgia |
| 40 | Margaret Chandler | 26 | Wife | Stenographer | Georgia |
Pedigree Summary
Mary + 1 sibling
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)