MD
Mary Duke — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Jefferson, Alabama
Our Model Tree links this Mary Duke across the 1930 and 1940 US Censuses in Jefferson, Alabama (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 6-person household.
Age 18
b. ~1912
Female
Daughter
Born: Alabama
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Jefferson, Alabama |
| Surname | Duke |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Georgia |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | City Of Birmingham |
| Est. Birth Year | ~1912 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Duke | Daughter | — | 18 | ~1912 |
| Katie Duke | Spouse | — | 43 | ~1887 |
| James Duke | Head | — | 53 | ~1877 |
| Elizabeth Duke | Daughter | — | 10 | ~1920 |
| William Duke | Son | — | 21 | ~1909 |
| Wayne Manley | Other | — | 19 | ~1911 |
Census Appearances
1930
Jefferson, Alabama
Daughter, age 18
Jefferson, Alabama · implied b. ~1912 — 6 household members
| Surname | Duke |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Spouse, age 29
Jefferson-County, Alabama · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duke |
| Given Name | Mable |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Jefferson |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Duke
Daughter · 1930 · age 18 · b. ~1912 · Alabama
★ You are viewing this record
Sibling
William Duke
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Duke
Sibling · 1930 · age 10
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
1930 US Federal Census — Jefferson, Alabama
Open full size
1930 US Federal Census — Jefferson, Alabama
Page Contents
50 people indexed on this census page (ia:1930:15thcensus26uscers:0369)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Mclaughlan | 82 | Head | — | Northern Ireland |
| 2 | Mary Mclaughlan | 74 | Wife | — | Wales |
| 3 | Mary Mclaughlan | 56 | Daughter | — | Pennsylvania |
| 4 | George W. Blaich | 60 | Head | — | Pennsylvania |
| 5 | Elizabeth A. Blaich | 59 | Wife | — | Pennsylvania |
| 6 | Sadie M. Blaich | 39 | Daughter | — | Pennsylvania |
| 7 | Ethel M. Blaich | 19 | Daughter | — | Alabama |
| 8 | Charles A. Blaich | 16 | Son | Cashier | Alabama |
| 9 | Forney C. Howard | 44 | Head | Printer | Alabama |
| 10 | Sammilla Howard | 39 | Wife | — | Tennessee |
| 11 | Clarence Howard | 21 | Son | Machinist | Alabama |
| 12 | Hubert Howard | 19 | Son | — | Alabama |
| 13 | Forney Howard | 9 | Son | — | Alabama |
| 14 | James C. Wade | 38 | Head | Helper | Alabama |
| 15 | Molly D. Wade | 36 | Wife | — | Alabama |
| 16 | Vesta Wade | 14 | Daughter | — | Alabama |
| 17 | James C. Jr. Wade | 9 | Son | — | Alabama |
| 18 | Charles P. Wade | 7 | Son | — | Alabama |
| 19 | Daniel E. Wade | 5 | Son | — | Alabama |
| 20 | Elizabeth J. Wade | 1 | Daughter | — | Alabama |
| 21 | Lucile E. Steelmon | 69 | Head | — | Alabama |
| 22 | Phoebe A. Steelmon | 24 | Daughter | — | Mississippi |
| 23 | James C. Steelmon | 23 | Son | Saleslady | Alabama |
| 24 | James L. Duke | 53 | Head | Salesman | Alabama |
| 25 | Katie Duke | 43 | Wife | — | Georgia |
| 26 | William C. Duke | 21 | Son | Helper | Alabama |
| 27 | Mary C. Duke THIS PERSON | 18 | Daughter | — | Alabama |
| 28 | Elizabeth M. Duke | 10 | Daughter | — | Alabama |
| 29 | Wayne Manley | 19 | Lodger | — | Tennessee |
| 30 | William T. Raper | 51 | Head | Cashier | Georgia |
| 31 | Addie E. Raper | 48 | Wife | — | Mississippi |
| 32 | William T. Jr. Raper | 18 | Son | — | Mississippi |
| 33 | Charles L. Raper | 17 | Son | — | Mississippi |
| 34 | Louvenia Raper | 15 | Daughter | File Clerk | Mississippi |
| 35 | Sue B. Raper | 14 | Daughter | — | Mississippi |
| 36 | Jack W. Raper | 8 | Son | — | Mississippi |
| 37 | Florence Summers | 53 | Head | — | Alabama |
| 38 | Charles Summers | 24 | Son | — | Tennessee |
| 39 | Beatrice Summers | 19 | Daughter | Repairer | Alabama |
| 40 | Gertrude Summers | 16 | Daughter | Sales Lady | Alabama |
| 41 | Christine Summers | 12 | Daughter | — | Alabama |
| 42 | Thomas Nicholas | 57 | Head | — | Alabama |
| 43 | Charotte E. Nicholas | 44 | Wife | — | Alabama |
| 44 | Thomas J. Nicholas | 21 | Son | Inspector | Texas |
| 45 | Henry H. Brumbeck | 59 | Head | Bookkeeper | Tennessee |
| 46 | Sarah Brumbeck | 52 | Wife | — | Tennessee |
| 47 | Willard C. Brumbeck | 34 | Son | Machinist | Virginia |
| 48 | Fred H. Benne | 31 | Head | Machinist | Alabama |
| 49 | Eula Benne | 35 | Wife | Electrician | Alabama |
| 50 | Mira J. Benne | 5 | Daughter | — | Alabama |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)