MD
Mary Duke — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this Mary Duke across the 1930 and 1940 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 6-person household.
Age 33
b. ~1897
Female
Spouse
Born: Missouri
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Duke |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 18 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Carondelet Township |
| Est. Birth Year | ~1897 |
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 |
|---|---|---|---|---|
| Raymond Duke | Son | — | 7 | ~1923 |
| Charles Duke | Head | — | 37 | ~1893 |
| Mary Duke | Spouse | — | 33 | ~1897 |
| Lawrence Duke | Son | — | 3 | ~1927 |
| Mildred Duke | Daughter | — | 10 | ~1920 |
| Charles Duke | Son | — | 13 | ~1917 |
Census Appearances
1930
St Louis, …
Spouse, age 33
St Louis, Missouri · implied b. ~1897 — 6 household members
| Surname | Duke |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 18 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Spouse, age 44
St.-Louis-County, Missouri · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dice |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Clayton Township |
| 1935 Residence (County) | St. Louis |
| Occupation | Cook |
| Industry | Sandwich shop |
| Class of Worker | PW |
| Hours Worked | 98 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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
Spouse · 1930 · age 33 · b. ~1897 · Missouri
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — St Louis, Missouri
Open full size
1930 US Federal Census — St Louis, Missouri
Page Contents
50 people indexed on this census page (ia:1930:missouricensus00reel1223:0697)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Michael Mund | 74 | Head | Gardner | Germany |
| 52 | Marie Mund | 75 | Wife | — | Germany |
| 53 | Louis E. Guebert | 21 | Head | Gardner | Missouri |
| 54 | Pearl M. Guebert | 20 | Wife | — | Missouri |
| 55 | Louisa Guebert | 58 | Mother | — | Germany |
| 56 | Minnie Guebert | 24 | Sister | — | Missouri |
| 57 | James J. Byrne | 46 | Boarder | Laborer | Missouri |
| 58 | Raymond Byrne | 48 | Boarder | — | Missouri |
| 59 | John Seewald | 74 | Head | — | Illinois |
| 60 | Charles Beatty | 36 | Head | Truck Farmer | Kentucky |
| 61 | Emma F. Beatty | 23 | Wife | Motorman | Germany |
| 62 | Charles Jr. Beatty | 4 | Son | — | Missouri |
| 63 | Jesse J. Beatty | 3 | Son | — | Missouri |
| 64 | Henry J. Beatty | 2 | Son | — | Missouri |
| 65 | Melvin R. Beatty | 0 | Son | — | Missouri |
| 66 | Charles F. Duke | 37 | Head | Farmer | Missouri |
| 67 | Mary J. Duke THIS PERSON | 33 | Wife | — | Missouri |
| 68 | Charles F. Jr. Duke | 13 | Son | Laborer | Missouri |
| 69 | Mildred R. Duke | 10 | Daughter | — | Missouri |
| 70 | Raymond Duke | 7 | Son | — | Missouri |
| 71 | Lawrence Duke | 3 | Son | — | Missouri |
| 72 | August Rau | 36 | Head | Butcher | Germany |
| 73 | Margretha Rau | 40 | Wife | — | Germany |
| 74 | Margretha Rau | 11 | Daughter | — | Germany |
| 75 | Guinaline Rau | 8 | Daughter | — | Germany |
| 76 | Dolores Rau | 4 | Daughter | — | Missouri |
| 77 | Agnes Rau | 1 | Daughter | — | Missouri |
| 78 | Jackson L. Sutton | 32 | Head | Carpenter | Missouri |
| 79 | Anna Sutton | 33 | Wife | — | Missouri |
| 80 | Gertrude L. Sutton | 11 | Daughter | — | Missouri |
| 81 | Willie P. Sutton | 9 | Son | — | Missouri |
| 82 | Donald J. Sutton | 5 | Son | — | Missouri |
| 83 | Raymond L. Sutton | 4 | Son | — | Missouri |
| 84 | Richard L. Sutton | 1 | Son | — | Missouri |
| 85 | Edward H. Hadley | 38 | Head | Pump Operator | Missouri |
| 86 | Virgie H. Hadley | 27 | Wife | — | Missouri |
| 87 | Edward H. Jr. Hadley | 8 | Son | — | Missouri |
| 88 | Ethelta V. Hadley | 6 | Daughter | — | Missouri |
| 89 | Robert G. Hadley | 4 | Son | — | Missouri |
| 90 | Mary J. Hadley | 2 | Daughter | — | Missouri |
| 91 | Samuel W. Forder | 49 | Head | Agent | Missouri |
| 92 | Louisa W. Forder | 40 | Wife | — | Missouri |
| 93 | Frederick Bonacker | 65 | Head | Salesman | Missouri |
| 94 | Irene L. Bonacker | 33 | Daughter | Stenographer | Missouri |
| 95 | Albert A. Kruger | 35 | Head | Druggist | Missouri |
| 96 | Dorothy D. Kruger | 22 | Wife | — | Missouri |
| 97 | Peter Wilhelm | 53 | Head | Laborer | Austria |
| 98 | Katherine Wilhelm | 50 | Wife | — | Austria |
| 99 | John Wilhelm | 12 | Son | — | Missouri |
| 100 | Frederick P. Wilhelm | 0 | Son | — | Missouri |
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)