JD
John Dunn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this John Dunn across the 1920, 1930 and 1940 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a head (b.~1899), then head of a 3-person household.
Age 31
b. ~1899
Male
Head
Born: Missouri
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 21 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Occupation | Machinist |
| Industry | Shoe Machine Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 31 |
| Radio Set | R |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Machinist |
| Township / Ward | St Ann Hills |
| Est. Birth Year | ~1899 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Dunn | Daughter | — | 4 | ~1926 |
| John Dunn | Head | — | 31 | ~1899 |
| Margaret Dunn | Spouse | — | 28 | ~1902 |
Census Appearances
1920
St Louis, …
Head, age 20
St Louis, Missouri · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Meat Trimmer |
| Industry | Packing House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Head, age 31
St Louis, Missouri · implied b. ~1899 — 3 household members
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 21 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Machinist |
| Industry | Shoe Machine Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 31 |
| Radio Set | R |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Other, age 39
St.-Louis-County, Missouri · implied b. ~1901 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | nephew |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St Louis |
| 1935 Residence (County) | St Louis |
| Occupation | Laborer |
| Industry | Building |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 500 |
| Highest Grade | No 5 |
| 1935 Residence | Missouri |
| 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 John Dunn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Dunn
Head · 1930 · age 31 · b. ~1899 · 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:missouricensus00reel1237:0513)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Hammerschmidt | 40 | Head | Truckman | Missouri |
| 2 | Marie Hammerschmidt | 38 | Wife | — | Missouri |
| 3 | Nancy Hammerschmidt | 14 | Daughter | Moulder | Missouri |
| 4 | — | None | — | — | — |
| 5 | — | None | — | — | Here ends enumeration of Block No. 2174 |
| 6 | Elmer L Wallner | 30 | Head | Salesman | Arkansas |
| 7 | Lillian Wallner | 27 | Wife | — | Missouri |
| 8 | Elmer Jr Wallner | 5 | Son | — | Missouri |
| 9 | John Dunn THIS PERSON | 31 | Head | Machinist | Missouri |
| 10 | Margaret Dunn | 28 | Wife | — | Illinois |
| 11 | Margaret Dunn | 4 | Daughter | — | Missouri |
| 12 | John Illuminski | 32 | Head | Baker | Germany |
| 13 | Margaret Illuminski | 31 | Wife | — | Kentucky |
| 14 | John Illuminski | 8 | Son | — | Missouri |
| 15 | Anna Illuminski | 10 | Daughter | — | Missouri |
| 16 | Royal Jones | 27 | Head | Blacksmith | Tennessee |
| 17 | Doris Jones | 17 | Wife | Operator Tel | Tennessee |
| 18 | Grady Stanford | 31 | Head | Salesman | Tennessee |
| 19 | Beatrice Stanford | 27 | Wife | — | Tennessee |
| 20 | Grady Jr Stanford | 3 | Son | — | Tennessee |
| 21 | Arthur Peden | 28 | Head | Porter | Missouri |
| 22 | Alice Peden | 20 | Wife | Checker | Missouri |
| 23 | Josephine Peden | 1 | Daughter | — | Missouri |
| 24 | James Donahue | 58 | Head | Laborer | Missouri |
| 25 | Catherine Donahue | 55 | Wife | — | Ireland |
| 26 | John Hickey | 39 | Head | Fireman | Massachusetts |
| 27 | Margaret Hickey | 31 | Wife | — | Missouri |
| 28 | John Jr Hickey | 11 | Son | — | Missouri |
| 29 | Frank Hickey | 9 | Son | — | Missouri |
| 30 | Robert Hickey | 7 | Son | — | Missouri |
| 31 | James Hickey | 5 | Son | — | Missouri |
| 32 | John Byrnes | 40 | Head | Carpenter | Missouri |
| 33 | Mary Byrnes | 38 | Wife | — | Missouri |
| 34 | John Jr Byrnes | 13 | Son | — | Missouri |
| 35 | William Byrnes | 9 | Son | — | Kansas |
| 36 | Mary Byrnes | 7 | Daughter | — | Kansas |
| 37 | James Byrnes | 5 | Son | — | Kansas |
| 38 | Ray Byrnes | 2 | Son | — | Kentucky |
| 39 | Robert Byrnes | 1 | Son | — | Kentucky |
| 40 | Richard Byrnes | 0 | Son | — | Kentucky |
| 41 | Emery De Grant | 44 | Head | Keeper | Missouri |
| 42 | Emily De Grant | 40 | Wife | — | Missouri |
| 43 | James Donahue | 25 | Head | Electrician | Missouri |
| 44 | Mary Donahue | 22 | Wife | — | Missouri |
| 45 | James Jr Donahue | 1 | Son | — | Missouri |
| 46 | James Robinson | 35 | Head | Paper Hanger | Kentucky |
| 47 | Myrtle Robinson | 33 | Wife | — | Kentucky |
| 48 | James Jr Robinson | 13 | Son | Paper Hanger | Kentucky |
| 49 | Frank Robinson | 11 | Son | — | Kentucky |
| 50 | Robert Robinson | 9 | Son | — | Kentucky |
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)