JD
John Dunn — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Dunn across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1912), then head of a 22-person household.
Age 18
b. ~1912
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| 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.
22 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Theresa Dunn | Daughter | — | ~1930 | |
| Mary Dunn | Daughter | — | 11 | ~1919 |
| Anna Dunn | Daughter | — | 13 | ~1917 |
| Catherine Dunn | Daughter | — | 6 | ~1924 |
| Dorothy Dunn | Daughter | — | 6 | ~1924 |
| Alice Dunn | Daughter | — | 8 | ~1922 |
| Bernadine Dunn | Daughter | — | 1 | ~1929 |
| Rita Dunn | Daughter | — | 2 | ~1928 |
| Rose Dunn | Daughter | — | 10 | ~1920 |
| Gertrude Dunn | Daughter | — | 4 | ~1926 |
| Agnes Dunn | Daughter | — | 1 | ~1929 |
| Helen Dunn | Daughter | — | 2 | ~1928 |
| Elizabeth Dunn | Daughter | — | 13 | ~1917 |
| Margaret Dunn | Daughter | — | 4 | ~1926 |
| John Dunn | Head | — | 44 | ~1886 |
| William Dunn | Son | — | 16 | ~1914 |
| Francis Dunn | Son | — | 8 | ~1922 |
| Joseph Dunn | Son | — | 12 | ~1918 |
| John Dunn | Son | — | 18 | ~1912 |
| Thomas Dunn | Son | — | 10 | ~1920 |
| James Dunn | Son | — | 14 | ~1916 |
| Mary Dunn | Spouse | — | 42 | ~1888 |
Census Appearances
1920
Baltimore, Maryland
Son, age 8
Baltimore, Maryland · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Year of Naturalization | yes |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 18
Baltimore, Maryland · implied b. ~1912 — 22 household members
| Surname | Dunn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 28
Baltimore-City-County, Maryland · implied b. ~1912 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunna |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Salesman |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 18 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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. Identified parents: father John Dunn (~0.92 confidence) and father John Dunn (~0.92 confidence) and mother Susan Dunn (~0.92 confidence) and mother Mary Dunn (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Dunn
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Dunn
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Susan Dunn
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Dunn
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Dunn
Son · 1930 · age 18 · b. ~1912 · Maryland
★ You are viewing this record
Sibling
Catherine Dunn
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Dunn
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Dunn
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Dunn
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Dunn
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Dunn
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Dunn
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Dunn
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Dunn
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Dunn
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Dunn
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Dunn
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Dunn
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernadine Dunn
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Dunn
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Dunn
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Dunn
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Dunn
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Dunn
Sibling · 1930 · age 13
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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus866unit:0359)
| Line | Name | Age | Relation | Birthplace |
|---|---|---|---|---|
| 51 | Anthony Stefaniak | 40 | Head | Maryland |
| 52 | Mary Stefaniak | 38 | Wife | Maryland |
| 53 | Anthony Stefaniak | 18 | Son | Maryland |
| 54 | John Stefaniak | 16 | Son | Maryland |
| 55 | Joseph Stefaniak | 14 | Son | Maryland |
| 56 | Edward Stefaniak | 12 | Son | Maryland |
| 57 | John Dunn | 44 | Head | Maryland |
| 58 | Mary Dunn | 42 | Wife | Maryland |
| 59 | John Dunn THIS PERSON | 18 | Son | Maryland |
| 60 | William Dunn | 16 | Son | Maryland |
| 61 | James Dunn | 14 | Son | Maryland |
| 62 | Joseph Dunn | 12 | Son | Maryland |
| 63 | Thomas Dunn | 10 | Son | Maryland |
| 64 | Francis Dunn | 8 | Son | Maryland |
| 65 | Catherine Dunn | 6 | Daughter | Maryland |
| 66 | Margaret Dunn | 4 | Daughter | Maryland |
| 67 | Helen Dunn | 2 | Daughter | Maryland |
| 68 | Agnes Dunn | 1 | Daughter | Maryland |
| 69 | Theresa Dunn | 0 | Daughter | Maryland |
| 70 | Elizabeth Dunn | 13 | Daughter | Maryland |
| 71 | Anna Dunn | 13 | Daughter | Maryland |
| 72 | Mary Dunn | 11 | Daughter | Maryland |
| 73 | Rose Dunn | 10 | Daughter | Maryland |
| 74 | Alice Dunn | 8 | Daughter | Maryland |
| 75 | Dorothy Dunn | 6 | Daughter | Maryland |
| 76 | Gertrude Dunn | 4 | Daughter | Maryland |
| 77 | Rita Dunn | 2 | Daughter | Maryland |
| 78 | Bernadine Dunn | 1 | Daughter | Maryland |
| 79 | John Lukas | 40 | Head | Poland |
| 80 | Mary Lukas | 38 | Wife | Maryland |
| 81 | John Lukas | 16 | Son | Maryland |
| 82 | Joseph Lukas | 14 | Son | Maryland |
| 83 | Edward Lukas | 12 | Son | Maryland |
| 84 | Stanley Lukas | 10 | Son | Maryland |
| 85 | Frank Lukas | 8 | Son | Maryland |
| 86 | Helen Lukas | 6 | Daughter | Maryland |
| 87 | Anna Lukas | 4 | Daughter | Maryland |
| 88 | Mary Lukas | 2 | Daughter | Maryland |
| 89 | Theresa Lukas | 1 | Daughter | Maryland |
| 90 | Josephine Lukas | 15 | Daughter | Maryland |
| 91 | Catherine Lukas | 13 | Daughter | Maryland |
| 92 | Rose Lukas | 11 | Daughter | Maryland |
| 93 | Alice Lukas | 9 | Daughter | Maryland |
| 94 | Dorothy Lukas | 7 | Daughter | Maryland |
| 95 | Gertrude Lukas | 5 | Daughter | Maryland |
| 96 | Rita Lukas | 3 | Daughter | Maryland |
| 97 | Bernadine Lukas | 1 | Daughter | Maryland |
| 98 | John Lukas | 15 | Son | Maryland |
| 99 | Joseph Lukas | 13 | Son | Maryland |
| 100 | Edward Lukas | 11 | Son | Maryland |
Related Census Records
Pedigree Summary
John + 19 siblings
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 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)