MH
Mary Hess — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Hess across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 30-person household.
Age 16
b. ~1914
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Hess |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| 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 |
| Est. Birth Year | ~1914 |
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.
30 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Hess | Daughter | — | 2 | ~1928 |
| Mary Hess | Daughter | — | 16 | ~1914 |
| Dorothy Hess | Daughter | — | 10 | ~1920 |
| Margaret Hess | Daughter | — | 8 | ~1922 |
| John Hess | Head | — | 42 | ~1888 |
| Elizabeth Hess | Other | — | 34 | ~1896 |
| Francis Hess | Other | — | 20 | ~1910 |
| Agnes Hess | Other | — | 28 | ~1902 |
| Bernard Hess | Other | — | 18 | ~1912 |
| Rose Hess | Other | — | 26 | ~1904 |
| Catherine Hess | Other | — | 36 | ~1894 |
| Leo Hess | Other | — | 16 | ~1914 |
| William Hess | Other | — | 40 | ~1890 |
| Paul Hess | Other | — | 14 | ~1916 |
| George Hess | Other | — | 8 | ~1922 |
| Gertrude Hess | Other | — | 22 | ~1908 |
| Margaret Hess | Other | — | 38 | ~1892 |
| Theresa Hess | Other | — | 30 | ~1900 |
| Charles Hess | Other | — | 10 | ~1920 |
| Anna Hess | Other | — | 32 | ~1898 |
| Helen Hess | Other | — | 24 | ~1906 |
| Edward Hess | Other | — | 12 | ~1918 |
| Thomas Hess | Son | — | 1 | ~1929 |
| William Hess | Son | — | 14 | ~1916 |
| Joseph Hess | Son | — | ~1930 | |
| Robert Hess | Son | — | 12 | ~1918 |
| Richard Hess | Son | — | 4 | ~1926 |
| John Hess | Son | — | 18 | ~1912 |
| James Hess | Son | — | 6 | ~1924 |
| Mary Hess | Spouse | — | 42 | ~1888 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 16
Baltimore, Maryland · implied b. ~1914 — 30 household members
| Surname | Hess |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| 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
Daughter, age 27
Baltimore-City-County, Maryland · implied b. ~1913 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hess |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| 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 Mary Hess across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hess
Daughter · 1930 · age 16 · b. ~1914 · Maryland
★ You are viewing this record
Sibling
Joseph Hess
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Hess
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Hess
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Hess
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hess
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hess
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hess
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Hess
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Hess
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Hess
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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus880unit:0965)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Hess | 42 | Head | Conductor | Maryland |
| 2 | Mary Hess | 42 | Wife | — | Maryland |
| 3 | John Jr. Hess | 18 | Son | — | Maryland |
| 4 | Mary Hess THIS PERSON | 16 | Daughter | — | Maryland |
| 5 | William Hess | 14 | Son | — | Maryland |
| 6 | Robert Hess | 12 | Son | — | Maryland |
| 7 | Dorothy Hess | 10 | Daughter | — | Maryland |
| 8 | Margaret Hess | 8 | Daughter | — | Maryland |
| 9 | James Hess | 6 | Son | — | Maryland |
| 10 | Richard Hess | 4 | Son | — | Maryland |
| 11 | Betty Hess | 2 | Daughter | — | Maryland |
| 12 | Thomas Hess | 1 | Son | — | Maryland |
| 13 | Joseph Hess | 0 | Son | — | Maryland |
| 14 | William Hess | 40 | Brother | Laborer | Maryland |
| 15 | Margaret Hess | 38 | Sister | — | Maryland |
| 16 | Catherine Hess | 36 | Sister | Clerk | Maryland |
| 17 | Elizabeth Hess | 34 | Sister | Assistant Librarian | Maryland |
| 18 | Anna Hess | 32 | Sister | — | Maryland |
| 19 | Theresa Hess | 30 | Sister | — | Maryland |
| 20 | Agnes Hess | 28 | Sister | — | Maryland |
| 21 | Rose Hess | 26 | Sister | — | Maryland |
| 22 | Helen Hess | 24 | Sister | — | Maryland |
| 23 | Gertrude Hess | 22 | Sister | — | Maryland |
| 24 | Francis Hess | 20 | Brother | Laborer | Maryland |
| 25 | Bernard Hess | 18 | Brother | — | Maryland |
| 26 | Leo Hess | 16 | Brother | Attendant | Maryland |
| 27 | Paul Hess | 14 | Brother | — | Maryland |
| 28 | Edward Hess | 12 | Brother | — | Maryland |
| 29 | Charles Hess | 10 | Brother | — | Maryland |
| 30 | George Hess | 8 | Brother | — | Maryland |
| 31 | John Larkin | 45 | Head | Civil Engineer | Ohio |
| 32 | Mary Larkin | 43 | Wife | — | Ohio |
| 33 | John Jr. Larkin | 17 | Son | — | Maryland |
| 34 | Robert Larkin | 15 | Son | — | Maryland |
| 35 | William Larkin | 13 | Son | — | Maryland |
| 36 | James Larkin | 11 | Son | — | Maryland |
| 37 | Thomas Larkin | 9 | Son | — | Maryland |
| 38 | Richard Larkin | 7 | Son | — | Maryland |
| 39 | Edward Larkin | 5 | Son | — | Maryland |
| 40 | Charles Larkin | 3 | Son | — | Maryland |
| 41 | George Larkin | 1 | Son | — | Maryland |
| 42 | Joseph Larkin | 0 | Son | — | Maryland |
| 43 | Catherine Larkin | 19 | Daughter | — | Maryland |
| 44 | Mary Larkin | 17 | Daughter | — | Maryland |
| 45 | Anna Larkin | 15 | Daughter | — | Maryland |
| 46 | Theresa Larkin | 13 | Daughter | — | Maryland |
| 47 | Agnes Larkin | 11 | Daughter | — | Maryland |
| 48 | Rose Larkin | 9 | Daughter | — | Maryland |
| 49 | Helen Larkin | 7 | Daughter | — | Maryland |
| 50 | Gertrude Larkin | 5 | Daughter | — | Maryland |
Related Census Records
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)