MH
Mary Heller — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Heller across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents Bradley & John — first a daughter (b.~1906), then head of a 8-person household.
Age 24
b. ~1906
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Heller |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Nurse |
| Est. Birth Year | ~1906 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Heller | Son | — | 15 | ~1915 |
| Mary Heller | Other | — | 25 | ~1905 |
| Anna Heller | Spouse | — | 55 | ~1875 |
| Donald Heller | Son | — | 20 | ~1910 |
| Mary Heller | Daughter | — | 24 | ~1906 |
| John Heller | Son | — | 26 | ~1904 |
| John Heller | Head | — | 56 | ~1874 |
| Francis Heller | Son | — | 30 | ~1900 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 14
Baltimore, Maryland · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haller |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 24
Baltimore, Maryland · implied b. ~1906 — 8 household members
| Surname | Heller |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 34
Baltimore-City-County, Maryland · implied b. ~1906 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hiller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Industry | 0 |
| Highest Grade | No 8 |
| 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 Heller across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bradley Haller (~0.92 confidence) and father John Heller (~0.92 confidence) and mother Anna Heller (~0.92 confidence) and mother Margo Haller (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bradley Haller
b. ~1880
Source father
● Household
· direct · ~0.92
Father
John Heller
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Anna Heller
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Margo Haller
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Heller
Daughter · 1930 · age 24 · b. ~1906 · Maryland
★ You are viewing this record
Sibling
Donald Heller
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Heller
Sibling · 1930 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Heller
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Heller
Sibling · 1930 · age 15
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:1930:15thcensus853unit:0074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Leimkuhler | 53 | Head | Machinist | Germany |
| 2 | Agnes Leimkuhler | 53 | Wife | — | Maryland |
| 3 | Robert G Leimkuhler | 22 | Son | Clerk | Maryland |
| 4 | John Leimkuhler | 20 | Son | Upholsterer | Maryland |
| 5 | Alma E Leimkuhler | 15 | Daughter | — | Maryland |
| 6 | Agnes F Gunter | 66 | Head | — | Maryland |
| 7 | Helen Alma E Gunter | 46 | Daughter | Saleslady | Maryland |
| 8 | Harry E Gunter | 40 | Son | — | Maryland |
| 9 | Nellie Ruth Gunter | 40 | Daughter | Salesman | Maryland |
| 10 | Harry Hooverster | 58 | Head | Letter Carrier | Maryland |
| 11 | Ella Hooverster | 57 | Wife | — | Maryland |
| 12 | Catherine Hooverster | 26 | Daughter | Teacher | Maryland |
| 13 | Agnes Kling | 87 | Mother-in-law | — | Maryland |
| 14 | Charles Rink | 45 | Head | Upholsterer | Germany |
| 15 | Mary E Rink | 45 | Wife | — | Maryland |
| 16 | Charles Jr Rink | 20 | Son | — | Maryland |
| 17 | Jacob Rink | 15 | Son | — | Maryland |
| 18 | Margaret Rink | 8 | Daughter | — | Maryland |
| 19 | Mary M Rink | 5 | Daughter | — | Maryland |
| 20 | John J Heller | 56 | Head | Druggist | Maryland |
| 21 | Anna V Heller | 55 | Wife | — | Maryland |
| 22 | Francis V Heller | 30 | Son | Geologist | Maryland |
| 23 | John J Jr Heller | 26 | Son | Clerk | Maryland |
| 24 | Mary E Heller THIS PERSON | 24 | Daughter | Nurse | Maryland |
| 25 | Mary E Heller | 25 | Cousin | Stenographer | Maryland |
| 26 | Donald J Heller | 20 | Son | At School | Maryland |
| 27 | James F Heller | 15 | Son | At School | Maryland |
| 28 | Nellie H Curran | 62 | Head | — | Virginia |
| 29 | Nellie Curran | 38 | Daughter | Clerk | Maryland |
| 30 | Max H Kuhne | 69 | Head | — | Germany |
| 31 | Carrie W Kuhne | 60 | Wife | — | Germany |
| 32 | Howard Kuhne | 23 | Nephew | College | Delaware |
| 33 | Jack Kuhne | 21 | Nephew | College | Delaware |
| 34 | John H Gonder | 39 | Head | Salesman | Maryland |
| 35 | Emily M Gonder | 37 | Wife | — | Maryland |
| 36 | Eugene James Gonder | 15 | Nephew | — | Maryland |
| 37 | Robert E Mcray | 48 | Head | Cutter | Maryland |
| 38 | Elizabeth Mcray | 48 | Wife | — | Maryland |
| 39 | Eva J Mcray | 2 | Daughter | — | Maryland |
| 40 | Raymond Hill | 29 | Boarder | Operator | Virginia |
| 41 | Euphemia O'Toole | 24 | Boarder | Clerk | Maryland |
| 42 | Marie Hodge | 22 | Roomer | Seamstress | Virginia |
| 43 | Virginia Hodge | 21 | Roomer | Seamstress | Virginia |
| 44 | Jessie S Gessell | 64 | Head | — | Maryland |
| 45 | Helen G Gessell | 43 | Daughter | — | Maryland |
| 46 | Clifford L Gessell | 22 | Son | Merchant | Maryland |
| 47 | Arthur Hurd | 22 | Roomer | At School | New York |
| 48 | Murdock Cohn | 23 | Roomer | At School | Alabama |
| 49 | William A Jackson | 35 | Head | Agent | Pennsylvania |
| 50 | Barbara E Jackson | 30 | Wife | — | Maryland |
Pedigree Summary
Mary + 4 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)