MH
Mary Heller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this Mary Heller across the 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 11-person household.
Age 40
b. ~1900
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Heller |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Hours Worked | 5 |
| Highest Grade | H 2 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Middletown Election District 3 |
| Est. Birth Year | ~1900 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Heller | Spouse | — | 40 | ~1900 |
| Joyce Heller | Daughter | — | 4 | ~1936 |
| Robert Heller | Son | — | 2 | ~1938 |
| Mary Heller | Daughter | — | 7 | ~1933 |
| Glenn Heller | Son | — | 5 | ~1935 |
| Helen Heller | Daughter | — | 16 | ~1924 |
| Claude Heller | Son | — | 10 | ~1930 |
| Charles Heller | Son | — | 14 | ~1926 |
| Betty Heller | Daughter | — | 11 | ~1929 |
| Pauline Heller | Daughter | — | 18 | ~1922 |
| Elmer Heller | Son | — | 20 | ~1920 |
Census Appearances
1930
Frederick, Maryland
Spouse, age 28
Frederick, Maryland · implied b. ~1902 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haller |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Spouse, age 40
Frederick-County, Maryland · implied b. ~1900 — 11 household members
| Surname | Heller |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Frederick |
| Hours Worked | 5 |
| Highest Grade | H 2 |
| 1935 Residence | Maryland |
| 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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Heller
Spouse · 1940 · age 40 · b. ~1900 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01548-00587)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary A Heller THIS PERSON | 40 | Wife | — | Maryland |
| 2 | Elmer N Heller | 20 | Son | Farmer | Maryland |
| 3 | Pauline Heller | 18 | Daughter | — | Maryland |
| 4 | Helen L Heller | 16 | Daughter | — | Maryland |
| 5 | Charles M Heller | 14 | Son | — | Maryland |
| 6 | Betty Jane Heller | 11 | Daughter | — | Maryland |
| 7 | Claude E Heller | 10 | Son | — | Maryland |
| 8 | Mary A Heller | 7 | Daughter | — | Maryland |
| 9 | Glenn David Heller | 5 | Son | — | Maryland |
| 10 | Joyce L Heller | 4 | Daughter | — | Maryland |
| 11 | Robert Heller | 2 | Son | — | Maryland |
| 12 | Guy P Yonkins | 40 | Head | Laborer | Maryland |
| 13 | Lillie V Yonkins | 37 | Wife | — | Maryland |
| 14 | Preston S Yonkins | 15 | Son | — | Maryland |
| 15 | Gerald J Yonkins | 12 | Son | — | Maryland |
| 16 | Patsy V Yonkins | 2 | Daughter | — | Maryland |
| 17 | Leslie H D Long | 51 | Head | Laborer | Maryland |
| 18 | Nellie B Long | 45 | Wife | — | Maryland |
| 19 | Paul E Long | 28 | Son | Day Labor | Maryland |
| 20 | Lester J Long | 11 | Son | — | Maryland |
| 21 | E June Long | 11 | Daughter | — | Maryland |
| 22 | James W Long | 8 | Son | — | Maryland |
| 23 | Marceline N Long | 6 | Daughter | — | Maryland |
| 24 | Maurice J Long | 6 | Son | — | Maryland |
| 25 | Huey P Long | 4 | Son | — | Maryland |
| 26 | Bessie M O Frink | 56 | Head | — | Maryland |
| 27 | Alvie L Frink | 24 | Son | Farmer | Maryland |
| 28 | Glenn W Frink | 22 | Son | Farmer | Maryland |
| 29 | Mildred V Frink | 16 | Daughter | — | Maryland |
| 30 | Robert E Frink | 12 | Son | — | Maryland |
| 31 | Clarence O Roogle | 46 | Head | Farmer | Maryland |
| 32 | Anna E Roogle | 47 | Wife | — | Maryland |
| 33 | Paul E Roogle | 20 | Son | Farmer | Maryland |
| 34 | Grayson O Roogle | 23 | Son | Farmer | Maryland |
| 35 | Evelyn E Roogle | 19 | Daughter-in-law | — | Maryland |
| 36 | Melvin R Reeder | 28 | Son-in-law | Farmer | Maryland |
| 37 | Eva R Reeder | 25 | Daughter | — | Maryland |
| 38 | Kenneth N Reeder | 6 | Grandson | — | Maryland |
| 39 | Herman R Reeder | 3 | Grandson | — | Maryland |
| 40 | Anna H Leatherman | 35 | Head | — | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)