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Mary Hall — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Hall across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Hall |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1924 |
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 |
|---|---|---|---|---|
| Mildred Hall | Daughter | — | 15 | ~1925 |
| Helen Hall | Daughter | — | 1 | ~1939 |
| Florence Hall | Daughter | — | 11 | ~1929 |
| Bertha Hall | Daughter | — | 6 | ~1934 |
| Mary Hall | Daughter | — | 16 | ~1924 |
| Margaret Hall | Daughter | — | 4 | ~1936 |
| Henry Hall | Head | — | 45 | ~1895 |
| Charles Hall | Son | — | 12 | ~1928 |
| Raymond Hall | Son | — | 3 | ~1937 |
| William Hall | Son | — | 14 | ~1926 |
| Elsie Hall | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 6
Baltimore, Maryland · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hall |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Student |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 16
Baltimore-City-County, Maryland · implied b. ~1924 — 11 household members
| Surname | Hall |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| 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 Hall across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hall
Daughter · 1940 · age 16 · b. ~1924 · Maryland
★ You are viewing this record
Sibling
Florence Hall
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Hall
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hall
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hall
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Hall
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Hall
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hall
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Hall
Sibling · 1940 · age 6
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01534-00248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bernard T. Duffie | 30 | Head | Band Saw | Maryland |
| 42 | Bertha Duffie | 24 | Wife | — | Maryland |
| 43 | Mary C. Murphy | 60 | Head | — | Maryland |
| 44 | John W. Murphy | 36 | Son | File-Clerk | Maryland |
| 45 | Joseph G. Murphy | 34 | Son | Chauffeur | Maryland |
| 46 | Francis R. Murphy | 29 | Son | Police Officer | Maryland |
| 47 | Louis E. Haynie | 33 | Head | Cooper | Maryland |
| 48 | Margaret Haynie | 26 | Wife | — | Maryland |
| 49 | Louis Jr. Haynie | 7 | Son | — | Maryland |
| 50 | Edward Haynie | 6 | Son | — | Maryland |
| 51 | Louis Goldman | 59 | Head | — | Maryland |
| 52 | Kenneth Goldman | 32 | Son | File-Clerk | Maryland |
| 53 | Morris Levin | 58 | Head | Presser | Russia |
| 54 | Ann Levin | 55 | Wife | — | Russia |
| 55 | Ellis Levin | 25 | Son | Salesman | Maryland |
| 56 | Jack Levin | 22 | Son | Storekeeper | Maryland |
| 57 | Phillip Levin | 19 | Son | Shoemaker | Maryland |
| 58 | Henry Hall | 45 | Head | Laborer | Vermont |
| 59 | Elsie Hall | 36 | Wife | — | Maryland |
| 60 | Mary Hall THIS PERSON | 16 | Daughter | — | Maryland |
| 61 | Mildred Hall | 15 | Daughter | — | Maryland |
| 62 | William Hall | 14 | Son | — | Maryland |
| 63 | Charles Hall | 12 | Son | — | Maryland |
| 64 | Florence Hall | 11 | Daughter | — | Maryland |
| 65 | Bertha Hall | 6 | Daughter | — | Maryland |
| 66 | Margaret Hall | 4 | Daughter | — | Maryland |
| 67 | Raymond Hall | 3 | Son | — | Maryland |
| 68 | Helen Hall | 1 | Daughter | — | Maryland |
| 69 | William Scholz | 58 | Head | Flagman | Maryland |
| 70 | Mary A. Scholz | 64 | Wife | — | Indiana |
| 71 | James F. Scholz | 23 | Son | Laborer | Maryland |
| 72 | Mildred Fulton | 17 | Daughter | — | Maryland |
| 73 | Bertha Fulton | 0 | Daughter | — | Maryland |
| 74 | Josephine Petrulionis | 40 | Head | Lining Maker | Maryland |
| 75 | Joseph Jr. Petrulionis | 10 | Son | — | Maryland |
| 76 | George G. Rielinsky | 28 | Brother | Bartender | Maryland |
| 77 | Joseph Rielinsky | 50 | Uncle | Presser | Lithuania |
Related Census Records
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)