MG
Mary Graham — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Calvert, Maryland
Our Model Tree links this Mary Graham across the 1930 and 1940 US Censuses in Calvert, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 14-person household.
Age 17
b. ~1913
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Calvert, Maryland |
| Surname | Graham |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 17 |
| 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 | Dist 2 Prince |
| Est. Birth Year | ~1913 |
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.
14 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Graham | Daughter | — | 17 | ~1913 |
| Florence Graham | Daughter | — | 16 | ~1914 |
| Mamie Graham | Daughter | — | 4 | ~1926 |
| Antoinette Graham | Daughter | — | 10 | ~1920 |
| Pearl Graham | Daughter | — | 9 | ~1921 |
| Walter Graham | Head | — | 50 | ~1880 |
| John Graham | Son | — | 3 | ~1927 |
| Fred Graham | Son | — | 11 | ~1919 |
| Norman Graham | Son | — | 19 | ~1911 |
| James Graham | Son | — | 14 | ~1916 |
| Walter Graham | Son | — | 6 | ~1924 |
| Herman Graham | Son | — | 5 | ~1925 |
| Bruce Graham | Son | — | 1 | ~1929 |
| Florence Graham | Spouse | — | 37 | ~1893 |
Census Appearances
1930
Calvert, Maryland
Daughter, age 17
Calvert, Maryland · implied b. ~1913 — 14 household members
| Surname | Graham |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 17 |
| 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
Calvert-County, Maryland
Daughter, age 27
Calvert-County, Maryland · implied b. ~1913 — 15 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Graham |
| Given Name | Maryalice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | First Election District Solomons Island |
| 1935 Residence (County) | Calvert |
| Highest Grade | No 5 |
| 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 Graham across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Graham
Daughter · 1930 · age 17 · b. ~1913 · Maryland
★ You are viewing this record
Sibling
Norman Graham
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Graham
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Graham
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Graham
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bruce Graham
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Graham
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Graham
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Graham
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Graham
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Antoinette Graham
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herman Graham
Sibling · 1930 · age 5
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 — Calvert, Maryland
Open full size
1930 US Federal Census — Calvert, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus871unit:0606)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Fowler William E. | 10 | Son | — | Maryland |
| 52 | Ernest A. | 8 | Son | — | Maryland |
| 53 | Evelyn V. | 6 | Daughter | — | Maryland |
| 54 | Robert D. | 4 | Son | — | Maryland |
| 55 | Hellen D. | 3 | Daughter | — | Maryland |
| 56 | Mary E. | 2 | Daughter | — | Maryland |
| 57 | Ellsworth Beverly | 45 | Helper | Farmer | Maryland |
| 58 | Ernest Ely | 6 | Boarder | — | Maryland |
| 59 | Billy Ely | 3 | Boarder | — | Maryland |
| 60 | Elizabeth Fowler | 14 | Cousin | — | Maryland |
| 61 | S. W. Ashburn | 48 | Head | Farmer | North Carolina |
| 62 | Ida Ashburn | 49 | Wife | — | North Carolina |
| 63 | Ruth F. Ashburn | 18 | Daughter | — | North Carolina |
| 64 | S. W. Jr. Ashburn | 15 | Son | — | North Carolina |
| 65 | Sarah E. Ashburn | 12 | Daughter | — | North Carolina |
| 66 | Richard W. Ashburn | 9 | Son | — | Maryland |
| 67 | W. C. Pardon | 48 | Head | Farmer | Maryland |
| 68 | Clair E. Pardon | 46 | Wife | — | Maryland |
| 69 | William E. Pardon | 17 | Son | Laborer | Maryland |
| 70 | E. Estelle Pardon | 12 | Daughter | — | Maryland |
| 71 | Erasmus J. Pardon | 8 | Son | — | Maryland |
| 72 | Isaac J. Pardon | 5 | Son | — | Maryland |
| 73 | George Jr. Gross | 69 | Head | Farmer | Maryland |
| 74 | Mary Gross | 48 | Wife | — | Maryland |
| 75 | Walter Graham | 50 | Head | Farmer | Maryland |
| 76 | Florence V. Graham | 37 | Wife | — | Maryland |
| 77 | Norman Graham | 19 | Son | Laborer | Maryland |
| 78 | Mary L. Graham THIS PERSON | 17 | Daughter | — | Maryland |
| 79 | Florence Graham | 16 | Daughter | — | Maryland |
| 80 | James Graham | 14 | Son | — | Maryland |
| 81 | Fred Graham | 11 | Son | — | Maryland |
| 82 | Antoinette Graham | 10 | Daughter | — | Maryland |
| 83 | Pearl Graham | 9 | Daughter | — | Maryland |
| 84 | Walter Graham | 6 | Son | — | Maryland |
| 85 | Herman Graham | 5 | Son | — | Maryland |
| 86 | Mamie Graham | 4 | Daughter | — | Maryland |
| 87 | John Graham | 3 | Son | — | Maryland |
| 88 | Bruce Graham | 1 | Son | — | Maryland |
| 89 | John F. Gross | 65 | Head | Farmer | Maryland |
| 90 | Maggie A. Gross | 45 | Wife | — | Maryland |
| 91 | Thomas Gross | 44 | Head | Laborer | Maryland |
| 92 | Cornelia Gross | 24 | Wife | — | Maryland |
| 93 | H. B. Freeman | 42 | Head | Mill Hand | Maryland |
| 94 | Hazel Freeman | 41 | Wife | — | Maryland |
| 95 | Gordon Freeman | 13 | Son | — | Maryland |
| 96 | Teresa Freeman | 7 | Daughter | — | Maryland |
| 97 | C. W. Bedford | 43 | Head | Farmer | Maryland |
| 98 | B. Bedford | 40 | Wife | Clerk | Maryland |
| 99 | Mary A. Bedford | 18 | Daughter | — | Maryland |
| 100 | Grace Bedford | 15 | 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)