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Mary Logan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Logan across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 11-person household.
Age 15
b. ~1915
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Logan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Jamaica B.W.I. |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1915 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Logan | Daughter | — | 15 | ~1915 |
| Veronica Logan | Daughter | — | 7 | ~1923 |
| Bernadette Logan | Daughter | — | 4 | ~1926 |
| Ivy Logan | Daughter | — | 6 | ~1924 |
| Frances Logan | Daughter | — | 1 | ~1929 |
| Lelia Logan | Daughter | — | 8 | ~1922 |
| Dundas Logan | Head | — | 42 | ~1888 |
| Robert Ryan | Other | — | 23 | ~1907 |
| Grover White | Other | — | 30 | ~1900 |
| Thaddeus Logan | Son | — | 11 | ~1919 |
| Mary Logan | Spouse | — | 35 | ~1895 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 15
Baltimore, Maryland · implied b. ~1915 — 11 household members
| Surname | Logan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Jamaica B.W.I. |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Steel Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 29
Baltimore-City-County, Maryland · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logan |
| Given Name | Marget |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Laborer |
| Industry | Shipbuilding |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | No 7 |
| 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 Logan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Logan
Daughter · 1930 · age 15 · b. ~1915 · Maryland
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Sibling
Thaddeus Logan
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernadette Logan
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lelia Logan
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Logan
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ivy Logan
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veronica Logan
Sibling · 1930 · age 7
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
47 people indexed on this census page (ia:1930:15thcensus855unit:0264)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Brooks | 40 | Head | Laborer | Maryland |
| 2 | Hattie Brooks | 47 | Wife | Cook | Virginia |
| 3 | Clara Moors | 29 | Lodger | — | Maryland |
| 4 | Wm Moors | 29 | Lodger | Waiter | Maryland |
| 5 | Herman Williams | 40 | Lodger | Chauffeur | North Carolina |
| 6 | Lila Williams | 30 | Lodger | Janitor | South Carolina |
| 7 | Wm Decoursey | 49 | Lodger | Cook | Maryland |
| 8 | Annie Ringgold | 60 | Head | Janitor | Maryland |
| 9 | Charles Ringgold | 23 | Son | — | Maryland |
| 10 | William Ringgold | 20 | Son | Laborer | Maryland |
| 11 | Dundas Logan | 42 | Head | Laborer | Jamaica B.W.I. |
| 12 | Mary Logan | 35 | Wife | Cook | Maryland |
| 13 | Robert Ryan | 23 | Lodger | — | Maryland |
| 14 | Grover White | 30 | Lodger | Chauffeur | Ohio |
| 15 | Mary Logan THIS PERSON | 15 | Daughter | Laborer | Maryland |
| 16 | Thaddeus Logan | 11 | Son | — | Maryland |
| 17 | Lelia Logan | 8 | Daughter | — | Maryland |
| 18 | Veronica Logan | 7 | Daughter | — | Maryland |
| 19 | Ivy Logan | 6 | Daughter | — | Maryland |
| 20 | Bernadette Logan | 4 | Daughter | — | Maryland |
| 21 | Frances Logan | 1 | Daughter | — | Maryland |
| 22 | Chas. A. Barthorps | 45 | Head | — | North Carolina |
| 23 | Ethel Barthorps | 36 | Wife | — | Maryland |
| 24 | Elizabeth Barthorps | 21 | Daughter | — | Maryland |
| 25 | Spencer Battle | 41 | Lodger | Secret Service | North Carolina |
| 26 | Doris Battle | 2 | Daughter | — | Maryland |
| 27 | Olivia Battle | 0 | Daughter | — | Maryland |
| 28 | Henry Bell | 74 | Lodger | — | Maryland |
| 29 | Melvin Russell | 38 | Lodger | Laborer | Maryland |
| 30 | Mattie Russell | 32 | Lodger | Servant | Virginia |
| 31 | Genevieve Dyer | 21 | Lodger | Servant | Maryland |
| 32 | Howard Smith | 54 | Head | Servant | Maryland |
| 33 | Edith C. Smith | 52 | Sister | — | Maryland |
| 34 | Nettie Smith | 40 | Sister | Servant | Maryland |
| 35 | Spencer Mason | 26 | Head | Chauffeur | Maryland |
| 36 | Augusta Mason | 24 | Wife | Servant | Maryland |
| 37 | Carrie Finney | 29 | Lodger | Servant | Virginia |
| 38 | Richard Johnson | 25 | Head | Porter | Maryland |
| 39 | Isabelle Johnson | 22 | Wife | — | Maryland |
| 40 | Isabelle Johnson | 5 | Daughter | — | Maryland |
| 41 | Richard Jr. Johnson | 3 | Son | — | Maryland |
| 42 | Roger E. Johnson | 1 | Son | — | Maryland |
| 43 | Thomas Russell | 25 | Head | Laborer | North Carolina |
| 44 | Ida Russell | 23 | Wife | Servant | Virginia |
| 45 | Leanna Watkins | 32 | Head | Servant | Virginia |
| 46 | Marvin Everhart | 25 | Lodger | Porter | Georgia |
| 47 | Jennie Madison | 22 | Lodger | Servant | Virginia |
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)