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Mary Mack — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Mary S, Maryland
Our Model Tree links this Mary Mack across the 1930 and 1940 US Censuses in St Mary S, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 12-person household.
Age 8
b. ~1922
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Mary S, Maryland |
| Surname | Mack |
| Given Name | Mary T |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 8 |
| 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 | Seventh Election District |
| Est. Birth Year | ~1922 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Anna Jones | Daughter | — | 13 | ~1917 |
| Mary Jones | Daughter | — | 5 | ~1925 |
| Joseph Jones | Son | — | 27 | ~1903 |
| Robert Jones | Son | — | 18 | ~1912 |
| James Jones | Head | — | 51 | ~1879 |
| Mary Jones | Daughter | — | 21 | ~1909 |
| William Jones | Son | — | 22 | ~1908 |
| James Jones | Son | — | 29 | ~1901 |
| Mary Mack | Daughter | — | 8 | ~1922 |
| Cecelia Jones | Daughter | — | 9 | ~1921 |
| John Jones | Son | — | 26 | ~1904 |
| Anna Jones | Spouse | — | 48 | ~1882 |
Census Appearances
1930
St Mary …
Daughter, age 8
St Mary S, Maryland · implied b. ~1922 — 12 household members
| Surname | Mack |
| Given Name | Mary T |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 8 |
| 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
Baltimore-County, Maryland
Daughter, age 18
Baltimore-County, Maryland · implied b. ~1922 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Marguerita |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Owings Mills |
| 1935 Residence (County) | Baltimore |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 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 Mack across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mack
Daughter · 1930 · age 8 · b. ~1922 · Maryland
★ You are viewing this record
Sibling
Robert Jones
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Jones
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Jones
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Jones
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Jones
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Jones
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Jones
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecelia Jones
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Jones
Sibling · 1930 · age 22
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 — St Mary S, Maryland
Open full size
1930 US Federal Census — St Mary S, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus879unit:0267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James W Jones | 51 | Head | Waterman | Maryland |
| 2 | Anna E Jones | 48 | Wife | — | Maryland |
| 3 | James W Jones | 29 | Son | Waterman | Maryland |
| 4 | Joseph R Jones | 27 | Son | Waterman | Maryland |
| 5 | John E Jones | 26 | Son | Waterman | Maryland |
| 6 | William B Jones | 22 | Son | Waterman | Maryland |
| 7 | Robert W Jones | 18 | Son | Waterman | Maryland |
| 8 | Mary A Jones | 21 | Daughter | Servant | Maryland |
| 9 | Anna L Jones | 13 | Daughter | — | Maryland |
| 10 | Cecelia E Jones | 9 | Daughter | — | Maryland |
| 11 | Mary L Jones | 5 | Daughter | — | Maryland |
| 12 | Mary T Mack THIS PERSON | 8 | Daughter | — | Maryland |
| 13 | Stephen Mack | 48 | Head | Waterman | Maryland |
| 14 | Rosetta Mack | 38 | Wife | — | Maryland |
| 15 | Andrew Mack | 19 | Son | Waterman | Maryland |
| 16 | Robert L Mack | 13 | Son | — | Maryland |
| 17 | Eldridge Young | 9 | Step-Nephew | — | Maryland |
| 18 | Mary Middleton | 48 | Head | Servant | Virginia |
| 19 | Bernice Middleton | 21 | Daughter | — | Maryland |
| 20 | Louise M Middleton | 16 | Daughter | — | Maryland |
| 21 | Elizabeth M Middleton | 11 | Daughter | — | Maryland |
| 22 | Joseph L Middleton | 12 | Son | — | Maryland |
| 23 | Annie T Middleton | 6 | Daughter | — | Maryland |
| 24 | George A Middleton | 4 | Son | — | Maryland |
| 25 | Leonard R Hall | 32 | Head | Farmer | Maryland |
| 26 | Myrtle Hall | 31 | Wife | — | Maryland |
| 27 | Virginia G Hall | 11 | Daughter | — | Maryland |
| 28 | James L Hall | 12 | Son | — | Maryland |
| 29 | Harriet E Hall | 7 | Daughter | — | Maryland |
| 30 | Herbert B Hall | 5 | Son | — | Maryland |
| 31 | Mary M Hall | 4 | Daughter | — | Maryland |
| 32 | Charles H Hall | 2 | Son | — | Maryland |
| 33 | George W Ellis | 31 | Head | Waterman | Maryland |
| 34 | Martha M Ellis | 28 | Wife | — | Maryland |
| 35 | Lester Ellis | 3 | Son | Waterman | Maryland |
| 36 | Elizabeth M Ellis | 2 | Public school | Teacher | Maryland |
| 37 | Marion A Ellis | 2 | Daughter | — | Maryland |
| 38 | Charles Banagan | 27 | Head | Waterman | Maryland |
| 39 | Martha B Banagan | 23 | Wife | — | Maryland |
| 40 | John H Banagan | 55 | Head | Waterman | Maryland |
| 41 | Mary M Banagan | 53 | Wife | — | Maryland |
| 42 | William S Banagan | 21 | Son | Waterman | Maryland |
| 43 | Louise H Banagan | 15 | Daughter | — | Maryland |
| 44 | Mary L Owens | 45 | Head | Farmer | Maryland |
| 45 | Frank L Owens | 23 | Son | Laborer | Maryland |
| 46 | Oscar E Owens | 12 | Son | — | Maryland |
| 47 | Agnes A Owens | 9 | Daughter | — | Maryland |
| 48 | Richard T Cheadle | 69 | Head | Waterman | Maryland |
| 49 | Anne B Cheadle | 60 | Wife | — | Maryland |
| 50 | George L Rice | 14 | Son | — | 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)