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Mary Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Mack across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 2-person household.
Age 66
b. ~1874
Female
Head
Born: Maryland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Mack |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | No 0 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1874 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Allen Mack | Daughter | — | 37 | ~1903 |
| Mary Mack | Head | — | 66 | ~1874 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 48
Baltimore, Maryland · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Marion |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Cook |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 57
Baltimore, Maryland · implied b. ~1873 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Marion |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 32 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 66
Baltimore-City-County, Maryland · implied b. ~1874 — 2 household members
| Surname | Mack |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Highest Grade | No 0 |
| 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 Mack across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mack
Head · 1940 · age 66 · b. ~1874 · Maryland
★ You are viewing this record
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
40 people indexed on this census page (nara:1940:m-t0627-01526-00319)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Locklear | 15 | Daughter | — | Maryland |
| 42 | Robert Watt | 32 | Head | Counterman | Maryland |
| 43 | Josephine Watt | 30 | Wife | Waitress | Maryland |
| 44 | Charles Dorsey | 16 | Nephew | — | Maryland |
| 45 | Hannah Trueman | 45 | Head | Laundress | Maryland |
| 46 | Anna Peck | 66 | Sister | — | Maryland |
| 47 | Katherine Adams | 46 | Head | Laundress | Maryland |
| 48 | George Grandison | 44 | Lodger | Labor | Virginia |
| 49 | Floyd Boston | 40 | Lodger | Butcher | Maryland |
| 50 | Bennie Lake | 49 | Head | — | Maryland |
| 51 | Margaret Lake | 49 | Wife | — | Maryland |
| 52 | William Wilson | 48 | Head | Cook | Maryland |
| 53 | Elizabeth Wilson | 46 | Wife | Domestic | Maryland |
| 54 | Robert Wilson | 2 | Son | — | Maryland |
| 55 | Flora Blackwell | 30 | Head | — | Maryland |
| 56 | Mary Blackwell | 14 | Daughter | — | Maryland |
| 57 | George Blackwell | 12 | Son | — | Maryland |
| 58 | Irene Blackwell | 10 | Daughter | — | Maryland |
| 59 | John Robinson | 22 | Lodger | Labor | Maryland |
| 60 | Pearl Robinson | 20 | Lodger | Domestic | Maryland |
| 61 | John Talbott | 35 | Head | Labor | Maryland |
| 62 | Susie Talbott | 34 | Wife | — | Maryland |
| 63 | George Talbott | 4 | Son | — | Maryland |
| 64 | Mary Mack THIS PERSON | 66 | Head | — | Maryland |
| 65 | Allen Mack | 37 | Daughter | Domestic | Maryland |
| 66 | Lettie Fisher | 36 | Head | Chauffeur | Maryland |
| 67 | Emery Fisher | 39 | Son-in-law | Chauffeur | Maryland |
| 68 | Irvine Fisher | 11 | Grandson | — | Maryland |
| 69 | Alvin Fisher | 8 | Grandson | — | Maryland |
| 70 | Francis Gray | 39 | Head | Clerk | Maryland |
| 71 | Ravine Gray | 35 | Wife | — | Maryland |
| 72 | Sarah Gray | 16 | Daughter | — | Maryland |
| 73 | Elaine Gray | 13 | Daughter | — | Maryland |
| 74 | Francis Gray | 12 | Son | — | Maryland |
| 75 | Sally Merriweather | 80 | Mother | — | Virginia |
| 76 | Samuel Socolar | 46 | Head | Clerk | Russia |
| 77 | Sarah Socolar | 41 | Wife | — | Maryland |
| 78 | Sidney Socolar | 16 | Son | — | Maryland |
| 79 | Robert Truitt | 32 | Head | Chauffeur | Maryland |
| 80 | Martha Truitt | 32 | Wife | Domestic | 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)