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Mary Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Plaquemines-County, Louisiana
Our Model Tree links this Mary Mack across the 1930 and 1940 US Censuses in Plaquemines-County, Louisiana (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plaquemines-County, Louisiana |
| Surname | Mack |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Police Jury Ward 9 |
| 1935 Residence (County) | Plaquemines |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | Police Jury Ward 9 |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Mack | Daughter | — | 15 | ~1925 |
| George Mack | Head | — | 52 | ~1888 |
| Olivia Mack | Spouse | — | 46 | ~1894 |
| Clarence Mack | Son | — | 17 | ~1923 |
| Emmet Washington | Other | — | 4 | ~1936 |
| George Mack | Son | — | 21 | ~1919 |
| Mabel Mack | Daughter | — | 23 | ~1917 |
| Rose Lee | Daughter | — | 3 | ~1937 |
| Mary Mack | Daughter | — | 12 | ~1928 |
| Rose Mack | Daughter | — | 7 | ~1933 |
Census Appearances
1930
St Tammany, …
Daughter, age 3
St Tammany, Louisiana · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Mississippi |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Plaquemines-County, Louisiana
Daughter, age 12
Plaquemines-County, Louisiana · implied b. ~1928 — 10 household members
| Surname | Mack |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Police Jury Ward 9 |
| 1935 Residence (County) | Plaquemines |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 · 1940 · age 12 · b. ~1928 · Louisiana
★ You are viewing this record
Sibling
Alice Mack
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Mack
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Mack
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Mack
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mack
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Lee
Sibling · 1940 · age 3
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 — Plaquemines-County, Louisiana
Open full size
1940 US Federal Census — Plaquemines-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01439-00226)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Louis R. Cappiello | 43 | Head | Farmer | Louisiana |
| 42 | Bernice Cappiello | 25 | Wife | — | Louisiana |
| 43 | Reepa Cappiello | 6 | Son | — | Louisiana |
| 44 | Charles Cappiello | 4 | Son | — | Louisiana |
| 45 | Robert Cappiello | 3 | Son | — | Louisiana |
| 46 | Walker Solis | 29 | Head | Chemical Laboratory Assistant | Louisiana |
| 47 | Marie Solis | 26 | Wife | — | Louisiana |
| 48 | Arthur S. Udetad | Vdetad | 54 | Head | Agent | Illinois |
| 49 | Josephine Udetad | Vdetad | 41 | Wife | — | Louisiana |
| 50 | Sigwald Jr. Udetad | Vdetad | 15 | Son | — | Louisiana |
| 51 | Ruth Ann Udetad | Vdetad | 13 | Daughter | — | Louisiana |
| 52 | David Solis | 57 | Head | Farmer | Louisiana |
| 53 | Cecilia Solis | 53 | Wife | — | Louisiana |
| 54 | Louis Hingles | 56 | Head | Farmer | Louisiana |
| 55 | Mathilda Hingles | 50 | Wife | — | Louisiana |
| 56 | Jules L. Hingles | 27 | Son | Foreman | Louisiana |
| 57 | Mabel Hingles | 27 | Daughter | Elevator Operator | Louisiana |
| 58 | Harry J. Bein | 66 | Head | Lock And Dam Repair Shop | Virginia |
| 59 | Mary Bein | 42 | Wife | — | Louisiana |
| 60 | Harry J. Jr. Bein | 7 | Son | — | Mississippi |
| 61 | George Mack | 52 | Head | Pipe Fitter | Louisiana |
| 62 | Olivia Mack | 46 | Wife | — | Louisiana |
| 63 | Mabel Mack | 23 | Daughter | — | Louisiana |
| 64 | George Jr. Mack | 21 | Son | New Worker | Louisiana |
| 65 | Clarence Mack | 17 | Son | New Worker | Louisiana |
| 66 | Alice Mack | 15 | Daughter | — | Louisiana |
| 67 | Mary Mack THIS PERSON | 12 | Daughter | — | Louisiana |
| 68 | Rose Mack | 7 | Daughter | — | Louisiana |
| 69 | Emmet Washington | 4 | Grandson | — | Louisiana |
| 70 | Rose Lee | 3 | Daughter | — | Louisiana |
| 71 | Elizabeth Mccurdy | 62 | Head | Store Keeper | Louisiana |
| 72 | Marvin S. Bryant | 28 | Son-in-law | Shipping Clerk | Texas |
| 73 | Pauline Bryant | 31 | Daughter | — | Louisiana |
| 74 | Pearl C. Bryant | 3 | Daughter | — | Louisiana |
| 75 | Ruth F. Bavil | Baril | 19 | Niece | — | Louisiana |
| 76 | Ovide Solis | 58 | Head | Watchman | Louisiana |
| 77 | James A. Geringue | 56 | Head | Farm Hand | Louisiana |
| 78 | Leodice Geringue | 54 | Wife | — | Louisiana |
| 79 | Edward Geringue | 15 | Son | New Worker | Louisiana |
| 80 | John Geringue | 12 | Son | — | Louisiana |
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)