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Mary Willis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Mary-County, Louisiana
Our Model Tree links this Mary Willis across the 1930 and 1940 US Censuses in St.-Mary-County, Louisiana (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 10-person household.
Age 39
b. ~1901
Female
Spouse
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Mary-County, Louisiana |
| Surname | Willis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | City of Franklin |
| 1935 Residence (County) | St. Mary |
| Additional Details | |
| Occupation | Oyster opener |
| Industry | Fish factory |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 496 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Oyster Opener |
| Township / Ward | City Of Franklin |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Willie Jones | Daughter | — | 12 | ~1928 |
| Mary Willis | Daughter | — | 9 | ~1931 |
| Alma Willis | Daughter | — | 13 | ~1927 |
| Annie Willis | Daughter | — | 12 | ~1928 |
| Elnora Jones | Daughter | — | 10 | ~1930 |
| Flora Willis | Daughter | — | 22 | ~1918 |
| Willie Willis | Head | — | 49 | ~1891 |
| Le Willis | Son | — | 18 | ~1922 |
| Albert Willis | Son | — | 22 | ~1918 |
| Mary Willis | Spouse | — | 39 | ~1901 |
Census Appearances
1930
St Mary, …
Spouse, age 32
St Mary, Louisiana · implied b. ~1898 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Willis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 16 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
St.-Mary-County, Louisiana
Spouse, age 39
St.-Mary-County, Louisiana · implied b. ~1901 — 10 household members
| Surname | Willis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | City of Franklin |
| 1935 Residence (County) | St. Mary |
| Occupation | Oyster opener |
| Industry | Fish factory |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 496 |
| Highest Grade | No 0 |
| 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 Willis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Willis
Spouse · 1940 · age 39 · b. ~1901 · Louisiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Mary-County, Louisiana
Open full size
1940 US Federal Census — St.-Mary-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01454-00230)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Pearly Johnson | 35 | Wife | — | Louisiana |
| 2 | Sandie Johnson | 16 | Son | Dish Washer | Louisiana |
| 3 | Florestine Johnson | 15 | Daughter | — | Louisiana |
| 4 | Julius C Johnson | 5 | Son | — | Louisiana |
| 5 | Leola Johnson | 2 | Daughter | — | Louisiana |
| 6 | Willie Willis | 49 | Head | Junk Dealer | Louisiana |
| 7 | Mary Willis THIS PERSON | 39 | Wife | Oyster Opener | Louisiana |
| 8 | Albert Willis | 22 | Son | Oyster Opener | Louisiana |
| 9 | Le Roy Willis | 18 | Son | Field Work | Louisiana |
| 10 | Flora Willis | 22 | Daughter | — | Louisiana |
| 11 | Alma Willis | 13 | Daughter | — | Louisiana |
| 12 | Mary Willis | 9 | Daughter | — | Louisiana |
| 13 | Willie B Jones | 12 | Daughter | — | Louisiana |
| 14 | Elnora Jones | 10 | Daughter | — | Louisiana |
| 15 | Annie Willis | 12 | Daughter | — | Louisiana |
| 16 | Son Clark | 35 | Head | Laborer | Louisiana |
| 17 | John P. Stewart | 19 | Lodger | Dish Washer | Louisiana |
| 18 | Janie Nelson | 19 | Lodger | — | Georgia |
| 19 | Leola Terichan | 19 | Lodger | — | Louisiana |
| 20 | Leola Davis | 19 | Lodger | — | Texas |
| 21 | Eddie Hellums | 5 | Lodger | — | Georgia |
| 22 | Kelly Styles | 57 | Head | — | Louisiana |
| 23 | Martha Styles | 49 | Wife | Cook | Louisiana |
| 24 | Henry Styles | 22 | Son | Cook | Louisiana |
| 25 | Vera Shivers | 25 | Daughter | Cook | Louisiana |
| 26 | Carey Shivers | 8 | Grandson | — | Louisiana |
| 27 | Arnold Howard | 7 | Grandson | — | Louisiana |
| 28 | Henry Johnson | 34 | Head | Yard Man | Louisiana |
| 29 | Adelia Johnson | 34 | Wife | — | Louisiana |
| 30 | Ola Mae Johnson | 9 | Daughter | — | Louisiana |
| 31 | Henry Jr Johnson | 8 | Son | — | Louisiana |
| 32 | Alvin Johnson | 6 | Son | — | Louisiana |
| 33 | Yvonne Johnson | 3 | Daughter | — | Louisiana |
| 34 | Elizabeth Mitchell | 31 | Head | — | Louisiana |
| 35 | Sim Broussard | 58 | Head | Proprietor | Louisiana |
| 36 | Marcie Broussard | 45 | Wife | — | Louisiana |
| 37 | Edward Broussard | 30 | Son | Truck Driver | Louisiana |
| 38 | Lillie Broussard | 21 | Daughter | Cook | Louisiana |
| 39 | Harry Broussard | 12 | Son | — | Louisiana |
| 40 | Gertrude Jones | 39 | Head | Cook | 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)