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Ruby Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Mary-County, Louisiana
Our Model Tree links this Ruby Williams across the 1930 and 1940 US Censuses in St.-Mary-County, Louisiana (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 10-person household.
Age 16
b. ~1924
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Mary-County, Louisiana |
| Surname | Williams |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (County) | St. Mary |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 6 |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | Baldwin Watkins |
| Est. Birth Year | ~1924 |
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 Ruby | Age | Birth yr |
|---|---|---|---|---|
| Ruby Williams | Daughter | — | 16 | ~1924 |
| Clara Williams | Daughter | — | 15 | ~1925 |
| Audrey Williams | Daughter | — | 9 | ~1931 |
| Alfred Williams | Head | — | 43 | ~1897 |
| Burton Williams | Son | — | 14 | ~1926 |
| Alfred Williams | Son | — | 17 | ~1923 |
| Albert Williams | Son | — | 11 | ~1929 |
| Afton Williams | Son | — | 3 | ~1937 |
| Irving Williams | Son | — | 7 | ~1933 |
| Gustavia Williams | Spouse | — | 38 | ~1902 |
Census Appearances
1930
St Mary, …
Daughter, age 5
St Mary, Louisiana · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | William |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | none |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
St.-Mary-County, Louisiana
Daughter, age 16
St.-Mary-County, Louisiana · implied b. ~1924 — 10 household members
| Surname | Williams |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (County) | St. Mary |
| Industry | 0 |
| Highest Grade | No 6 |
| 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 Ruby Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruby Williams
Daughter · 1940 · age 16 · b. ~1924 · Louisiana
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Sibling
Albert Williams
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Burton Williams
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Williams
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irving Williams
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Afton Williams
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Williams
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Williams
Sibling · 1940 · age 17
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 — St.-Mary-County, Louisiana
Open full size
1940 US Federal Census — St.-Mary-County, Louisiana
Page Contents
18 people indexed on this census page (nara:1940:m-t0627-01454-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Butler | 3 | Son | — | Louisiana |
| 2 | Clayton Richard | 26 | Step-son | No | Louisiana |
| 3 | Alfred Williams | 43 | Head | — | Louisiana |
| 4 | Gustavia Williams | 38 | Wife | — | Louisiana |
| 5 | Clara Williams | 15 | Daughter | — | Louisiana |
| 6 | Alfred Williams | 17 | Son | Farm | Louisiana |
| 7 | Ruby Williams THIS PERSON | 16 | Daughter | — | Louisiana |
| 8 | Burton Williams | 14 | Son | — | Louisiana |
| 9 | Albert Williams | 11 | Son | — | Louisiana |
| 10 | Audrey Williams | 9 | Daughter | — | Louisiana |
| 11 | Irving Williams | 7 | Son | — | Louisiana |
| 12 | Afton Williams | 3 | Son | — | Louisiana |
| 13 | James Johnson | 44 | Head | Farm | Louisiana |
| 14 | Ethel Johnson | 42 | Wife | — | Louisiana |
| 15 | Eramus Martin | 76 | Mother | — | Louisiana |
| 16 | Frank Martin | 16 | Adopt. Brother | — | Louisiana |
| 17 | Walter Mcdonald | 34 | Head | 48 | Texas |
| 18 | Zelma Mcdonald | 29 | Wife | — | Texas |
Related Census Records
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)