JW
Jack Williams — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Clair, Illinois
Our Model Tree links this Jack Williams across the 1930 and 1940 US Censuses in St Clair, Illinois (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 5
b. ~1925
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Clair, Illinois |
| Surname | Williams |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | East St Louis City Pt |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Ruby Williams | Daughter | — | 1 | ~1929 |
| Bruce Williams | Daughter | — | 24 | ~1906 |
| Minnie Williams | Head | — | 42 | ~1888 |
| Robert Williams | Son | — | 12 | ~1918 |
| Frank Williams | Son | — | 19 | ~1911 |
| Jack Williams | Son | — | 5 | ~1925 |
| Douglas Williams | Son | — | 6 | ~1924 |
Census Appearances
1930
St Clair, …
Son, age 5
St Clair, Illinois · implied b. ~1925 — 7 household members
| Surname | Williams |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Son, age 15
St.-Clair-County, Illinois · implied b. ~1925 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Jackie |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | St. Clair |
| Occupation | New Worker |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Jack Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Williams
Son · 1930 · age 5 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Douglas Williams
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Williams
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bruce Williams
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Williams
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Williams
Sibling · 1930 · age 12
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 Clair, Illinois
Open full size
1930 US Federal Census — St Clair, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel556:0691)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wiley Cook | 30 | Head | Truck Driver | U S |
| 2 | Pearl Cook | 28 | Wife | — | Missouri |
| 3 | Irma Cook | 8 | Daughter | — | Illinois |
| 4 | Alton Davis | 28 | Head | Foreman | Texas |
| 5 | Myrtle Davis | 25 | Wife | — | Oklahoma |
| 6 | Robert L. Davis | 2 | Son | — | Illinois |
| 7 | Teressa Miller | 16 | Brother-in-law | — | Arkansas |
| 8 | Minnie Williams | 42 | Head | Waitress | Indiana |
| 9 | Bruce Vivian Williams | 24 | Daughter | — | Illinois |
| 10 | Douglas Williams | 6 | Son | — | Illinois |
| 11 | Jack Williams THIS PERSON | 5 | Son | — | Illinois |
| 12 | Ruby J. Williams | 1 | Daughter | — | Illinois |
| 13 | Frank Williams | 19 | Son | Clerical | Illinois |
| 14 | Robert Williams | 12 | Son | — | Illinois |
| 15 | James George | 33 | Head | Laborer | Tennessee |
| 16 | Pearl George | 33 | Wife | — | Missouri |
| 17 | Paul George | 11 | Son | — | Missouri |
| 18 | Burel George | 8 | Son | — | Missouri |
| 19 | George Larenz | 40 | Head | Proprietor | Lithuania |
| 20 | Grace Larenz | 38 | Wife | — | Lithuania |
| 21 | Andrew Larenz | 9 | Son | — | Illinois |
| 22 | Doris M. Larenz | 7 | Daughter | — | Illinois |
| 23 | Horace Owens | 32 | Head | Plumber | Illinois |
| 24 | Alice Owens | 27 | Wife | — | Illinois |
| 25 | Alice J. Owens | 5 | Daughter | — | Illinois |
| 26 | Betty J. Owens | 4 | Daughter | — | Illinois |
| 27 | Walter J. Drummond | 33 | Head | Section Laborer | Illinois |
| 28 | Hazel Drummond | 33 | Wife | — | Illinois |
| 29 | Richard Drummond | 11 | Son | — | Illinois |
| 30 | Matthew Costigan | 38 | Head | Horseshoer | Missouri |
| 31 | Frances Costigan | 38 | Wife | — | Missouri |
| 32 | Margaret Costigan | 15 | Daughter | — | Missouri |
| 33 | Lester Cook | 23 | Head | Weigher | Missouri |
| 34 | Annie Cook | 59 | Mother | — | Missouri |
| 35 | Anton Luepker | 15 | Boarder | — | Indiana |
| 36 | Ray Hiatt | 27 | Head | Shop Clerk | Illinois |
| 37 | Louise Hiatt | 23 | Wife | — | Arkansas |
| 38 | Eulene Hiatt | 53 | Mother | — | Illinois |
| 39 | Henry Hiatt | 22 | Brother | Section Hand | Arkansas |
| 40 | Sammie Woodring | 62 | Boarder | Packer | Kentucky |
| 41 | Leonard Hatchett | 30 | Head | Checker | Illinois |
| 42 | Bessie Hatchett | 20 | Wife | — | Illinois |
| 43 | Gertrude Hatchett | 1 | Daughter | — | Illinois |
| 44 | William Goodman | 26 | Head | Machinist Helper | Missouri |
| 45 | Chloe Goodman | 22 | Wife | — | Missouri |
| 46 | Elias Gray | 28 | Head | Crane Driver | Kentucky |
| 47 | Esther Gray | 29 | Wife | — | Tennessee |
| 48 | Ruth Gray | 9 | Daughter | — | Illinois |
| 49 | Ray Gray | 8 | Son | — | Illinois |
| 50 | Timothy F. Foley | 33 | Head | Fireman | Irish Free State |
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)