WT
William Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jersey-County, Illinois
Our Model Tree links this William Tracy across the 1930 and 1940 US Censuses in Jersey-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 6-person household.
Age 17
b. ~1923
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jersey-County, Illinois |
| Surname | Tracy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mississippi Township |
| 1935 Residence (County) | Jersey |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Mississippi Township |
| Est. Birth Year | ~1923 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| John Tracy | Son | — | 13 | ~1927 |
| Fred Tracy | Head | — | 50 | ~1890 |
| William Tracy | Son | — | 17 | ~1923 |
| Mary Tracy | Daughter | — | 11 | ~1929 |
| Nellie Tracy | Spouse | — | 45 | ~1895 |
| Robert Tracy | Son | — | 15 | ~1925 |
Census Appearances
1930
Jersey, Illinois
Son, age 7
Jersey, Illinois · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracy |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Class of Worker | 7 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Jersey-County, Illinois
Son, age 17
Jersey-County, Illinois · implied b. ~1923 — 6 household members
| Surname | Tracy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mississippi Township |
| 1935 Residence (County) | Jersey |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| 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 William Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Tracy
Son · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
John Tracy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Tracy
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Tracy
Sibling · 1940 · age 15
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 — Jersey-County, Illinois
Open full size
1940 US Federal Census — Jersey-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00817-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Howard Burness | 4 | Son | — | Missouri |
| 42 | Sadie Ann Burness | 1 | Daughter | — | Illinois |
| 43 | Elmer Westfall | 44 | Head | Farmer | Illinois |
| 44 | Francis Westfall | 35 | Wife | — | Illinois |
| 45 | Lonny Westfall | 14 | Son | — | Illinois |
| 46 | Donald Westfall | 10 | Son | — | Illinois |
| 47 | Phillip Westfall | 7 | Son | — | Illinois |
| 48 | Carl Carter | 34 | Hired hand | Farm Hand | Illinois |
| 49 | Dr. Laurence Enos | 70 | Head | Doctor | Illinois |
| 50 | Mary J. Enos | 73 | Wife | — | Massachusetts |
| 51 | Fred Tracy | 50 | Head | Farmer | Illinois |
| 52 | Nellie Tracy | 45 | Wife | — | Illinois |
| 53 | William Tracy THIS PERSON | 17 | Son | — | Illinois |
| 54 | Robert Tracy | 15 | Son | — | Illinois |
| 55 | John Tracy | 13 | Son | — | Illinois |
| 56 | Mary Tracy | 11 | Daughter | — | Illinois |
| 57 | Edward G. Clark | 33 | Head | Farmer | Illinois |
| 58 | Margueritte Clark | 30 | Wife | — | Illinois |
| 59 | George Clark | 6 | Son | — | Illinois |
| 60 | Rosemary Clark | 5 | Daughter | — | Illinois |
| 61 | Lottie Clark | 57 | Mother | — | Illinois |
| 62 | Richard Quinn | 79 | Lodger | — | North Carolina |
| 63 | Frank E. Enos | 56 | Head | Farmer | Illinois |
| 64 | William Maines | 53 | Lodger | — | Illinois |
| 65 | Carl D. Pruitt | 58 | Head | Farmer | Illinois |
| 66 | Chloe Pruitt | 52 | Wife | Mason | Illinois |
| 67 | Virgil Pruitt | 15 | Son | — | Illinois |
| 68 | Walter Stahl | 46 | Head | Farmer | Illinois |
| 69 | Louise Stahl | 44 | Wife | — | Illinois |
| 70 | Nicholas Stahl | 23 | Son | — | Illinois |
| 71 | Orville P. Grier | 40 | Head | Farmer | Illinois |
| 72 | Irene Grier | 39 | Wife | — | Illinois |
| 73 | Doris Jean Grier | 12 | Daughter | — | Illinois |
| 74 | Vernon East | 16 | — | Farm Hand | Illinois |
| 75 | Kathryne Okadia | 17 | — | Housekeeper | Illinois |
| 76 | Andrew Walsh | 59 | Head | Farmer | Illinois |
| 77 | Alice M. Walsh | 60 | Wife | — | Illinois |
| 78 | John Springman | 62 | Head | Farmer | Illinois |
| 79 | Robert Springman | 57 | Son | Farm Hand | Illinois |
| 80 | Fred Warburton | 42 | Head | Farmer | Illinois |
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)