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William Hayes — 1940 US Census Record
Model Tree available1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this William Hayes across the 1920, 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed), with identified parents Iona & E — first a daughter (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Hayes |
| Given Name | William |
| Relationship to Head | Daughter |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur City |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 266 |
| Highest Grade | No |
| 1935 Residence | Same H |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Office Clerk |
| Township / Ward | Decatur City |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Lawrence Hayes | Daughter | — | 24 | ~1916 |
| William Hayes | Daughter | — | 21 | ~1919 |
| Mary Hayes | Daughter | — | 22 | ~1918 |
| Camilla Hayes | Daughter | — | 19 | ~1921 |
| Leo Hayes | Head | — | 50 | ~1890 |
| E Hayes | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Macon, Illinois
Son, age 1
Macon, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Macon, Illinois
Son, age 11
Macon, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | William J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Daughter, age 21
Macon-County, Illinois · implied b. ~1919 — 6 household members
| Surname | Hayes |
| Given Name | William |
| Relationship to Head | Daughter |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur City |
| 1935 Residence (County) | Macon |
| Occupation | Office Clerk |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 266 |
| Highest Grade | No |
| 1935 Residence | Same H |
| 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 Hayes across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Iona Hayes (~0.92 confidence) and mother E Hayes (~0.92 confidence) and father Geo Hayes (~0.92 confidence) and father Leo Hayes (~0.92 confidence) and mother Irene Hayes (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Iona Hayes
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
E Hayes
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
Geo Hayes
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Leo Hayes
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Irene Hayes
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Hayes
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Lawrence Hayes
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Hayes
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Camilla Hayes
Sibling · 1940 · age 19
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 — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00843-00415)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence Johnson | 42 | Head | Janitress | Illinois |
| 2 | Carl Johnson | 19 | Son | Truck Driver | Illinois |
| 3 | Helen Johnson | 17 | Daughter | Part Time | Illinois |
| 4 | Morris Johnson | 13 | Son | — | Illinois |
| 5 | Edna Lang | 41 | Head | Asst Secretary | Illinois |
| 6 | Charles Lang | 21 | Son | Clerk | Illinois |
| 7 | William Wendel | 73 | Head | — | Illinois |
| 8 | Cora Wendel | 65 | Wife | — | Illinois |
| 9 | Loyd Watt | 39 | Head | Staff Artist | Illinois |
| 10 | Helen Watt | 38 | Wife | — | Illinois |
| 11 | Duane Watt | 14 | Son | — | Michigan |
| 12 | Richard Watt | 11 | Son | — | Michigan |
| 13 | David Watt | 7 | Son | — | Indiana |
| 14 | Mary Mueller | 78 | Aunt | Seamstress | Germany |
| 15 | Martin Dooley | 49 | Head | Asst Supt | Ohio |
| 16 | Magdalen Dooley | 43 | Wife | — | Illinois |
| 17 | Robert D Dooley | 18 | Son | Part Time Usher | Illinois |
| 18 | John W Dooley | 16 | Son | New Work | Illinois |
| 19 | Truman Lowry | 22 | Head | Truck Driver | Illinois |
| 20 | Lillie Lowry | 19 | Wife | — | Illinois |
| 21 | Walter Loerger | 32 | Head | Foreman | Kansas |
| 22 | Elsa Loerger | 31 | Wife | — | Kansas |
| 23 | Ray Loerger | 6 | Daughter | — | Texas |
| 24 | Mathias Loerger | 3 | Son | — | Texas |
| 25 | John J Guelis | 43 | Head | Foreman | Illinois |
| 26 | Leona Guelis | 31 | Wife | — | Illinois |
| 27 | Betty J Baldwin | 13 | Daughter | — | Illinois |
| 28 | William Father Guelis | 85 | Father | — | England |
| 29 | Leo Hayes | 50 | Head | District Director | Illinois |
| 30 | E. Irene Hayes | 54 | Wife | — | Illinois |
| 31 | Lawrence Hayes | 24 | Daughter | — | Illinois |
| 32 | Mary E Hayes | 22 | Daughter | — | Illinois |
| 33 | William Hayes THIS PERSON | 21 | Daughter | Office Clerk | Illinois |
| 34 | Camilla J Hayes | 19 | Daughter | Office Work | Illinois |
| 35 | James Simms | 35 | Head | Salesman | Missouri |
| 36 | Elizabeth Simms | 35 | Wife | — | Ill. |
| 37 | Mary Mcguire | 57 | Mother-in-law | Clerk | Ill. |
| 38 | Phillip Mcguire | 24 | Brother-in-law | Laborer | Ill. |
| 39 | Robert A Freeman | 34 | Head | Mechanic | Illinois |
| 40 | Gertie Freeman | 31 | Wife | — | Illinois |
Pedigree Summary
William + 3 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)