This is from the Illinois, Deaths and Stillbirths Index, 1916-1947. Her father is listed as John Jefferson. Maybe he was William John or John William.

Name: Maud Dee Eley [Maud Dee Jefferson]
Birth Date: 6 May 1871
Birth Place: Matropolis, Ill
Death Date: 31 Jul 1946
Death Place: E St Louis City, St Clair Co, Illinois
Burial Date: 2 Aug 1946
Burial Place: Belleville, St Clair Co, Ill
Cemetery Name: Mt Hope
Death Age: 75
Occupation: Housewife
Race: White
Marital Status: M
Gender: Female
Residence: East St Louis, St Clair Co, Illinois
Father Name: John Jefferson
Mother Name: Julia Mitchell
Spouse Name: John F. Eley
FHL Film Number: 1991312