Mark Albert Illian, age 63, of Coralville died unexpectedly from natural causes at home on June 16, 2019.Mark was born Sept. 9, 1955 in Davenport, Iowa. He was the son of Melvin C. Illian who resides in Walcott and Joan Klever Illian who preceded him in death. He is survived by 3 siblings: Li...