Washington [US], September 27 (ANI): Stepmother of pop icon Madonna, Joan Clare Ciccone, has died at the age of 81 after a brief struggle with “very aggressive cancer.” Joan passed away on September 24, according to an online obituary obtained by People magazine. Joan married Madonna’s father, Silvio Ciccone, in 1966. In the obituary, family and friends expressed their deep sorrow, stating, “She will be terribly missed by her family and friends whose lives she enriched with her enthusiasm, joy, and love.” Joan became a part of Madonna’s life when the singer was just eight years old. Madonna’s …