Erdine G. (Maddock) McPherson, age 80, died Saturday, March 15, 2014, at Emeritus Senior Living in Tewksbury after a lengthy illness. Born in Somerville, September 30, 1933, she was the daughter of the late Warren and Lillian (Ellsmore) Maddock. Prior to her retirement, Erdine was employed for 16 years with BASF Systems Corporation in Bedford. She is survived by her two daughters and sons-in-law, Linda Glassheim and her husband, Robert, of Okinawa, Japan and Cheryl Ann Green and her husband, Robert, of Billerica. She also leaves her four loving grandchildren, Sean, Daniel, and Sarah Green and Mathew Voukidas. She was the sister of the late George Maddock.