Allen Thomas Dwan, age 73, of Plano, Texas, passed away March 11, 2015 at Baylor Heart Hospital in Plano, Texas. Allen was born December 2, 1941 to Robert Dwan and Betty Dwan Hamillton of Chicago Illinois. He was preceded in death by his parents and older brother, Earl Dwan and his in-laws: Ed and Nancy Sereda of Plano, Texas. Allen is survived by his wife and best friend, Susan Sereda Dwan of Plano, Texas; his daughters: Kelly Isaacson (Tom Isaacson) of New Orleans, Louisiana and Kim Dwan-Collins (Lionel Barrymore Collins II) of Chicago, Illinois; his two grandsons: Joshua and Colin Isaacson of New Orleans; his sisters and brother, all of Chicago, Illinois: Mary Kay and Dennis Boss, Michael and Nan Hamilton, Beth Hamilton, and Kelly Anne