David P. Bickford, age 71, died, Thursday, December 11, 2008, at Lahey Clinic in Burlington, unexpectedly. He was the beloved husband of Marjorie A. (Sipos) Bickford. He was born in Everett, May 8, 1937 the son of Phyllis (Ragucci) Sico of Everett and the late Winston Bickford. A resident of Billerica for over 30 years, David worked at the Kmart Mall in Billerica. David was well known in the store for his different titles. He enjoyed being the store greeter, working at the register or stock room, and playing Santa Claus at Christmas. He was a devoted and dedicated employee who loved working at the store. He made many friends in the town from his work. He also loved being a grandfather to his grandchildren. Besides his wife and mother he is survived by his two daughters and sons-in-law, Kelly and Gregory Gardner and Nicole and Timothy Thomas, both of Billerica, his brother, Robert Bickford of Everett, his four loving grandchildren, Derek and Brennah Gardner and James and Leland David Thomas. He was also survived by many aunts, uncles, cousins, nieces and nephews.