Vailliant, Walter M. ''Mike-Stuff'' of Watertown formerely of Cambridge, suddenly, August 31, 2003. Beloved husband of Karen (Caporiccio). Devoted father of Stephen M. Vailliant of Taunton. Brother of Wilfred ''Jessie'' Valliant of Cambridge, George Vailliant of Cambridge, Annie Silva of Billerica and the late John Vailliant. Grandfather of Dylan J. Vailliant. Also survived by many nieces and newphews. Funeral from The Faggas Funeral Home on Wednesday at 8am followed by a Funeral Mass in The Blessed Sacrament Church, Pearl Street, Cambridge at 9am. In lieu of flowers donations in his memory may be made to the American Heart Association, 20 Speen Street, Framingham, MA 01701-4688. Calling hours will be on Tuesday, September 2 from 4 to 8pm.