Knapp, Justin "Jay", of St. Charles, Missouri, died on Friday, December 28, 2012 at the age of 87. Loving husband of Betty Knapp (nee: O'Driscoll); beloved son of the late Newton and Anna Knapp; devoted father of Mary Sue (Bubba) Norman, Peggy (Steve) Shockley, Carol (Jim) Walker, Patrick (Alice) Knapp, John (Gail) Knapp, and Julia (Michael) Beaudoin; cherished grandfather of Jamie, Brendan, Keith, Jesse, Emily, Ashley, Jake, Colleen, Ben, Eva, Joe, Sarah, Ian, Katie, and Louis; dear brother of Jayne Losey, Marianne Simpson, and Virginia Maier; dear brother-in-law of Marney Knapp and Lynn Knapp. He is preceded in death by his brothers Robert, Richard and Harry. Memorials may be made to Respect Life Apostolate of St. Cletus or Missouri Veterans Association.