Robert Konrad Heisserer, 37, of Indiapolis, IN passed away on Monday, October 28, 2013 at while in Calgary, Alberta Canada on a business trip. Robert was born in Cape Girardeau, MO, on August 12, 1976 to Karl Michael and Barbara Diane Curtis Heisserer, the oldest of six sons. He married Sandra Hartmann on June 30, 2001 in Cincinnati, OH and she survives. He was a graduate of Cathedral High School in Indianapolis, obtained a B.A. in English from Xavier University in Cincinnati, OH and a Master's in Education from Marion College in Indianapolis. He was employed by Engineered Air out of Calgary, Canada and was the Indiana Territory Sales Manager. Survivors include his wife, Sandra; his parents, Barbara and Karl Heisserer; his brothers Joseph (Jenny), Eric (Bobbi), Michael (Ashley) and James Heisserer of all Indianapolis, IN; paternal grandparents, Ralph and Mary Louise Heisserer of Oran, MO; a sister in law Sue(Scott) Barbee of Cincinnati, OH; eleven nephews and nieces, numerous aunts, uncles, cousins and friends. He was preceded in death by a brother, Curtis Lee Heisserer and his maternal grandparents, Clyde and Rosa Curtis of Oran, MO. Funeral mass was held at St. Lawrence Catholic Church in Indianapolis on Saturday November 9, 2013 with burial at Our Lady of Peace Cemetery in Indianapolis, IN.