Mark Anthony Kennedy, 18, of Williston, North Dakota passed away December 29, 2017 at his residence in Williston, North Dakota. Mark was born June 12, 1999 in Hoffman Estates, Illinois to Gerald and Susan Kennedy. Mark is preceded in death by his mother, Susan Smith. Left behind to treasure his memory is his father and step-mother, Gerald and Tammy Kennedy; his siblings, Danielle Kennedy, Jessica Kennedy, Amanda Kennedy and by his twin, David Kennedy; grandparents, Cleo Smith and Katherine Atkinson.