Harold was born September 2, 1928, the fifth of eight kids to Helen and Leo Gannon of Spence Iowa. The love and strength of family ties remained a focus throughout his life. He became a Navy Hospital Corpsman and a 1954 graduate of The University of Iowa college of Dentistry.
Dr Gannon moved to Castle Rock, Colorado to start his Dental Practice. This is where he married the wife of his children and created many happy memories. He was active with in the community with the Chamber and School Board as well as real estate development.
Harold is preceded in death by his first wife Mary Lou Gannon, his son Dr Robert Gannon his second wife Pat Mihalovich and all his siblings.
Harold is survived by his Daughter-in-law Toni Gannon, daughter Susan Fisk, Son-in Law James Fisk, Grandsons Dr John Gannon and wife Dr Sarah Stilwil, Mike Fisk, Tim Gannon and wife Christina Gannon, Tom Gannon and Great Grandchildren William, Jack and Angelina Gannon.
He lived a full long life and was quoted saying he had been lucky! The people he called family and friends were the lucky ones! He was generous with his family and enjoyed his success with his friends.
