Mark V. Duggan, 56, of Littleton, Colorado, passed away unexpectedly on July 8, 2014. He was a Colorado native that enjoyed the outdoors, hiking, biking and going to baseball games. He was passionate about his family, friends and spiritual life. Preceded in death by his mother Judy (Nichols). He is survived by his wife of 30 years, Deborah; daughters Sarah and Brooke; his father Lawrence; and sisters Carol and Amy. A visitation will be held Monday, July 14, from 5:30 - 7:00 PM at the Horan & McConaty Family Chapel, 5303 E. County Line Rd., Centennial 80122. A Rosary with a reception to follow will follow the visitation in the Chapel beginning at 7:00 PM. A Funeral Mass with a reception to follow will be held Tuesday, July 15, 10:30 AM at the St. Mary Catholic Church, 6853 S. Prince St., Littleton 80120. Please share your memories of Mark and condolences with his family by signing the guestbook below.