Robert Richard (Bob) Luther, age 81, of Clifton Forge, passed away Saturday, November 8, 2014, surrounded by his family at Roanoke Memorial Hospital following a sudden illness.He was born on December 10, 1932 in Johnstown, Pennsylvania and graduated from Richland High School. He served in the United States Army then received a B.S. degree in Mechanical Engineering from the University of Pittsburgh. He began his engineering career at Hercules, Inc., in Cumberland, Maryland where he met his wife of 51 years, Rita. He worked for Hercules for 35 years. He was Plant Engineer and finished his career as senior engineer in Research and Development. He was a very active member of St. Joseph Catholic Church in Clifton Forge. He thoroughly enjoyed spending time with family, being outdoors, reading, traveling, and riding his grandkids' bikes. He was a man of few words and high integrity.He was preceded in death by his parents, Clarence and Mildred Luther, sister-in-law Mary Ann Luther, and niece, Julie Ann Luther. He was also preceded in death by his wife’s siblings, Wilbur (Eleanor), Paul (Frances) and LaVerne (Charles).He is survived by his wife, Rita Ellen Luther, daughter Susan Trongard (Dean) of Minneapolis, MN, son Rick Luther (Angela) of Newark, DE, son Gary Luther (Dawn) of Roanoke, VA, daughter Ann Russell (Mike) of Roanoke, VA, and grandchildren, Patrick, Noah, Morgan, Ian, Drew, Scott, Kristen, Kara, Adam and Eli. He is also survived by brother Barry Luther (Lois), special aunt Ednamae Hockensmith, cousin Jane Milkie, brother-in-law Foster (Helen) and numerous nieces and nephews. Visitation will be Monday evening, Nov. 10 from 6 to 8 p.m. with a Christian Wake Service conducted at 7:00 p.m. at Nicely Funeral Home in Clifton Forge, VA. A Mass of Christian Burial will be held at 11 a.m. on Tuesday, Nov. 11 at St. Joseph Catholic Church in Clifton Forge with Father Tom Collins officiating, followed by a luncheon in the parish hall. Interment will be made on Tuesday at 4 p.m. in St. Andrew Catholic Cemetery, Roanoke, VA. In lieu of flowers the family requests that donations be made to the American Cancer Society, Alleghany Highlands Division, C/O Karen Buzzard, 807 McCormick Blvd, Clifton Forge, VA 24422 or St. Joseph Catholic Church, 620 Jefferson Ave., Clifton Forge, VA 24422.