Waltham Mr. John W. Bill Kelly, of Waltham, died Wednesday, September 19, 2007 at his home. He was 81. He was the husband of the late Barbara A. (Mulcahy) Kelly. Born in Waltham on March 20, 1926, a son of the late James V. and Marguerite A. (Nickerson) Kelly, Bill was a lifelong resident. Until his retirement, he worked as a diesel mechanic for the Massachusetts Turnpike Authority and before that held the same position at the Atlantic Richfield Company (ARCO). He had been an active member of the Knights of Columbus in Newton. Bill found his greatest joy spending time with his family, especially his twelve grandchildren. He leaves his children, John W. Kelly and his wife, Jeanne, of Falmouth, James D. Kelly and his wife, Alice, of Waltham, Kevin M. Kelly of Pittsfield and Kathleen A. Vaughan and her husband, John, of Arlington; his grandchildren, John, Tim, Christopher and Elizabeth Kelly, Jodi Landry, Jennifer, Katie, Sean, Jacqueline and Andrew Kelly, Michael and Matthew Vaughan; his great-grandchildren, Sean and Madeline Kelly and Michaela Landry; one brother, James Richard Kelly and his wife, Frances, of Geneseo, New York; one sister, Marilyn F. Patty McDaniel of Falmouth and many nieces and nephews. He was also a brother of the late Phillip C. Kelly. Relatives and friends are invited to attend the Funeral at 9:30 a.m. Monday from The Joyce Funeral Home, 245 Main Street (Rte. 20), Waltham followed by a Funeral Mass in Saint Jude Church, 147 Main Street, Waltham at 10:30 a.m. Committal services will be held at Calvary Cemetery Chapel, Waltham. Visiting hours are Sunday from 2 to 5 p.m. Memorial donations may be made to the Multiple Sclerosis Society, 101A First Avenue, Suite 6, Waltham, MA 02451.