The woman claims Nick Carter raped her in separate instances onboard a yacht and a boat in Florida, and sexually assaulted her on a bus when she was 15 years old.
The Pulitzer Prize-winning novelist was also known for such works as "The Road," "Blood Meridian" and "All the Pretty Horses," many of which were adapted by Hollywood.
A native of Orillia, Ont., Lightfoot topped music charts with classic songs including "If You Could Read My Mind" and "Sundown" and his career spanned decades.