The author of the enduringly popular Dragonriders of Pernseries died on Monday at her home outside of Dublin at 85, after suffering a stroke. Born in Cambridge Mass., she moved to Ireland in 1970 after the Irish government began a program to allow novelists to live there free of income tax. Her 23rd novel, Dragon’s Time, written with her son, was published in June. The next in the series, Sky Dragons, is set for publication next year. Her books are published by Ballantine/Random House and are available via OverDrive.