What English author is known for a long series of novels that first started in 1971 and ended in 2015, where a portion of the novels focus on witches?
Witches (Discworld): A major subset of the "Discworld" novels of Terry Pratchett involves the witches of Lancre. Terry Pratchett:  His final Discworld novel, "The Shepherd's Crown", was published in August 2015, five months after his death.
i don't know