The Book of Ash series by Mary Gentle consists of 4 books, published between 1999 and 2000. The series begins with A Secret History.
The Ilario series by Mary Gentle consists of 2 books, starting in 2007. The series begins with The Lion's Eye.
The Orthe series by Mary Gentle consists of 3 books, published between 1983 and 2002. The series begins with Golden Witchbreed.
The White Crow Sequence series by Mary Gentle consists of 3 books, published between 1990 and 1994. The series begins with Rats and Gargoyles.