Greensleeves Trilogy
Greensleeves Trilogy is a term refering to the cycle of three books telling story of Greensleeves and her brother Gull: Whispering Woods, Shattered Chains and Final Sacrifice.
Story within the books is connected to the first Magic book: Arena, so all together they are sometimes called "Garth/Greensleeves Cycle" or "Garth/Greensleeves Quadrilogy".