Sarafid Kardoness is a title within the Sarafid Dowd'i Kingdom which translates as two things, "governor" and "heir to the throne".
There can be several Sarafid Kardoness's at any one time depending on how many children the Sarafid Shah has, but the title is reserved for those old enough to have taken command of certain aspects of the Kingdom, from military to religious to civilian.
By 329AE both Xee Xar and Blu Tia have earned their titles as governing Sor Lois and Polonkip respectively.