Ysaie the Sad

In a French romance, bearing his name, he is the son of Tristan (Tristram) and Iseult, whom a hermit had raised. In his adventures he was helped by a dwarf, Tronc, whom the fairies had given him. This dwarf later became the fairy king, Oberon.

Ysaie married Martha, the daughter of King Irion. Their son was called Marc.