The gemarah (Yerushalmi succa 5:1) and midrash (yalkut shimoni Yona, remez 550) indicate that the prophet Yona ben Amitai descended from Zevulun (father) and Asher (mother). However other sources indicate that he was the 'ben tzarfatit' that Eliyahu brought back to life and was in fact supposed to be Moshiach ben Yosef (see Pirkei D'Rebbi Eliezer 33, tosafos bava metzia 114a-b s.v. Mahu).
So, what exactly is the real lineage of Yona ben Amitai? Is he from Zevulun or from Yosef (Ephraim)?