1CH 24:6

6 And Shema'yah ben Netan'el the Sofer, one of the Levi'im, wrote them before HaMelech, and the Sarim, and Tzadok HaKohen, and Achimelech ben Evyatar [(Abiathar)], and before the Rashei HaAvot of the Kohanim and Levi'im, Bais Avechad being chosen for El'azar, and one chosen for Itamar.