1CH 24:4

4 And there were more Rashei HaGevarim found of the Bnei El'azar than of the Bnei Itamar, and thus were they divided. Among the Bnei El'azar there were sixteen Rashim l'Bais Avot, and eight among the Bnei Itamar according to the Bais of their Avot.