What tribe was Aharon's (Aaron's) wife from?

Answer From The Annual Reading Schedule - Week 14 Notes For Exodus: Aharon's (Aaron's) wife is Elisheva (Elisheba) (Exodus 6:23). This reading does not give us the answer, but later in Numbers 1:7 we learn she was from Yehudah (Judah). This is further proof that tribal identification is through the Father only, not the Mother, because his sons were considered of the tribe of Lewi (Levi), not Yehudah in the Torah.