“And Aaron tooke him Elisheba daughter of Amminadab sister of Naashon to wife, and she bare him Nadab and Abihu, Eleazar and Ithamar.”
1611 King James Version (KJV)
6:23 Aminadab - A prince of the tribe of Judah. The Levites might marry into any tribe, there being no danger of confusion or loss of inheritance thereby.