Mushi was the grandson of Levi (Jacob's son) and the son of Merari.
Exodus 6:16These are the names of the sons of Levi according to their generations: Gershon, Kohath, and Merari. And the years of the life of Levi were 137 years.Exodus 6:17The sons of Gershon by their families were Libni and Shimei.Exodus 6:18The sons of Kohath were Amram, Izhar, Hebron, and Uzziel. And the years of the life of Kohath were 133 years.Exodus 6:19The sons of Merari were Mahli and Mushi. These are the families of Levi according to their generations.
Their descendants formed a single clan.
1 Chronicles 23:23The sons of Mushi: Mahli, Eder, and Jeremoth—three.
Numbers 26:58These are the Levite clans: the Libnite clan, the Hebronite clan, the Mahlite clan, the Mushite clan, the Korahite clan.