No. Aaron was part of the Levites but Hur was not. They met later on in life.
Moses was a descendant of the tribe of Levi (Moses was a Levite).
No. King David was not from the tribe of Levi. He was from the tribe of Judah.
They most certainly do. Their descendants are called the Tribe of Levi and the Tribe of Joseph.
The priests came from the tribe of Levi with the Cohenim (High Priests) being the first born males of the Levim.
The Levi tribe was chosen to perform holy service in the Tabernacle and Temple. See related links for more information about the tribe of Levi.
Jeremiah was from the tribe of Levi.
Jeremiah was from the tribe of Levi.
Aaron belonged to the tribe of Levi.
Ezra was a descendant of the priestly tribe of Aaron from the tribe of Levi.
Eli was a Kohen, which is a family within the Tribe of Levi. He was also one of the Judges.
Jochebed's father was Levi, making her a member of the tribe of Levi in the Old Testament.
The Apostle Matthew, also known as Levi, was from the tribe of Levi. He was a tax collector before becoming one of the twelve disciples of Jesus.