No.
Some famous priests of the old testament were Aaron and Eli.
Ruth
No, they were one family from the tribe of the Levites.
Leviticus derived from the Tribe of Levi.
There isn't an Old Testament name by the spelling E-l-e-y, but there was an Eli (see 1 Samuel).
Phinehas' mother is not named in the Bible.
By the sons names.
Yes, the Old Testament priests were members of the tribe of Levi. The Levites were chosen by God to serve as priests and carry out religious duties for the Israelites in the tabernacle and later in the temple.
Yes; of the tribe of Levi.
The tribe of Levi, his bloodline is depicted in the Old Testament in the book of Exodus
Jochebed's father was Levi, making her a member of the tribe of Levi in the Old Testament.