King of Ninevah
The King of Ninevah was the King of Assyerian whom Jonah appealed to.
The Bible never mentions that Jonah has any family, however it's unknown if he indeed had no relatives.
|“|| Unknown: There's a man crying in the streets.
King of Ninevah: Give him a hankie and send him home. What do I care? I'm a king, not a babysitter.