Answer:
I'm the start of eternity and the end of space. There are two of me in heaven and one in hell.
A seasonal fashion statement named for the weather it's worn in.
Four kings of whom I am one lord. Often on deck but never on board. Though I have a large heart, I am always seen at war. During which I always wear a suit, but never a suit of armor. Who or what am I?
They are the shore's gallant knights.
You do this into someone's ear when you want to be discreet.
It rows quickly with four oars but never comes out from under his own roof. What is it?