Lincoln allowed Douglass into the white because he said “here comes my friends Douglass”.
Oenone was Paris' lover, whom he left to marry Helen.
Achilles, I suppose, would be the "star" of the Iliad
Pallas is a common epithet of Athena.
Laertes was the father of Odysseus
Orestes was the son of Agamemnon and Clytemnestra
Eris was the goddess of discord
Nestor was, among other things, a survivor of the Trojan War.
They change shape due to a number of reasons.
The easiest reason to understand why they change is that they erode.
The coasts around the the world erode due to waves hitting cliffs, the wind batting against the coasts etc. Over a long period of time we can see that they change in shape.
(sorry I don't know why they move)