In many myths, Zeus's children are Ares, Athena, Aphrodite, Hecate, Hestia, Dionysis, Chiron, and more. They have more kids than I can count. Actually Chiron his father is Kronos so Chiron so,...
Your first cousin's grandchildren (her children's children) are your first cousins, twice removed.Your second cousin's grandchildren are your second cousins, twice removed.
Your children and your first cousin's children are second cousins to each other.Your children and your second cousin's children are third cousins to each other.