Is Apollo related to eos

Yea; as Eos is the daughter of Hyperiôn and Theia, children of Gaea and Ouranos.

Apollo is the son of Zeus, whose parents were Kronos and Rhea, siblings of the above and children of Gaea and Ouranos.

The mother of Apollo and Artemis is Leto and daughter of Phoibê and KoiOS; who are also siblings of Hyperiôn and Theia, Kronos and Rhea; and so children of Gaea and Ouranos.