What does Cēphēis mean in Latin?

Cēphēis, a proper noun, means “daughter of Cepheus, especially Andromeda”.

What is the genitive of Cēphēis?

The genitive singular is Cēphēidis. Cēphēis is feminine, third declension.

proper noun · femininethird declension

Cēphēis f sg (genitive Cēphēidis)

Cēphēïs, ĭdis, v. Cepheus, II. C.

What does Cēphēis mean in Latin?: Cēphēis, a proper noun, means “daughter of Cepheus, especially Andromeda”.
What is the genitive of Cēphēis?: The genitive singular is Cēphēidis. Cēphēis is feminine, third declension.