[1] Cecrops was the son of Pandion I, king of Athens[2][3] and possibly the naiad Zeuxippe, and thus brother to Erechtheus, Butes, Procne, Philomela and Teuthras.
[4] In some accounts, his parents were identified to be King Erechtheus and the naiad Praxithea and thus he was brother to Pandorus, Metion,[5] Protogeneia, Pandora, Procris, Creusa, Orithyia and Chthonia.
[11] Cecrops married Metiadusa, daughter of Eupalamus (his brother[9] or a son of Metion[12]), by whom he became the father of his heir, Pandion II.
[13] After Poseidon having destroyed Erechtheus and his house during the war between Athens and Eleusis, Cecrops being the eldest of the dead king's children, succeeded to the throne.
[12] He was chosen by the appointed judge Xuthus, his brother-in-law, who was accordingly banished from the land by the rest of the sons of Erechtheus.