Leonidas of Athens

Leonidas became bishop of Athens as successor to Kodratos.

Leonidas was buried in Athens on a former island of the river Ilisos, above the tomb in the 5th century the Ilisos Basilica was built, consecrated to him at the time, whose foundations have been preserved.

Leonidas is also referred to as a martyr due to an equation with Leonidas; after his martyrdom, his remains, together with those of his companions, were transferred to Athens in the Ilisos Basilica in the 5th century.

Joachim Schäfer: Article Leonidas of Athens, from the Ecumenical Dictionary of Saints – https://www.heiligenlexikon.de/BiographienL/Leonides_von_Athen.html