The Acts of the Council of Chalcedon record that in 451 AD a certain Acacius was Bishop of Malta (''Melitenus Episcopus''). It is also known that in 501 AD, a certain Constantinus, ''Episcopus Melitenensis'', was present at the Fifth Ecumenical Council. In 588 AD, Pope Gregory I deposed Tucillus, ''Miletinae civitatis episcopus'' and the clergy and people of Malta elected his successor Trajan in 599 AD. The last recorded Bishop of Malta before the invasion of the islands was a Greek named Manas, who was subsequently incarcerated at Palermo.