Eugenius II of Toledo
Eugenius II (sometimes Eugenius I or Eugene; died 647) was Archbishop of Toledo from 636 to 646. He became successor in 636 of Justus in that metropolitan see. Like his predecessor he had been a disciple of Helladius in the monastery of Agali. He is famous as an astronomer and astronomical mathematician.
As a bishop he was virtuous and intelligent. At this period, under the Visigothic Kingdom, the councils of Toledo were national diets convoked by the monarch, attended by lay lords; they regulated, to some extent, not only spiritual but temporal affairs.
Of these councils Eugenius presided at the Fifth Council of Toledo, convoked in 636 by King Chintila to confirm his elevation to the throne; he assisted at the sixth, convoked by the same king to take precautions against the disorders of royal elections.