Doctors of the Church.

I enjoyed this post on the Doctors of the Church, both for the content and for the creative use of text tools to convey information. It's hard not to mark a "dark age" between John Damascene and Peter Damian. Also interesting:

Some notable and influential theologians who very likely meet all the criteria but haven't yet received the designation: Gregory of Nyssa (whose absence is very noticeable), Epiphanius of Salamis, Jeanne de Chantal, Jean Eudes, Louis de Montfort, Bernardino of Siena, Veronica Giuliani, Birgitta of Sweden, Gertrude of Helfta, John Bosco, Lorenzo Giustiniani, Antonino of Florence, Thomas of Villanova, Ignatius of Loyola, Vincent de Paul.