Seven Saints

Nave, Basilica di San Giulio
(on the Isle of San Giulio, Piedmont, Italy)

Except for Catherine's, all the saints' names are given next to their haloes, and they are also identifiable by their attributes:

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More of Saints Cosmas and Damian
More of St. Sebastian
More of St. Roch
More of St. James the Greater
More of St. Catherine
More of St. Blaise

Source: Wolfgang Sauber via Wikimedia Commons

Source of dating: Italian Wikipedia, s.v. "Basilica di San Giulio"