What name is given to a group of 13 loaves or buns?

In 1290, King Edward I expelled all Jews from which nation? In 1297, Francois Grimaldi, disguised as a monk, seized the fortress of which future principality? What time is it 13 half-hours after 6:30 p.m.? Which word for a long journey, especially on foot, shares its Latin root with the name of the peregrine falcon? Thirteen items, as a bread seller traditionally counts them, make up what? What name is traditionally given to a group of 13 witches? In 1997, 13-year-old Rebecca Sealfon won which contest by correctly spelling "euonym"? About 1,300 invited guests attend a banquet in Stockholm City Hall's Blue Hall after the awarding of which honors?