as bold as Beauchamp

Brave. The phrase might refer to the 1346 feat of Thomas Beauchamp, who defeated 100 Normans with very little military support. Wow, you really ran into a burning building and saved all those people? You're as bold as Beauchamp! Those explorers were as bold as Beauchamp to venture out into the wilds of Antarctica. As bold as Beauchamp, the sailor leapt from the ship with his sword in his teeth and pounced on the pirate captain.