(Madam Rosmerta, Rosmerta) The barmaid at The Three Broomsticks.

Madam Rosmerta (fl. 1950 -1997) was a British witch who was the landlady of the Three Broomsticks pub in the village of Hogsmeade. Rosmerta was put under the Imperius Curse, cast by Draco Malfoy in 1997. After being placed under the curse, she helped Malfoy against her will to smuggle cursed items into Hogwarts Castle. It is likely she later redeemed herself by fighting in the Battle of Hogwarts.