House Lothston

House Lothston is an extinct noble house of the Riverlands. Their sigil was a black bat on a field divided bendwise, silver and gold.

Their seat was the castle of Harrenhal, which was granted to them after the extinction of House Strong. However, the Lothstons also died out, like all the Houses to hold Harrenhal, and the castle was passed on to House Whent.

One of the members of House Lothston is the stuff of tales. Lady Danelle Lothston, also known as "Mad Lady Lothston", who was said to send a giant bat to capture children for her cookpots, to bathe in blood, and serve feasts of human flesh.

In the books
In the A Song of Ice and Fire novels, House Lothston's backstory is the same. They are considered an ill-omened house, and their sigil is reviled in several places.