Titus Groan in particular Lord Sepulchrave's twin sisters, Cora and Clarice Groan. The sisters are not very bright and are power-hungry and resentful, believing that Countess Gertrude holds the position that they rightfully deserve. Steerpike manages to use the twins' ambition for his own ends. He promises them power and influence, and convinces them that they could achieve their goal by burning down Sepulchrave's beloved library. Steerpike prepares meticulously for the act of arson. He arranges for the burning to happen when the entire Groan family and their most important servants are inside the library for a family gathering (Steerpike intentionally failed
Gormenghast (castle) to school. Occupied by the same family for five hundred years, Knole's sprawling layout and varied architecture, added to and modified by successive generations, bear comparison with Gormenghast. (Some of the descriptions of Knole by Vita Sackville-West are also remarkably similar to passages by Peake.) Its massive walls evoke the great Norman castles and keeps of medieval Europe, such as the walled city of Carcassonne (pictured), Rochester Castle in England or Caernarfon Castle in Wales; while the ancient walled Chinese cities of Beijing and Tientsin where Mervyn Peake spent his childhood are a major influence. Another Chinese source may be