The House of Qwentyn was one of the largest banking and investment cartel in the Republic of Siddarmark.

Lord Protector Greyghor Stohnar was member of the house's board of directors. Its head in the late 9th Century of God was Tymahn Qwentyn. (BSRA)

Nynian Rychtair established a number of holdings in the Republic through the House of Quentyn, using the name "Aivah Pahrsahn". Her accounts were overseen by Owain Qwentyn. (HFAF)