The House of SepIch (a.k.a. House of SipIch) was a Klingon house headed by Torghn until his death. The house was then led by his son, Pok, son of Torghn. The opera Qul Tuq was based on the ancestors of this house. This ancient house conquered Taganika for the Klingon Empire. (ST novel: Klingon)