A Klingon house whose head, D'Ghor, tried to absorb the rival House of Kozak through underhand financial dealings and was cast out by the High Council when Quark exposed him.
The House of D'Ghor is a Klingon noble house seen in the Deep Space Nine episode The House of Quark. Its leader D'Ghor had long been a sworn enemy of Kozak, and when Kozak dies in an accident at Quark's bar he moves to claim the dead man's lands and titles.
Kozak's widow Grilka forces Quark into marriage to keep the house alive. Going through the accounts, Quark finds that D'Ghor has spent years quietly ruining Kozak's finances, a method of attack no honourable Klingon would use.
Brought before Gowron and the High Council, D'Ghor answers with a challenge to combat. Quark throws down his weapon, and when D'Ghor prepares to kill an unarmed man the Council turns its back on him. Star Trek: Discovery later shows a House D'Ghor among the great houses of the 2250s.