Criston He is a character from the House of the Dragon series, he is a member of House Cole, a minor House of the Dornish Marches in service to House Dondarrion. His father is the steward at Blackhaven. Criston is of Dornish descent. He is logical, practical, and exceptionally dedicated. Loyal and reliable, he’s the kind of person you can count on to show up when he says he will, He is respectful of rules and values organizations where there is a clear hierarchy.