Vivian Cerwyn

Vivian Cerwyn heads House Cerwyn and rules Castle Cerwyn. In the series she marries Cleos Umber, of House Umber.

Their union produces a daughter, Katrina, who takes her mother's surname rather than her father's, a sign that it is Vivian who retains the lordship of the Cerwyns. In the novels of A Song of Ice and Fire, the character of Vivian Cerwyn does not exist: she appears only in the television adaptation.