Dorothea Jordan was an Irish actress, courtesan, and the mistress and companion of the future King William IV of the United Kingdom, for 20 years while he was Duke of Clarence. Together they had ten illegitimate children, all of whom took the surname 'FitzClarence'. Wikipedia*
On the C-SPAN Networks:
Dorothy Bland has one video in the C-SPAN Video Library; the first appearance was a 1989 Forum.