Related Clues:

• Ruler by heredity
• Queen, e.g
• Ruler
• Member of a hereditary ruling family
• Ruler shows extremes of devilry, unpleasant no end
• Extremely deadly and mostly unpleasant, as Ivan the Terrible was
• Ruler returning prohibits any dissent? Not entirely
• King who succeeds his father, say
• Stand by for dancing bishop having come out as family member
• Kim Jong-un, for one
• Some 'daddy', nasty sort of ruler
• Day to depose a not entirely horrible ruler
• Ancestral ruler
• Ruler already nasty, to an extent
• Ruler rejects any dubious packages from the East