Possible Clues:

• Tristram's love
• Arthurian princess
• One playing lute's a lover
• Lover of Tristan ; ie, lust (anagram)
• Tryster with Tristan, in Camelot
• Tristan's love
• Tristan's love, in Camelot
• Tristram's lover
• Tristram's beloved
• King Mark's bride upped and left in Day One