Possible Clues:

• Ancient Greek biographer
• Early Greek biographer of "Parallel Lives"
• Greek biographer
• 'Livin' la Vida ___'
• Greek biographer whose work influenced Shakespeare
• Greek biographer and philosopher, author of 'Parallel Lives'
• Classical biographer
• Greek biographer noted for his 'Parallel Lives' of distinguished Greeks and Romans
• Biographer of Greek god, endlessly cunning
• Cartoon dog without tail trailed by cunning philosopher