Related Clues:

• Greek letter; cross
• Greek character is endlessly tense
• Father, friend of the Pope?
• 19th letter of Greek alphabet
• -- cross, St. Anthony�s cross
• Greek t
• Like religious leader twice every year going on line
• T on a frat tee
• Relative of 6-Across
• Head of the Greek Titans?
• Kind of tiara and cross
• Foreign character that's tight, taking time off
• Terpsichore's start
• Franciscan cross
• Two before 53-Across