Possible Clues:

• Storytelling slave
• Romulus' relative
• Royal birds for a city founder
• US relative who did accounts for partner in City foundation
• Tale-telling ''Uncle''
• Avuncular sort of narrator
• Legendary twin birds grounded after first shot of rifleman
• City founder - 'uncle' storyteller
• Famous twin's puzzle bishop abandoned for mass
• One responsible for capital ancient region raised