Maester Steven, could the rival who assaulted Braavos during the Century of Blood have been the Men of Ib rather than the Tigers? (Volantis failed to break through Tyrosh & Pentos at sea, failed to secure Dagger Lake inland and was therefore far away – Ib was nearer, we know they have History of battling with Braavos for the Shivering Sea and we know that the last God-King of the Hairy Men fell sometime after The Doom; a defeat before the Titan might be a logical reason for his downfall).