Analysis of information sources in references of the Wikipedia article "Brian Boru" in English language version.
Brian initiated a stunning new undertaking in 988. Again his eyes were on opponents to the north, and again he used his geographical advantage to the full by launching onto the River Shannon at Lough Derg—from his very doorstep—an expeditionary river-fleet of some three hundred vessels, including the Norse fleet of Waterford, and directing their course northwards to Lough Ree.
A squadron of Brian's 300-strong river-fleet were sent into Connacht after harrying Mide. In an encounter with the defending Connachtmen they killed one of Connacht's princes, Muirgius son of Conchobar; but it was otherwise disastrous for Brian's fleet, whose crews were massacred.
But Brian came away from Bleanphottogue with an agreement that saw him as the equal to his former lord.
Brian initiated a stunning new undertaking in 988. Again his eyes were on opponents to the north, and again he used his geographical advantage to the full by launching onto the River Shannon at Lough Derg—from his very doorstep—an expeditionary river-fleet of some three hundred vessels, including the Norse fleet of Waterford, and directing their course northwards to Lough Ree.
A squadron of Brian's 300-strong river-fleet were sent into Connacht after harrying Mide. In an encounter with the defending Connachtmen they killed one of Connacht's princes, Muirgius son of Conchobar; but it was otherwise disastrous for Brian's fleet, whose crews were massacred.
But Brian came away from Bleanphottogue with an agreement that saw him as the equal to his former lord.
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