 In 883 Mac Auisle was killed by Otir (Ottár) the son of Iercne (i.e.Járnkné, who had been killed by the Dubgaill at Carlingford Lough in 852) and Muirgel the daughter of Máel Sechnaill I.The motive for this killing is unknown, but it suggests that there was an alliance by marriage between Máel Sechnaill and Járnkné.