Second issue of Anguistus (a preceding infant died in childhood). Born in 289, proclaimed emperor by the Moot in 365, died in an air/raft accident in 456 at the age of 167, having outlived his only issue. In memory of this deceased son, the title Martin IV was never used by an emperor.
It fell to Martin III to crush the Ilelish Revolt (418 to 435) and its challenge to Imperial authority.