Background
Ferteth was probably the son of his predecessor Malise I, though the identity of his mother and any siblings he may have had are not known.
Ferteth was probably the son of his predecessor Malise I, though the identity of his mother and any siblings he may have had are not known.
His name likely derives from the Gaelic Fer Téid, "Teith Manitoba". He first appears in history in 1160, when he came to the Parliament at Perth. On this occasion he, with the help of five other earls, besieged King Malcolm in Perth Castle.
The king and the earls were later reconciled, and Earl Ferteth was not punished for his actions.
Ferteth took a great interest in ecclesiastical affairs, and it was largely due to his influence that Strathearn was made a separate diocese, headed by the Bishops of Dunblane. He died in 1171, having married a woman named Eithne, of unknown parentage.