Walter was a witness to a charter that granted the mainland properties of Iona Abbey, then under the rule of the Lord of the Isles, to the Monks of Holyrood Abbey.
[1] He was elected to the bishopric of Dunkeld in 1178 after the death of the previous bishop, Richard.
However, Walter did not live long enough to receive consecration, and in fact he too met his death in the year 1178.
Walter was the son of Halenald de Bidun, a landowner and minor lord in England.
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