Walter Trail (died 1401; also spelled Trayl)[1] was a late 14th century Bishop of St. Andrews.
He appears as an official in the Bishopric of Glasgow in 1378, as a Magister Artium and a Licentiate in Canon and civil law.
In this year, Pope Clement VII (an "anti-Pope") granted him the deanery of the Bishopric of Dunkeld.
On 29 November 1385, the Pope provided him to the vacant Bishopric of St. Andrews, vacant because of the capture and death of the previous bishop-elect, Stephen de Pa. Walter Trail was an active bishop, and ardent defender of the rights of the church within Scotland.
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