John Porterfield
John Porterfield was a Scottish prelate in the sixteenth-century. A mysterious figure, he emerges in 1571 as the successor to James [Beaton II] as Archbishop of Glasgow. He was described by Robert Keith as "a kind of titular bishop", propped up by the establishment for nominal purposes during a period of disorder. Porterfield probably held on to the archbishopric into 1572, but he disappeared from the records thereafter. In late 1573, James [Boyd of Trochrig] became new Archbishop of Glasgow. Porterfield is possibly the John Porterfield, minister of Ayr, who died in 1604 to be succeeded by John [Welsh of Ayr|John Welsh].