What is recorded here

Castle Semple is a ruined peel tower on a rocky islet in Castle Semple Loch, Renfrewshire, built by the Semple family before 1560 as an impregnable retreat during the Scottish Reformation. Robert, 3rd Lord Semple named it Defender of the Faith while opposing Protestant reform, strengthening it against Glencairn’s siege rather than answering charges of murder and theft. Drainage and farming later joined the islet to the shore with a curved earthen embankment, turning a dangerous water fortress into a quiet ruin where ornate carved stones still hint at the comfort the Semples kept inside its defences.

Scotland's National Record of the Historic Environment records Castle Semple as Ditch (period Unassigned). The official map says its point is accurate as follows: NGR given to the nearest 10m. The record does not by itself mean that the public may enter the place.

Built by the Semple family in the 13th century, Castle Semple is remembered as a historically significant Scottish castle associated with the Clan Sempill and the Wars of Scottish Independence.

The historic-place record does not grant public access. Check current conditions and ownership before entering land or a building.