| The Peel of Castle Semple | |
|---|---|
| Castle Semple Loch, Renfrewshire, Scotland grid reference NS 3617 5876 | |
  The Peel of Castle Semple | |
| Coordinates | 55°52′51″N 4°39′51″W / 55.880943°N 4.6640600°W |
| Site information | |
| Owner | Private |
| Open to the public | No |
| Condition | A ruin |
| Site history | |
| Built | 17th century |
| Built by | Semple family |
| In use | 17th century |
| Materials | Stone |
The ruins of The Peel of Castle Semple[1] or the Castle Semple Loch Peel Tower, once designated in Scottish Reformation times as the Defender of the Faith[2] lie in Castle Semple Loch, Parish of Lochwinnoch, Renfrewshire, Scotland. The castle stands on a rocky islet which due to drainage works and farming activities has now become linked to the shoreline through a curved earthen embankment. Semple is sometimes written as 'Sempill'; however, for consistency the more commonly found spelling will be used here.