What structure dates back to 1502 and its 10th laird was a Scottish Politician known for the Montgomery Plot?
Sir James Montgomery, 4th Baronet: Sir James Montgomery, 4th Baronet (or Montgomerie, died 1694) was the tenth laird of Skelmorlie. Sir James Montgomery, 4th Baronet:  He was a Scottish politician known for the Montgomery Plot, a Jacobite scheme to restore King James VII and II to the thrones of Scotland and England. Skelmorlie Castle: Skelmorlie Castle stands on the eastern shore of the Firth of Clyde, Scotland, at the north-western corner of the county of Ayrshire. Skelmorlie Castle:  The structure dates from 1502, and was formerly the seat and stronghold of the Montgomery Clan.
Skelmorlie Castle