The Sempill Story
- 1246
Robert de Sempill witnesses a charter to Paisley Abbey[4]
- 1488
- c.1489
John Sempill is created Lord Sempill by James IV[3]
- 1504
John, Lord Sempill, founds the collegiate church at Lochwinnoch[7]
- 1513
John, 1st Lord Sempill, is killed at Flodden[3]
- 1547
Robert, 3rd Lord Sempill, is captured by the English at Pinkie[3]
- 1727
Lord Sempill sells Castle Semple estate to William MacDowall[8][6]
- c.1735
McDowall builds Castle Semple House, replacing the old house of Castleton[8][6]
- 1884
William Forbes of Craigievar succeeds as 17th Lord Sempill[5]
- 1995
James Sempill succeeds as the 21st and current Lord Sempill[5][1][2]






















Clan ForbesWilliam Forbes of Craigievar inherited the Lordship of Sempill in 1884, becoming Forbes-Sempill until 1995.
Clan MontgomeryWilliam, 2nd Lord Sempill, married Lady Margaret Montgomery, eldest daughter of Hugh, 1st Earl of Eglinton.
Clan CunninghamA Lord Sempill took part in the Montgomery-Cunningham feud with the Earls of Glencairn, which ran from 1488 to 1586.