House of Crichton

Cadet Branches
House Crichton of Sanquhar
Lords of Sanquhar, Kirkpatrick and Ryhill
Lords Crichton of Sanquhar and Cumnock
Lords Sanquhar
Viscounts of Ayr
Earls of Dumfries
Issued from William, 2nd son of Thomas (Alexander) Crichton, Lord of Crichton
House Crichton of Cairns
Lords of Cairns and Strathord
Issued from Stephen, 2nd son of William Crichton, Lord of Crichton
House Crichton of Ruthven
Lords of Rutvhen and Kippendavie
Issued from James, 2nd son of Stephen Crichton, Lord of Cairns and younger brother of George Crichton, Earl of Caithness
House Crichton of Brunston
Lords of Brunston and Aghalane
Issued from Edward, 4th son of William Crichton, Lord of Crichton
House Crichton of Dromboory
Lords of Dromboory, Lisnaskea and Crom Castle
Barons Erne and Fermanagh
Viscounts and Earls Erne
Issued from Abraham, younger son of John Crichton of Brunston
Also known as Creighton or Creichton
Used undifferentiated ancient arms
Irish branch
House Crichton of Cranston Riddell
Lords of Cranston Riddell, Cluny and Naughton
Issued from David, younger son of James Crichton, 2nd Lord Crichton