Possible Clues:

• Origin of this wild flower? Harris?
• Maybe thistle, after time, becomes flower of Scotland
• Salmon fishing river rising in the Scottish Borders and flowing into the North Sea at Berwick in Northumberland
• Tammany Hall name
• Tammany Hall 'boss'
• Former New York boss
• Fabric made from wool
• Fabric with the same name as a Scottish river
• Quaint little daughter in woollen material
• Thick woollen cloth - northern river