Snakes in clover, picked and scotched

• snakes were legendarily driven out of Ireland (clover) by Saint Patrick
• in clover: in a condition of prosperity; happy and contented.
• "We have scotch'd the snake, not killed it": Shakespeare, Macbeth II xiiil * scotch: to cut or score
• pick: to grasp and pull with the fingers or fingernails.
• Picts and Scots: rival Celtic groups in ancient Scotland
• Scotch: a river in Canada
• Pick: a river in Alaska, USA
• Clover: a river in ireland
• Snake: a river in the Northwest USA