Related Clues:

• He was Rose Kennedy's youngest
• "Ideas worth spreading" conference
• The 'I' of 'How I Met Your Mother'
• The fourth Greek letter
• The familiar Senator Kennedy
• River mouth in the Greek alphabet
• Greek letter at the mouth of the river
• The familiar American Senator Kennedy
• Triangular river mouth
• Fourth letter of Greek alphabet
• Triangular land at mouth of river
• Edward, in short
• Father ..., Dermot Morgan's TV creation
• Triangular patch of land at mouth of river
• TV comedy series 'Father . . .'