Possible Clues:

• Margaret's successor as secretary of education
• Thomas --, English composer noted for 'Rule Britannia'
• "Artaxerxes" composer
• Composer arranged odd pieces
• Composer of "Rule, Britannia"
• Barack's secretary of education
• "Alfred" composer, 1740
• Architect Jacobsen
• В“Rule, Britannia" composer
• Minnesota pol Carlson