When addressing correspondence to Charles ninth Earl Spencer how is title addressed?

Answer 1

Whilst in correspondence Charles Edward Maurice Spencer,DL, 9th Earl Spencer, 9th Viscount Althorp, 9th Viscount Spencer, 9th Baron Spencer you should address the envelope to "The Right Honourable The Earl Spencer" and start your letter with "Dear Lord Spencer".

Answer 2

In addressing correspondence to Charles ninth Earl Spencer, the correct salutation would be "Dear Lord Spencer" or "Dear Earl Spencer".