 In the few surviving medieval Bulgarian royal charters, the monarchs of Bulgaria styled themselves as "In Christ the Lord Faithful Emperor and Autocrat of all Bulgarians" or similar variations, sometimes including “... and Romans, Greeks, or Vlachs".This list does not include the mythical Bulgar rulers and the rulers of Old Great Bulgaria listed in the Nominalia of the Bulgarian khans as well as unsuccessful claimants to the throne who are not generally listed among the Bulgarian monarchs.There is one living former Bulgarian Tsar