piatkow - 1:14 pm on Jul 30, 2013 (gmt 0)
@lucy24, the Spanish system sounds the same as the United Kingdon system. The rule is that the number is whichever is higher from the English or Scottish dynasties. Dual numbering was only used between James VI and I and Queen Anne. Sounds as if it would confuse the Dominions as well as the English.
Alexander I - 1107 to 1124
Alexander II - 1214 to 1249
Alexander III - 1249 to 1286