There are as many theories about who King Arthur was, as there are historians. Some of those theories hold real promise, while others seem to be about legends and possibly tourist dollars.
Welsh tradition lays claim to Arthur as their fellow countryman. Scotland also claims Arthur as their own, and the Round Table as an acutal place near Bannockburn. Where the truth lies is perhaps only to be found within the hearts and minds of those who still seek after this fabled King.
Each of these ideas, as well as the numerous reasons each author and place has a claim to Arthur is worth examining in full. Perhaps the only way we can ever know the truth, is when tourist attractions cease to be the default home of King Arthur, and archeologists are willing to begin a search that is based on real evidence that has been examined and either proven or disproven.