1. Although the idea of the coronation goes back much further, the first such ceremony of which significant detail is known is that of King Edgar in 973. In which city did it take place?
From Quiz Anointed and Crowned - The Coronation
Answer:
Bath
Edgar became King of the English (the title generally used by Anglo-Saxon Kings of England) in 959 following the death of his elder brother, Eadwig. Although there is no record of any kind of coronation at the start of his reign, some historians believe that there must have been one in order to cement his royal authority. However, the evidence of the Anglo-Saxon Chronicle suggests that Edgar in fact did not have a coronation at the beginning of his reign, instead waiting until he reached the age of around 30 to have a full coronation. This occurred in 973, at a time in his reign that Edgar had achieved considerable success, to the point of being proclaimed as overlord over the whole of the island of Great Britain.
The coronation of 973 took place at Bath Abbey, of which Edgar had been a patron since his accession. The ceremony was extensively covered in the Anglo-Saxon Chronicle, which provides much of the evidence of what took place, including a number of elements that remain recognisable to the present. Following his coronation in Bath, Edgar sailed to Chester to hold a council, where a number of other kings, as a symbol of their fealty, rowed Edgar across the River Dee, accepting him as their overlord.