Is it George I? He was the first Hanoverian and only acceded because of the terms of the act of settlement, and spent a lot of time in Germany. Did he die there too?
You are right, sir. George I is the third answer. The small catch is that, in addition to being King over here, he was Elector of Hanover. However, he did not die in either Britain or Hanover, the territories that he ruled, but in Osnabruck, which was a Prince-Bishopric that did not become part of Hanover until 1803. George had appointed the existing ruler of Osnabruck as the Elector of Hanover appointed every other one, but did not rule it; at the time Osnabruck was ruled by his brother, the Duke of Albany.
So that is one each to Mcr Warrior, Calthrop and SteveM70. Here is a tie breaker if you want to decide between you:
Edward VIII was one of three kings in 1936. Give one of the other two years that were ‘Years of Three Kings’.