In the British Empire, how did "knight" go from a military title, to an honor given to great artists?

by S_Jeru

Being named a "knight" is considered an honor in the UK. When did the British Crown stop granting it as a military honor, and start granting it as an artistic honor, and why?

Searocksandtrees

Hi, there's more room for detailed responses here, but meanwhile you can get started here