With a notable exception being addressing the sovereign (king/queen/tsar/etc) where the singular «you», «thou» and similar were used, in all languages. The sovereign was seen as a direct peer, the ultimate protector of the people and the last instance of appeal, and the connection was also perceived as deeply intimate.

The practice fell out of favour in England (I'm not sure when exactly but probably with the transition to the constitutional monarchy), although it lived on elsewhere in mainland Europe until the demise of all major monarchies.