mists of time

[ycris2003]

I'm translating something here about mists of time and i think is about remote days in our past?

[Anglika]

Probably. One might well say that "The truth about Henry VIII's actions are lost in the mists of time".

The full context would help to be sure.

[David L.]

'mists of time' refers to how the passage of time (before now) has blurred one's perceptions or memory of the event.

So - 'lost in the mists of time' means that so much time has elapsed since the event, that it is not only beyond human memory, but there are no recorded details about the event.
Who first used some form of wick soaking in oil as a means of light? Today, we have paraffin lamps, and a step further, candles...but who/which nation invented this is lost in the mists of time.