In short - all languages evolved through centuries, but perhaps none as much as English. The language people spoke on The Islands was shaped by people who “visited” them. And by visited I mean invaded. First wave brought Jutes, Angles and Saxons who brought Germanic influences. Combine them, and you get Old English. Then the Vikings came, later Normans, this time bringing French influences, and word by word, the language was shaped into what we can read in, for example, Shakespeare. This is the first point when we could go back in time and, without many difficulties, understand the language.
And thanks for writing!
(And here is a more detailed look)
what do you mean did I just google medieval nail clipping
“Take the timber thereof [rosemary] and burn it to coals and make powder thereof and put it into a linen cloth and rub thy teeth therewith, and if there be any worms therein, it shall slay them and keep thy teeth from all evils.”