I would like to know the origins of "Mc" or "Mac" in names.
Did they come from a previous language?
They come from Gaelic, Irish or Scottish, and they still exist. Gaelic is a living language in Ireland and Scotland, Mc. is an abbreviated form of Mac, which is, in it's turn, an anglicisation of a Gaelic word. The meaning is 'descendant of'. My name, Dove, is an anglicisation of Mag Colm, colm being the Gaelic word for dove (the bird).