Be it known unto thee by these presence, even the presence of Lord Mortimer, that I am the besom that must sweep the court clean of such filth as thou art.
Wherefore be it known unto thee, O thou fountain of deceit, and be it also known to the foolish town of Mansoul, that I am not come against thee this day without my Father.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "known unto" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.