The angel Ambriel is a heavenly prince belonging to the order of Thrones. He rules over the month of May, and is also the chief officer of the twelth hour of the night. He presides over the sign of Gemini.
The angelic name Amriel was inscribed on an oriental Hebrew charm and is intended to protect against evil. The Sixth and Seventh Books of Moses claim Amriel is a spirit invoked under the seventh seal of Mars.