When he applied for ennoblement, he claimed that these two families were originally noble.
Patrilineality he descended from bailiff Christopher Giertssøn Morgenstierne (1619–79) who married Birgitta Ludvigsdatter Munthe (1634–1708).
Description: On a shield divided into two fields, whereof the upper is silver and the lower is red, in the 1st field two chopped and crossed brown tree stems under a ten-pointed golden star, and in the 2nd field three silver balls.
On the helm a noble coronet and up from this two bear paws holding three silver balls.
Media related to Munthe af Morgenstierne at Wikimedia Commons