Pepin I (also Peppin, Pipin, or Pippin) of Landen (c. 580 – 27 February 640), also called the Elder or the Old, was the Mayor of the palace of Austrasia under the Merovingian King Dagobert I from 623 to 629.
[1] In 613, several leading magnates of Austrasia and Burgundy abandoned Brunhilda, the great-grandmother and regent of their king, Sigebert II, and turned to Chlothar II of Neustria for support, promising not to rise in defense of the queen-regent and recognizing Chlothar as rightful regent and guardian of the young king.
On Dagobert's death, Pepin came out of retirement to take on the mayoralty in Austrasia for the heir Sigebert III[2] and to oversee the distribution of the treasury between Sigebert and his brother, Clovis II, and his stepmother Nanthild, who was ruling on Clovis' behalf in Neustria and Burgundy.
Sigebert's share of the inheritance was amicably surrendered, partly because of the friendship between Pepin and the Burgundian mayor of the palace, Aega.
Pepin and Arnulf's successor as chief counselor to the king, Cunibert, Bishop of Cologne, received the treasure at Compiègne and brought it back to Metz.