Background
His father was Romuald I. His mother was Theodrada (or Theuderata), daughter of Lupus of Friuli, and she exercised the regency for him for the first years of his reign.
His father was Romuald I. His mother was Theodrada (or Theuderata), daughter of Lupus of Friuli, and she exercised the regency for him for the first years of his reign.
Gisulf may have granted the monastery of San Vincenzo al Volturno a bloc of land 500 square kilometres in size around 700. In about 705, Gisulf took the cities of Sora, Arpino, and Arce. He marched as far as Horrea, plundering and burning, before he was confronted with gifts by the ambassadors of Pope John VI, who ransomed many of his captives and induced him to return whence he had come to his own dominions.
He fought against king, pope, and Byzantine.