Grimoald II was the duke of Benevento from 677 to his death. He was the son and successor of Romuald I of Benevento

Romuald I of Benevento

Romuald I , duke of Benevento was the son of Grimoald, king of the Lombards. He received Benevento when his father usurped the throne in 662. Grimoald sent the deposed king Perctarit's wife Rodelinde and son Cunincpert to the court of his son in Benevento.Romuald betrothed his sister Gisa to...

. He was possibly under the regency of his mother, Theodrada, daughter of Lupus of Friuli

Lupus of Friuli

Lupus was the Duke of Friuli from between 660 and 663 to his death around 666.Immediately after succeeded to Friuli, Lupus invaded Grado with a body of cavalry and plundered the city, then proceeding to Aquileia, where he stole the treasures of the Patriarchate.When King Grimoald went south to...

. His reign of three years was uneventful: Paul the Deacon

Paul the Deacon

Paul the Deacon , also known as Paulus Diaconus, Warnefred, Barnefridus and Cassinensis, , was a Benedictine monk and historian of the Lombards.-Life:...

 records nothing but his marriage and death. He is said to have been an opponent of the crown http://www.genealogie-mittelalter.de/langobarden_fuersten_von_benevent_capua_salerno/grimoald_2_herzog_von_benevent_+_681.html. He was succeeded by his brother Gisulf

Gisulf I of Benevento

Gisulf I was the duke of Benevento from 680, when his brother Grimoald died. His father was Romuald I. His mother was Theodrada , daughter of Lupus of Friuli, and she exercised the regency for him for the first years of his reign....

. He was married to Wigilinda, daughter of King Perctarit

Perctarit

Perctarit was king of the Lombards from 661 to 662 the first time and later from 671 to 688. He was the son and successor of Aripert I. He shared power with his brother Godepert. He was a Catholic, Godepert an Arian. He ruled from Milan, Godepert from Pavia...

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Sources

• Paul the Deacon
  Paul the Deacon
  Paul the Deacon , also known as Paulus Diaconus, Warnefred, Barnefridus and Cassinensis, , was a Benedictine monk and historian of the Lombards.-Life:...
  
  . Historia Langobardorum. Available at Northvegr.