Garibald was the young son of Grimoald I of Benevento, king of the Lombards, and Theodota, daughter of Aripert I. After his father's death in 671, he reigned briefly for three months until the numerous adherents of Perctarit, his uncle, who had been exiled by Grimoald nine years earlier, beseeched their candidate to return and elected him, deposing the young king.