Pope Sergius I
Centwine was succeeded by another supposed distant relative, Cædwalla, who claimed descent from Ceawlin. Cædwalla reigned for just two years, but achieved a dramatic expansion of the kingdom's power, conquering the kingdoms of Sussex, Kent and the Isle of Wight, although Kent regained its independence almost immediately and Sussex followed some years later. His reign ended in 688 when he abdicated and went on pilgrimage to Rome where he was baptised by Pope Sergius I and died soon afterwards.