 He witnessed 24 royal charters and 40 non-royal charters, including charters issued by David, Earl of Huntingdon (the brother of King William), Donnchadh, Earl of Carrick, and Alan Fitzwalter, High Steward of Scotland.Jocelin had been with King William when he visited the English court in 1186, and again accompanied the king to England when the king travelled to Woodstock near Oxford to marry Ermengarde de Beaumont on 5 September 1186.The marriage was blessed by Bishop Jocelin in their chamber, and it was to Jocelin's escort that King William entrusted her for the journey to Scotland.