He quickly took up his position as the most powerful lord in the Glasgow area and was later instrumental in the marriage of his elder son, Lord Darnley, to Queen Mary.
Brzo je preuzeo položaj najutjecajnijega lorda u području Glasgowa, te je kasnije postao ključnim sudionikom u sklapanju ženidbe između njegova starijeg sina, Lorda Darnleya, s kraljicom Marijom.