He lived in London for some years, where he endeavoured to effect reconciliation between the English Catholics and the government, but unsuccessfully. All he achieved was the enmity of the Old Pretender and his exiled Court. Notwithstanding his family's long record of loyalty to the Stuarts and the Church, they attacked him as an enemy of the Catholic faith. Strickland in return denounced the Pretender's bigotry.
Strickland was made bishop of Namur in 1727. He resided at Rome for some years as an agent of the English government, and was employed by the Holy Roman Emperor Charles VI, who had high personal regard for him, sent him in 1734 on a mission to England in connection with a vain attempt to create war with France.[1]
He died in Namur in 1740 and was buried in the Cathedral.