By 1812 Cocks, who had already rejected the law as a profession and declined to follow his eldest brother Edward into the army, after accompanying him for part of the Peninsular campaign, had resolved to pursue a career in the church.
He vacated his seat early in 1823 and subsequently entered the church, as he had originally intended. By 1830 he had obtained three ecclesiastical appointments, the last of which may have been procured through his father’s influence with the duke of Wellington.
