He employed the proceeds of his English property in purchasing and improving an estate at Omagh, County Tyrone, in a Catholic area. In the same year he was made receiver-general for the crown of all revenues from the estates of the city of London in his diocese, forfeited through non-fulfilment of conditions of the holding. In 1639 he protected and recommended to Wentworth John Corbet, minister at Bonhill, who had been deposed by the Dumbarton presbytery for refusing to subscribe the assembly's declaration against prelacy. Wentworth used Corbet as a sarcastic writer against the Scottish covenanters, and nominated him to the vicarage of Templemore, in the diocese of Achonry. Archibald Adair, bishop of Killala and Achonry, a Puritan, was tried as a favourer of the Scottish covenant over his views on Corbet. Adair was deposed on 18 May 1640; these proceedings alienated the Scottish settlers. The Irish commons in October 1640 drew up a remonstrance, in the course of which they speak of the Derry plantation as 'almost destroyed' through the policy of which Bramhall was the administrator.