Carew fought an effective campaign against the Butlers, but their influence overwhelmed his efforts. Not content to pursue the acquisition of Irish lands by right of inheritance, he extended his ambitions with a scheme for plantation. In April 1569, the privy council at London approved in principle a proposal by him, along with Sir Warham St Leger, Sir Humphrey Gilbert and Sir Richard Grenville, for a corporate settlement by confiscation of lands at Baltimore on the coast of the province of Munster (see Plantations of Ireland) to be accomplished via legal proceedings for the purpose of exposing defective titles, expelling rebels and introducing English colonists. Carew's legal adviser, John Hooker, had by then become a prominent New English member (for Athenry) in the Irish Parliament in Dublin.