The original letters-patent having been declared void, the Parliament of England in 1609 under James I passed a Private Act of Parliament entitled "An Act for assuring and establishing the Isle of Man in the name and blood of William, Earl of Derby" [(1609) 7 Jac.1 c."4"] which established the title in law as "Lord of Mann". The lordship was conferred by letters-patent dated 7 July 1609 upon William Stanley, 6th Earl of Derby. Subsequent succession was under the terms of this grant.