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.