The best known find from this time is the Lewis chessmen, which date from the mid 12th century. Scots rule As the Norse era drew to a close the Norse-speaking princes were gradually replaced by Gaelic-speaking clan chiefs including the MacLeods of Lewis and Harris, the MacDonalds of the Uists and MacNeil of Barra. This transition did little to relieve the islands of internecine strife although by the early 14th century the MacDonald Lords of the Isles, based on Islay, were in theory these chiefs' feudal superiors and managed to exert some control. The growing threat that Clan Donald posed to the Scottish crown led to the forcible dissolution of the Lordship of the Isles by James IV in 1493, but although the king had the power to subdue the organised military might of the Hebrides, he and his immediate successors lacked the will or ability to provide an alternative form of governance. The House of Stuart's attempts to control the Outer Hebrides were then at first desultory and little more than punitive expeditions. In 1506 the Earl of Huntly besieged and captured Stornoway Castle using cannon. In 1540 James V himself conducted a royal tour, forcing the clan chiefs to accompany him. There followed a period of peace, but all too soon the clans were at loggerheads again. In 1598 King James VI authorised some "Gentleman Adventurers" from Fife to civilise the "most barbarous Isle of Lewis". Initially successful, the colonists were driven out by local forces commanded by Murdoch and Neil MacLeod, who based their forces on in . The colonists tried again in 1605 with the same result but a third attempt in 1607 was more successful, and in due course Stornoway became a Burgh of Barony. By this time Lewis was held by the Mackenzies of Kintail, (later the Earls of Seaforth), who pursued a more enlightened approach, investing in fishing in particular. The historian W. C. MacKenzie was moved to write: The Seaforth's royalist inclinations led to Lewis becoming garrisoned during the Wars of the Three Kingdoms by Cromwell's troops, who destroyed the old castle in Stornoway and in 1645 Lewismen fought on the royalist side at the Battle of Auldearn. A new era of Hebridean involvement in the affairs of the wider world was about to commence. British era With the implementation of the Treaty of Union in 1707 the Hebrides became part of