Question: What castle owned by Sir Ernest Wills has been a base for Menzies Clan Chief David Steuart Menzies?
Context: Meggernie Castle is a castle in the heart of Perth and Kinross, in central Scotland.  It is located halfway up Glenlyon, where the river Lyon flows through on its way to join Loch Tay.  From the 1920s until the 1950s, the castle was owned by Sir Ernest Wills, 3rd Baronet. The 18th Legislative Assembly of Saskatchewan was elected in the Saskatchewan general election held in June 1975.  The assembly sat from November 12, 1975, to September 19, 1978.  The New Democratic Party (NDP) led by Allan Blakeney formed the government.  The Liberal Party led by David Steuart formed the official opposition.  Edward Malone replaced Steuart as party leader in 1976.  After the Progressive Conservative Party won two by-elections and convinced two Liberal members to defect in 1977, the Progressive Conservative Party led by Richard Lee Collver shared the role of official opposition with the Liberals. Sir Aulay MacAulay of Ardincaple (died 1617) was a Scottish laird, knight, clan chief, and a shire commissioner.  He was the son and heir of Walter MacAulay Ardincaple, who was the laird of Ardincaple and chief of Clan MacAulay.  The MacAulay estate of Ardincaple was situated in the location of the modern village of Rhu and Helensburgh, which both lie on the eastern shore of the Gare Loch, in Argyll and Bute.  As chief of his clan, he entered into a contract with the chief of the MacGregors, pledging service and assistance to their chief.  His clan feuded with the Buchanans, and his marriage to the widow of a deceased Galbraith chief brought forth feuding with that clan.  He also feuded with the Campbells, particularly the Captain of Carrick.  The Campbells made several attempts on his life and he was wounded one such encounter.  Towards the end of his life he was knighted for his services.  On his death he was succeeded by his first cousin. Castle Menzies in Scotland is the ancestral seat of the Clan Menzies and the Menzies Baronets.  It is located a little to the west of the small village of Weem, near Aberfeldy in the Highlands of Perthshire, close to the former site of Weem Castle, destroyed c. 1502.  The manager is David Henderson. Sir Lachlan Maclean, 1st Baronet of Morvern, (c. 1600 – 18 April 1649) the 17th Clan Chief of Clan Maclean.  Lachlan was granted his Baronet title by Charles I and he became the Clan Chief on the death of his brother in 1626.  He fought as a Royalist under James Graham, 1st Marquess of Montrose during the Wars of the Three Kingdoms at the Battle of Inverlochy, Battle of Auldearn and Battle of Kilsyth.  From 1628 to 1633 he sat in the Parliament of Scotland as shire commissioner for Tarbert.  From his rule onward, all Maclean clan chiefs are successive Baronets of Movern. The Menzies Baronetcy, of Castle Menzies in the County of Perth, was a title in the Baronetage of Nova Scotia.  It was created on 2 September 1665 for Alexander Menzies.  The title became extinct on the death of the eighth Baronet in 1910.  It was unsuccessfully claimed between 1914 and 1917 by David Prentice Menzies, of Plean Castle, Stirlingshire, who claimed to be the nearest lawful heir male of line of Captain James Menzies. The title Menzies of Culdares came to prominence following the extinction of the main Menzies of Weem line in 1911.  The Clan was without a Chief until Col. Ronald Steuart Menzies of Culdares and Arndilly, the lineal heir of Colonel James Menzies of Culdares, a prominent Covenanting officer and cousin of the first Baronet, petitioned Lyon Court in 1957 and obtained arms in the title of "The Menzies of Menzies".  His son, David Steuart Menzies of Menzies is the present Chief.  The title Menzies of Culdares was matriculated to his second son, Simon Menzies of Culdares, in 2006.  Meggernie Castle in Glen Lyon, Perthshire was the Seat of the Culdares line Clan Stewart (Gaelic: "Stiùbhart") is a Highland Scottish clan.  The clan is recognised by Court of the Lord Lyon; however, it does not have a clan chief recognised by the Lord Lyon King of Arms.  Because the clan has no chief it can be considered an armigerous clan; however, the Earls of Galloway are now considered to be the principal branch of this clan, and the crest and motto of The Earls of Galloway's arms are used in the Clan Stewart crest badge.  The Court of the Lord Lyon recognises two other 'Stewart' clans, Clan Stuart of Bute and Clan Stewart of Appin.  Clan Stuart of Bute is the only 'Stewart' clan at present which has a recognised chief. The Scottish Gaelic word "clann" means children.  In early times, and possibly even today, clan members believed themselves to descend from a common ancestor, the founder of the Scottish clan.  From its perceived founder a clan takes its name.  The clan chief is the representative of this founder and represents the clan as well.  In the Scottish clan system, the term chief denotes a greater chief than that of a chieftain.  In consequence, branch chiefs (heads of branches of a clan) are designated chieftains.  Scottish clans who no longer have a clan chief are referred to as armigerous clans. Clan Campbell of Cawdor is a highland Scottish clan and a branch of the larger Clan Campbell.  While the "clan" is recognised by the Standing Council of Scottish Chiefs, the clan does not have a "clan chief" recognised by the Standing Council of Scottish Chiefs.  Also, because the clan does not have a clan chief recognised by the Lord Lyon King of Arms it is considered an armigerous clan.  The head of the Clan Campbell of Cawdor is the Earl Cawdor.
Answer: Meggernie Castle