The "Calendar Writs of Munro of Foulis" are series of contemporary legal documents concerning the Munro of Foulis family from the year 1299 to 1823 that were published in books by the Scottish Record Society in the 1940s. One of these documents is a letter dated 1572 from Andrew Munro of Milntown to the Regent of Scotland complaining that Colin Mackenzie of Kintail had ""slew thre servandis of myne and left thre deidlie woundit brunt and distroyit my cornis hous and barnis in the channorie..."". The letter from Munro of Milntown goes on to say that ""the nowmer of thre thowsand men"" (three thousand men), ""asseigit the said hous be a lang space fortefeit"" (laid siege to the said house that had been a long time fortified) and that ""quhill at last thei seing the hous onrecoverabill"" (at last they seeing the house unrecoverable) ""be thair force efter thai haid committit greit harshippis upoun the Laird of Foulis and his kin"" (their force after had committed great hardships upon the Laird of Foulis). Munro of Milntown also stated in his letter that the castle ""was present in the handis of Walter Urquhard shereff of Cromertie"" (at present in the hands of Walter Urquhart, Sheriff of Cromartie). Another letter, dated 8 July 1572, from a Richard Mader who was acting as a messenger, endorses an assurance to the king from the Munros and Mackenzies. It also mentions that the Mackenzies along with the Mackintoshes had laid siege to the Chanonry with three thousand men: ""McKenze and Mcanetoische wes with thair haill hoistis to the nummer of thre thousand men or therby lying at the sege of the castell of the channory"".