future King Robert II of Scotland is known to have rented Bourtreehill to one Alan of Blair. Roger de Blair of that Ilk had the barony conferred on him by Robert the Bruce. In typical feudal manner, this payment took the form of the all too common Peppercorn rent. This was a valuable Barony, lying partly in the Parish of Irvine and partly in Dreghorn. 16th century Montgomery family papers preserved in the Scottish National Archives include a 1505 record of Bourtreehill, or some portion thereof, being owned by a family of Lynns who elsewhere are revealed as being Lords of Lynn in nearby Dalry, the location also of Lynn Glen and Lynn Falls. In 1556, Montgomery family papers reference "John Lyn of that Ilk and Lord of Bourtreehill." The Hunter family papers published by the Scottish Record Society include several 16th-17th century references to Bourtreehill in connection with the Lynns, describing the Lynns as "of that Ilk." Finally, mention of the Lynns in Bourtreehill can be found in a 1608 testament. A partial record of the Lynns of Bourtreehill is as follows: 13 Jan 1505 - Andrew Lyne received a charter from Robert Frances, Lord of Stane, for land in Bourtreehill, for which he was to pay to Frances the third part of a whole peppercorn on the feast of St. Martin in winter on the ground of the said lands in name of blench ferm if asked; and to the lords portioners of Peristoun seventeen bolls in measure of oats used and accustomed at two yearly ters St. Martin in winter and Whitsunday by equal portions upon the ground of the said lands. The land consisted of two merks with a half merk of the lands of old extent called Bourtreehill together with two parts of the common, including the three fields lying between the lands called Blakatbank and with a half part of the march lying between the lands of Stayne and the lands called Scottanrig lying in the lordship of Stayne, bailliary of Cunningham and shire of Ayr. The charter was executed in Irvine and is preserved in the papers of the Montgomery family, Earls of Eglinton. 7 Nov 1522 - Robert Hunter resigned lands of Highlees [Dundonald] to John Lyn of Boutrehill. 2 May 1528 - John Lyn of Bowrtrehill witnessed an instrument in Glasgow concerning the Montgomerys. 21 Jan 1548 - John Lyn of