Source: Davidson, John, Rev., Inverurie and The Earldom of the Garioch: A Topographical and Historical Account of the Garioch from Earliest times to the Revolution Settlement; A. Brown & Co., Aberdeen 1878. Page 440-42.

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The last of the Constables, Norino, was succeeded in his family estates before 1282, by Norman de Leslie, the first who adopted the name Leslie, one of the unfortunate magnates who had to succumb to Edward's pretensions to be Overlord of Scotland. He is said by Sir Robert Douglas to have married Elizabeth Leith of Edingerack, the first name that appears of that long-descended Garioch family. In 1282, Alexander III. gave Norman de Leslie a gift of the lands of Fythkill, now called Leslie, in Fife.

Page 40
In 1296…At Aberdeen, he swore fealty to the English monarch, along with Sir Norman de Lesselyn…on which sad occasion Sir Norman appears jointly with other magnates agreeing to renounce the old Scottish league with France.