Sassenach (n.) Look up Sassenach at Dictionary.com
Gaelic for "English person," 1771, Sassenaugh, literally "Saxon," from Gaelic Sasunnach, from Latin Saxones, from a Germanic source (such as Old English Seaxe "the Saxons;" see Saxon). The modern form of the word was established c.1814 by Sir Walter Scott, from Scottish Sasunnoch, Irish Sasanach, Welsh Seisnig.