Sawney
Sawney (sometimes Sandie/y, or Sanders, or Sannock) was an English nickname for a Scotsman, now obsolete, and playing much the same linguistic role that "Jock" does now. The name is a Lowland Scots diminutive of the favourite Scottish first name Alexander (also Alasdair in Scottish Gaelic form, anglicised into Alistair) from the last two syllables.