Tory, as you know, comes from the Irish to pursue, and Whig comes from the Lowlands term '"Whiggamore
'", which in turn derived from '"whig-a-mare'", a dialect term for driving a horse forward.
And there are two slightly humorous, because perfunctory, entries in the glossary: the first being that for Whig, "a name originally given to Scottish Presbyterian rebels of the late 1640s," according to Smith, whereas the party name stems from the "Whiggamore
Raid" in west Scotland (covered in Grainger, p.
(abbr of whiggamore
, from Scot, whig, " to drive, " mere, "mare " ) (1) A name first derisively applied to raiding parties in western Scotland about 1648, then to Scottish Presbyterians.