P. Austin Nuttall, The Nuttall Encyclopædia
“ Clan, a tribe of blood relations descended from a common ancestor, ranged under a chief in direct descent from him, and having a common surname, as in the Highlands of Scotland; at bottom a military organisation for defensive and predatory purposes.Clan-na-Gael, a Fenian organisation founded at Philadelphia in 1870, to secure by violence the complete emancipation of Ireland from British control. ”
