\Guelph\, Guelf \Guelf\ (gw[e^]lf), n. [It. Guelfo, from
Welf, the name of a German family.] (Hist.)
One of a faction in Germany and Italy, in the 12th and 13th
centuries, which supported the House of Guelph and the pope,
and opposed the Ghibellines, or faction of the German
emperors.