Fergus

Anglicized form of FEARGHAS.

FEARGHAS   male   Irish, Scottish, Irish Mythology
Means "man of vigour", derived from the Gaelic elements fear "man" and gus "vigour". This was the name of several characters in Irish legend including the Ulster hero Fearghas mac Róich.
EQUIVALENTS
IRISH MYTHOLOGY: Fearghas, Fergus
IRISH: Fearghas, Fergus
SCOTTISH: Fearghas, Fergus
DIMINUTIVES AND SHORT FORMS
SCOTTISH: Fergie