Ferguson

The Ferguson surname comes from the Irish Gaelic Ó Fearghuis or Ó Fearghasa, meaning "descendant of Fearghus," a Gaelic personal name composed of the elements "fear," meaning "man," and "gus," thought to mean "vigor," or "force." Fearghus was the name of an early Irish mythological King of Ulster, a valiant warrior said to have been shipwrecked off the coast of Northern Ireland c. AD 320, at the place known as Carrickfergus ("rock of Fergus").