Anyone with the last name of Farrell is a descendant of King O'Fearghail. O'Farrell is defined as descendant of King O'Fearghail. Farrell is the American version of the very Irish name. It is also defined as man of valor (a badass in combat). However, not all Farrells come from a military background.
They love their beer and liquor, especially when it comes to whiskey. Typically on the tall end of things, including the women, and have a propensity to be physically active, although athleticism is usually not the case.
Person 1: I'm Farrell
Person 2: Does that mean you like booze?
Person 1: Duh