The name Rooney is a boy's name of Irish origin meaning "descendent of the champion". Rooney and is often added to lists like Cool Boys’ Names—Rare, Unique and Unusual and discussed in our forums with posts like "Extended Family Congrats Round 5 (dice game)".
From the experts:
Rooney is one of many bouncy Irish surnames that could make an agreeable first, once tied to Mickey Rooney (who was actually born Joseph Yule) in his young and spunky Andy Hardy period.
Young "Girl with the Dragon Tattoo" actress Rooney Mara (born Patricia Rooney) gives it class and glamour--as well as bringing it into the unisex category. Roone is a cool short form.