The 1950s Captain America was known for a time as Captain America IV. In later years, yet earlier Captain Americas were introduced, obscuring their numbering, though most of these other, later-introduced Captains are not formally part of the recognized lineage (such as the Revolutionary War-era ancestor of Steve Rogers). Many recognize this character today with the specific terms 1950s Captain America, Captain America of the 1950s, or "Grand Director" to distinguish him from the World War II Steve Rogers. In 2010 the character's birth name ("William Burnside") was revealed in "Captain America" #602.