The team was renamed Green Bay Packers in 1937 and so a need for a new emblem arrived. This logo also came into existence due to the team's original founder Curly Lambeau’s history with Notre Dame.

From the Packers' history section discussing the team's origins: Whatever the case, the (Green Bay) Press-Gazette in ... to be an identical "Power G" logo on their helmets to that of the Packers ...