 Complete the following phrase:  Ludwig Gaston was born at Ebenthal castle in Austria-Hungary, the youngest son of Prince Ludwig August of Saxe-Coburg and Gotha and Princess Leopoldina of Brazil, the second daughter of Dom Pedro II. His siblings were Princes Peter August, August Leopold and Joseph Ferdid. Shortly after their mothers death in 1871, Ludwig and his brothers moved to Brazil, where they lived with their maternal grandfather until a 