Stauffenberg's full name was Claus Philipp Maria Justinian, followed by the noble title of "Count of Stauffenberg". He was born in the Stauffenberg Castle Jettingen between Ulm and Augsburg, in the eastern part of Swabia, at that time in the Kingdom of Bavaria, part of the German Empire. Stauffenberg was the third of four sons, including the twins Berthold and Alexander and his own twin brother Konrad Maria, who died in Jettingen one day after birth on 16 November 1907. His father was Alfred Schenk Graf von Stauffenberg, the last of the Kingdom of Württemberg. Stauffenberg's mother was Caroline Schenk Gräfin von Stauffenberg, née Gräfin von Üxküll-Gyllenband, the daughter of Alfred Richard August Graf von Üxküll-Gyllenband and Valerie Gräfin von