An Etymological Dictionary of the German Language/Annotated/Rodomontade
Rodomontade, feminine, ‘boasting, bluster, swaggering,’ from the equivalent French rodomontade, Italian rodomondata, feminine Rodomonte is derived from Ariosto's Orlando Furioso, and is the name of a boastful Moorish hero; it first appears in Boiardo's Orlando Innamorata, and means literally ‘roller of mountains, one who boasts that he can roll away mountains.’