R.M. Herwasto seventh child of Mangkunegara VIII, Founder and also the General Chairperson of the Soeryo Soemirat Dance Studio (1961–2012) Parents Mangkunegara VIII RA Sunituti Children Siblings Mangkunegara IX B.R.M. Susaktyo B.R.Aj. Retno Satuti G.R.Ayu Retno Astrini GRAY Ratna Rosilawati Kadarisman B.R.Aj. Retno Rosati B.R.M. Kumiyakto K.P.A. Prabu Kusumo