Hi James, The website www.rajasurakarta.com was written by some Malaysian recepients. They had Malaysianised the Javanese aristocratic titles to Malaysian equivalent of just 'Datos'. The known Javanese titles are like Kanjeng Radens or Kanjeng Pengirans, like the latest confered by Paku Buwono XIII on Prince Henry of Belgium, Kanjeng Pengiran Arya Adipati. And the recepients of these Javanese titles had to follow certain Javanese rituals and oath taking ceremony when the titles were confered on them. Rgds, Kanjeng Raden