Who can tell me more on the heritage rules of royal titles in Indonesia ? My mother is a fourth generation descendant of "Entak", a Raden Ajoe or Raden Ayu (princess) from the Royal Court of the region of Solo, on the island Java in Indonesia. Entak was married to Ramsey Horrocks, a British industrial, who settled in Indonesia during the times of Raffles (circa 1811-1818, when Indonesia was occupied by the British and not the Dutch). Is my mother entitled to call herself an Indonesian princess ? If so, how can this be made official ?