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From Rodovid EN

Lineage	Hamengku Buwono VI
Sex	Female
Full name (at birth)	Raden Roro Ratna Mardiani [Hb.6.18.6.1.8.1]
Parents ♂ Raden Mas Marsidi [Hb.6.18.6.1.8] [Hamengku Buwono VI]

From grandparents to grandchildren