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From Rodovid EN

Lineage	Hamengku Buwono VI
Sex	Male
Full name (at birth)	Raden Ariyo Wiseso Margono [Hb.6.18.10.4.1.1]
Parents ♂ Raden Mas Wigianto [Hb.6.18.10.4.1] [Hamengku Buwono VI]

From grandparents to grandchildren