Suprabuddha (Sanskrit), or Suppabuddha (Pali) was the maternal uncle and father-in-law of the Buddha according to the Mahavamsa genealogy and the Theravada commentarial tradition.

[1] Western scholars note that the pattern of cross-cousin marriage described in the Mahavamsa genealogy is typical of historical marriage practices in Dravidian societies in Southern India, but not typically associated with Northeast India and the Ganges Basin of the historical Buddha.

[2] According to the Mahāyāna Abhiniṣkramaṇa Sūtra (佛本行集經), Suprabuddha was a wealthy Shākyan who lived in Devadaha.

[citation needed] According to the Theravada commentaries, One day, the path leading to the Supreme Buddha and the monks was blocked by King and company.

He fell down the stairs and was swallowed by the earth, sharing the same eventual fate as his son, Devadatta.