Suprabuddha, or Suppabuddha was the maternal uncle and father-in-law of the Buddha according to the Mahavamsa genealogy and the Theravada commentarial tradition. He was also known as Mahāsuppabuddha.

Mahāprajāpatī Gautamī or simply Prajāpatī was the foster-mother, step-mother and maternal aunt of the Buddha. In Buddhist tradition, she was the first woman to seek ordination for women, which she did