Analysis of information sources in references of the Wikipedia article "Gautama Buddha in Hinduism" in English language version.
Since Kalki-p. 2.7.44 regards मायादेवी as the mother of the Buddhists (मातरं बौद्धाः) we may reasonably infer that Māyādevi is the name of Buddha's mother. Buddha himself declared that the name of his mother was Māyādevi (Mahāpadāna-suttānta). Buddhist tradition and the lexicons (Amarakośa 1.1.15) are in favour of this view.