The Buddha's given name, or first name. His surname was Gautama.
Copyright: Dictionary source: Buddhism Glossary
English to English translation of Siddhartha Siddhartha (Sanskrit) [from siddha attained from the verbal root sidh to accomplish, attain, succeed + artha object, aim] One who has attained or accomplished his object, one who has fulfilled the object of his coming on earth; a name given to Gautama Buddha. See also BUDDHA-SIDDHARTHA