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1.
sihd-hahr-tah-gau-tah-mah
sihd-hahr-thuh-gau-tah-mah (?)

The name of the very first Buddha.
"Hey, someone correct me about the second pronunciation of His name, ok? I would very much appreciate it. ^_^ "
-me

"The name 'Siddhartha' also means : 'one who attains his goals'. Cool huh? Inspires me to reach my goals in life. How 'bout you? ^_^ "
-me
by Dave March 25, 2004
 
2.
was the first teacher of Buddhism, he was a Noble man , from the 6th century B.C.E, also known as the first Awakened one or Buddha.
Eric: DUDE! did you know that the first Awakened One's name was Siddhartha Gautama?
Frank: no... dude, thats Amazing!
by K.T.C.O.L October 03, 2007