These friends knew it not; and they were offended by what they considered Sakyamuni's failure, and the course he was now pursuing.

See the account of their conversion in M.B., p.

186.
(9) This is the only instance in Fa-Hsien's text where the Bodhisattva or Buddha is called by the surname "Gotama." For the most part our traveller uses Buddha as a proper name, though it properly means "The Enlightened." He uses also the combinations "Sakya Buddha,"="The Buddha of the Sakya tribe," and "Sakyamuni,"="The Sakya sage." This last is the most common designation of the Buddha in China, and to my mind best combines the characteristics of a descriptive and a proper name.

Among other Buddhistic peoples "Gotama" and "Gotama Buddha" are the more frequent designations.

It is not easy to account for the rise of the surname Gotama in the Sakya family, as Oldenberg acknowledges.
He says that "the Sakyas, in accordance with the custom of Indian noble families, had borrowed it from one of the ancient Vedic bard families." Dr.Davids ("Buddhism," p.