SAMURAI..
Samurai (侍, Samurai?) is the term for the military nobility of pre-industrial Japan. According to translator William Scott Wilson: "In Chinese, the character 侍 was originally a verb meaning to wait upon or accompany a person in the upper ranks of society, and this is also true of the original term in Japanese, saburau. In both countries the terms were nominalized to mean "those who serve in close attendance to the nobility," the pronunciation in Japanese changing to saburai." According to Wilson, an early reference to the word Samurai appears in the Kokinshu, the first imperial anthology of poems, completed in the first part of the tenth century. By the end of the 12th century, saburai became synonymous with bushi (武士) almost entirely and the word was closely associated with the middle and upper echelons of the warrior class.

SAMURAI NAMES..

A samurai was usually named by combining one kanji from his father or grandfather and one new kanji. Samurai normally used only a small part of their total name.
For example, the full name of Oda Nobunaga would be "Oda Kazusanosuke Saburo Nobunaga" (織田上総介三郎信長), in which "Oda" is a clan or family name, "Kazusanosuke" is a title of vice-governor of Kazusa province, "Saburo" is a name before genpuku, a coming of age ceremony, and "Nobunaga" is an adult name. Samurai were able to choose their own last names.