A Dharma name is a new name acquired during both lay and monastic Buddhist initiation rituals in Mahayana Buddhism and monastic ordination in Theravada Buddhism (where it is more proper to call it Dhamma or Sangha name). The name is traditionally given by a Buddhist monastic, and is given to newly ordained monks, nuns and laity. Dharma names are considered aspirational, not descriptive.
Most of the well-known Buddhist teachers are known to have had many different Dharma names in the course of their careers, and often each name represents a stage of their career. For example, Prince Shotoku was also known as Prince Umayado and Prince Kamitsumiya. Shinran's original name was Matsuwakamaru; he was also known as Hanen, Shakku, Zenshin, Gutoku Shinran and Kenshin Daeshi. Nichiren's original name was Zennichi and his Dharma names were Zenshobo Rencho and Rissho Daishi. Similarly, the tradition of various Dharma names was also used by Zen monks, who also used art to promote Buddhism. The famous monk-painter Hokusai was also known as Shunro, Kako, Sori, Taito, Iitsu, Gakyojin and Manji. Even the famous samurai Miyamoto Musashi had several names, including the Dharma name Niten Doraku and the birthname Miyamoto Masana. The Zen monk Thích Nhất Hạnh also has used various Dharma names in the course of his career.