Polite counter for people, often used in formal contexts like reservations or announcements.
ご予約は一名様でよろしいでしょうか。
Is the reservation for one person?
Used to introduce an alternative name, pen name, or nickname; common in formal or written contexts.
彼は一名を「ジョン」という。
He also goes by the name 'John'.
Compound of 一 (one) and 名 (name/person). The 'one person' sense derives from counting people with the counter 名, while the 'alias' sense comes from the literal meaning 'one name'.