noun
former name; maiden name
Used for a previous name of a person, place, or thing. For a woman's name before marriage, 旧姓 is more common, but 旧名 is also used.
彼女の旧名は田中花子です。
Her former name is Hanako Tanaka.
この町の旧名は江戸です。
The former name of this town is Edo.