His Nom de guerre seems to have been derived from the dance called The Galliard.
"Minstrelsy of the Scottish border (3rd ed) (1 of 3)"
Walter Scott
Thus, every distinguished moss-trooper had, what is here called, a to-name, or Nom de guerre, in addition to his family name.
"Minstrelsy of the Scottish border (3rd ed) (1 of 3)"
Walter Scott
Carl Marlo is the Nom de plume of a German professor of chemistry named Winkelblech, and he gives us in the preface to his second volume a touching account of how he came to apply himself to social questions.
"Contemporary Socialism"
John Rae