Submitted NameRevisions Save Type Surname Usage Filipino, Maranao Other Forms FormsRadiyab, Radjab Edit Status Status [show contributorshide contributors] Added 1/21/2020 by highexpectasians Edited 1/21/2020 by lezginkas Meaning & History From Radiyab, the Maranao name for the seventh month of the Islamic calendar, which is ultimately derived from Arabic رَجَب (Rajab).