Roger (or Rodger) is primarily a common first name of Catalan, English and French usage, ("Rogier", "Rutger" in Dutch) from the Germanic elements hrod (fame) and ger (spear) meaning "famous with the spear." The Latin form of the name is Rogerius, as used by a few medieval figures.
The name Roger was transmitted to England by the Normans after the Norman Conquest along with other names such as William, Robert, Richard, and Hugh. It replaced its Anglo-Saxon cognate, Hroðgar. The variant Rosser comes from a Welsh derivation of the Old Norse Rhosier meaning “renown for his sword” (or spear) and first introduced to Wales via the Norman Invasion.