Well, given that "The Realm," is another name for the Scarlet Empire, the common languege there would be Low Realm.  (Saying Rivertongue is the common tongue of the Realm is kind of like saying that Russian is the common tongue of 1970s USA.)  But throughout the River Country--and anywhere someone wants to do buisness with the Guild--River Tongue is a good languege to have.  :)<br/><br/>Canticle and Heartfire both speak River Tongue and Old Realm.  Canticle also speaks Low Realm and High Realm.<br/><br/>I'm pretty sure our Dawn Caste, plaeyd by RedstreakW, speaks both Low Realm and River Tongue.