Corlan Dashiva is an Asha'man at the Black Tower who is chosen to accompany Rand after the Battle of Dumai's Wells,
and is in fact the name taken by Osan'gar, the reincarnated Aginor.
I could never work out how to pronounce the name Dashiva. The detailed glossaries at the end of each volume stopped just around the time he appeared, so we never got a pronunciation guide for his name. Is it Dah-SHEE-vah, Dah-SHY-vah, DAH-shih-vah, or something else?