High Quality Content by WIKIPEDIA articles! Roger "Deke" Leonard (born 18 December 1944, Llanelli, South Wales) is a rock musician, "serving a life sentence in the music business." Best known as a member of the progressive rock band Man, which he joined and left several times, and for fronting his own rock and roll band Iceberg, which he formed and disbanded several times, he is also an author, raconteur and television panellist.