David (born November 7, 630), who had the regnal name Tiberius, was one of three co-emperors of Byzantium in a period beginning in September or October 641 and ending probably in January 642. David was the son of Emperor Heraclius and his wife and niece Empress Martina. He was born after the emperor and empress had visited Jerusalem and his given name reflects a deliberate attempt to link the imperial family with the Biblical David. The David Plates may likewise have been created for the young prince or to commemorate his birth. David was given the senior court title Caesar at the age of 7 in a ceremony where he received the kamelaukion cap previously worn by his older brother Heraklonas.