Alphonsus, King of Aragon, is a play by Robert Greene written some time around 1590 and first published after his death in 1599. It is only one of four Robert Greene plays left of which he is indisputably the sole author. The play is considered comical only in the negative sense of having a pleasant ending, and is considered to be an emulation of Marlowe's tragedy Tamburlaine, whilst its fame never rivalled Marlowe's tragedy it certainly sought to rival his work. However, on its own, Alphonsus is a proper history dramatised in chronicle form. This fully transcribed edition has been brought to the public with cost and availability in mind, and is not an photocopied version.