John, King of England, [150], [159]

John of Gaunt, [179], [180]

Julian the Apostate, [57]

Jutes, [3], [17], [38]

Jutland, [3]

Knights-errant, [155]

Knights of the sword, [141], [212]

Kossovo, battle at, [220]

Leonardo da Vinci, [230]

Lewes, battle at, [183]