The Zeno Brothers

Who were the Zeno brothers? How and why might they have led an expedition to America in 1398, well before Chistopher Columbus? Why were Knights Templar involved? And the young King Erik of Norway?And what role did the Earl of Orkney and Shetland play?Alastair Macleod uses historic sources to frame the background of this controversial expedition undertaken before Orkney and Shetland came under Scottish rule.