Both Warbeck and the Earl of Warwick were dangerous even in captivity, and Henry executed them in 1499 before Ferdinand and Isabella of Spain would allow their daughter Catherine to come to England and marry his son Arthur.
Både Warbeck og jarlen af Warwick var for farlige at have nær, selv i fangeskab, og Henrik henrettede dem derfor i 1499 inden Ferdinand og Isabella af Spanien lod deres datter Catherine komme til England for at gifte sig med hans søn Arthur.