 Landing near Leith, which was immediately captured, Morris accompanied the army to Edinburgh, where on 7 May he blew in the Netherbow Port with a culverin; the next day he bombarded the castle, without effect, for two hours and was compelled to retreat.In the autumn of 1544 Morris, as chief director of the batteries, was at Boulogne in France, where on 3 September he received a wound, which proved fatal.He was buried in St. Peter's Church, Cornhill, London.